The epoll_ctl system call in fs/eventpoll.c in the Linux kernel before 3.2.24 does not properly handle ELOOP errors in EPOLL_CTL_ADD operations, which allows local users to cause a denial of service (file-descriptor consumption and system crash) via a crafted application that attempts to create a circular epoll dependency. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-1083.

The remote Oracle Linux 5 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2012-10611 advisory.

  - The epoll_ctl system call in fs/eventpoll.c in the Linux kernel before 3.2.24 does not properly handle     ELOOP errors in EPOLL_CTL_ADD operations, which allows local users to cause a denial of service (file-     descriptor consumption and system crash) via a crafted application that attempts to create a circular     epoll dependency. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-1083.
    (CVE-2012-3375)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

This plugin has been deprecated as it is a duplicate of oraclelinux_ELSA-2012-1061-1.nasl (plugin ID 68573).

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2012:1150 advisory.

    The kernel-rt packages contain the Linux kernel, the core of any Linux     operating system.

    This update fixes the following security issues:

    * A memory leak flaw was found in the way the Linux kernel's memory     subsystem handled resource clean up in the mmap() failure path when the     MAP_HUGETLB flag was set. A local, unprivileged user could use this flaw to     cause a denial of service. (CVE-2012-2390, Moderate)

    * A flaw was found in the way the Linux kernel's Event Poll (epoll)     subsystem handled resource clean up when an ELOOP error code was returned.
    A local, unprivileged user could use this flaw to cause a denial of     service. (CVE-2012-3375, Moderate)

    This update also fixes the following bugs:

    * The MRG 2.1 realtime kernel lacked support for automatic memory     reservation for the kdump kernel, as present in Red Hat Enterprise Linux     kernels. Using the parameter crashkernel=auto on the kernel boot command     line led to kdump being disabled because no memory was correctly reserved.
    Support for crashkernel=auto has been implemented in the 3.0 realtime     kernel and now when the crashkernel=auto parameter is specified, machines     with more than 4GB of RAM have the amount of memory required by the kdump     kernel calculated and reserved. (BZ#820427)

    * The current bnx2x driver in the MRG 2.1 realtime kernel had faulty     support for the network adapter PCI ID 14e4:168e and did not work     correctly. The bnx2x driver was updated to include support for this network     adapter. (BZ#839037)

    Users should upgrade to these updated packages, which upgrade the kernel-rt     kernel to version kernel-rt-3.0.36-rt57, and correct these issues. The     system must be rebooted for this update to take effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux kernel was updated to fix various bugs and security issues :

CVE-2013-0871: Race condition in the ptrace functionality in the Linux kernel allowed local users to gain privileges via a PTRACE_SETREGS ptrace system call in a crafted application, as demonstrated by ptrace_death.

CVE-2013-0160: Avoid a side channel attack on /dev/ptmx (keyboard input timing).

CVE-2012-5374: Fixed a local denial of service in the BTRFS hashing code.

CVE-2013-0309: arch/x86/include/asm/pgtable.h in the Linux kernel, when transparent huge pages are used, does not properly support PROT_NONE memory regions, which allows local users to cause a denial of service (system crash) via a crafted application.

CVE-2013-0268: The msr_open function in arch/x86/kernel/msr.c in the Linux kernel allowed local users to bypass intended capability restrictions by executing a crafted application as root, as demonstrated by msr32.c.

CVE-2012-0957: The override_release function in kernel/sys.c in the Linux kernel allowed local users to obtain sensitive information from kernel stack memory via a uname system call in conjunction with a UNAME26 personality.

CVE-2013-0216: The Xen netback functionality in the Linux kernel allowed guest OS users to cause a denial of service (loop) by triggering ring pointer corruption.

CVE-2013-0231: The pciback_enable_msi function in the PCI backend driver (drivers/xen/pciback/conf_space_capability_msi.c) in Xen for the Linux kernel allowed guest OS users with PCI device access to cause a denial of service via a large number of kernel log messages.
NOTE: some of these details are obtained from third-party information.

CVE-2012-4530: The load_script function in fs/binfmt_script.c in the Linux kernel did not properly handle recursion, which allowed local users to obtain sensitive information from kernel stack memory via a crafted application.

CVE-2012-4508: Race condition in fs/ext4/extents.c in the Linux kernel allowed local users to obtain sensitive information from a deleted file by reading an extent that was not properly marked as uninitialized.

CVE-2012-3412: The sfc (aka Solarflare Solarstorm) driver in the Linux kernel allowed remote attackers to cause a denial of service (DMA descriptor consumption and network-controller outage) via crafted TCP packets that trigger a small MSS value.

CVE-2012-2745: The copy_creds function in kernel/cred.c in the Linux kernel provided an invalid replacement session keyring to a child process, which allowed local users to cause a denial of service (panic) via a crafted application that uses the fork system call.

CVE-2012-3375: The epoll_ctl system call in fs/eventpoll.c in the Linux kernel did not properly handle ELOOP errors in EPOLL_CTL_ADD operations, which allowed local users to cause a denial of service (file-descriptor consumption and system crash) via a crafted application that attempts to create a circular epoll dependency.

CVE-2012-3400: Heap-based buffer overflow in the udf_load_logicalvol function in fs/udf/super.c in the Linux kernel allowed remote attackers to cause a denial of service (system crash) or possibly have unspecified other impact via a crafted UDF filesystem.

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2012-2026 advisory.

  - The epoll implementation in the Linux kernel 2.6.37.2 and earlier does not properly traverse a tree of     epoll file descriptors, which allows local users to cause a denial of service (CPU consumption) via a     crafted application that makes epoll_create and epoll_ctl system calls. (CVE-2011-1083)

  - The copy_creds function in kernel/cred.c in the Linux kernel before 3.3.2 provides an invalid replacement     session keyring to a child process, which allows local users to cause a denial of service (panic) via a     crafted application that uses the fork system call. (CVE-2012-2745)

  - The epoll_ctl system call in fs/eventpoll.c in the Linux kernel before 3.2.24 does not properly handle     ELOOP errors in EPOLL_CTL_ADD operations, which allows local users to cause a denial of service (file-     descriptor consumption and system crash) via a crafted application that attempts to create a circular     epoll dependency. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-1083.
    (CVE-2012-3375)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Description of changes:

* CVE-2012-2745: Denial-of-service in kernel key management.

A potential double-free of the replacement session keyring on fork() could result in a denial-of-service by a local, unprivileged user.


* CVE-2011-1083: Algorithmic denial of service in epoll.

A flaw was found in the way the Linux kernel's Event Poll (epoll) subsystem handled large, nested epoll structures. A local, unprivileged user could use this flaw to cause a denial of service.



[2.6.39-200.29.2.el5uek]
- epoll: clear the tfile_check_list on -ELOOP (Joe Jin) {CVE-2012-3375}
- Don't limit non-nested epoll paths (Jason Baron)
- epoll: kabi fixups for epoll limit wakeup paths (Joe Jin) {CVE-2011-1083}
- epoll: limit paths (Jason Baron)  {CVE-2011-1083}
- cred: copy_process() should clear child->replacement_session_keyring (Oleg    Nesterov)  {CVE-2012-2745}

The remote Oracle Linux 5 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2012-1061 advisory.

    - [xen] x86_64: check address on trap handlers or guest callbacks (Paolo Bonzini) [813430 813431]     {CVE-2012-0217}
    - [xen] x86_64: Do not execute sysret with a non-canonical return address (Paolo Bonzini) [813430 813431]     {CVE-2012-0217}
    - [xen] x86: prevent hv boot on AMD CPUs with Erratum 121 (Laszlo Ersek) [824969 824970] {CVE-2012-2934}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

From Red Hat Security Advisory 2012:1061 :

Updated kernel packages that fix one security issue and multiple bugs are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security fix :

* The fix for CVE-2011-1083 (RHSA-2012:0150) introduced a flaw in the way the Linux kernel's Event Poll (epoll) subsystem handled resource clean up when an ELOOP error code was returned. A local, unprivileged user could use this flaw to cause a denial of service. (CVE-2012-3375, Moderate)

Bug fixes :

* The qla2xxx driver handled interrupts for QLogic Fibre Channel adapters incorrectly due to a bug in a test condition for MSI-X support. This update corrects the bug and qla2xxx now handles interrupts as expected. (BZ#816373)

* A process scheduler did not handle RPC priority wait queues correctly. Consequently, the process scheduler failed to wake up all scheduled tasks as expected after RPC timeout, which caused the system to become unresponsive and could significantly decrease system performance. This update modifies the process scheduler to handle RPC priority wait queues as expected. All scheduled tasks are now properly woken up after RPC timeout and the system behaves as expected.
(BZ#817571)

* The kernel version 2.6.18-308.4.1.el5 contained several bugs which led to an overrun of the NFS server page array. Consequently, any attempt to connect an NFS client running on Red Hat Enterprise Linux 5.8 to the NFS server running on the system with this kernel caused the NFS server to terminate unexpectedly and the kernel to panic. This update corrects the bugs causing NFS page array overruns and the kernel no longer crashes in this scenario. (BZ#820358)

* An insufficiently designed calculation in the CPU accelerator in the previous kernel caused an arithmetic overflow in the sched_clock() function when system uptime exceeded 208.5 days. This overflow led to a kernel panic on the systems using the Time Stamp Counter (TSC) or Virtual Machine Interface (VMI) clock source. This update corrects the calculation so that this arithmetic overflow and kernel panic can no longer occur under these circumstances.

Note: This advisory does not include a fix for this bug for the 32-bit architecture. (BZ#824654)

* Under memory pressure, memory pages that are still a part of a checkpointing transaction can be invalidated. However, when the pages were invalidated, the journal head was re-filed onto the transactions' 'forget' list, which caused the current running transaction's block to be modified. As a result, block accounting was not properly performed on that modified block because it appeared to have already been modified due to the journal head being re-filed. This could trigger an assertion failure in the 'journal_commit_transaction()' function on the system. The 'b_modified' flag is now cleared before the journal head is filed onto any transaction; assertion failures no longer occur. (BZ#827205)

* When running more than 30 instances of the cclengine utility concurrently on IBM System z with IBM Communications Controller for Linux, the system could become unresponsive. This was caused by a missing wake_up() function call in the qeth_release_buffer() function in the QETH network device driver. This update adds the missing wake_up() function call and the system now responds as expected in this scenario. (BZ#829059)

* Recent changes removing support for the Flow Director from the ixgbe driver introduced bugs that caused the RSS (Receive Side Scaling) functionality to stop working correctly on Intel 82599EB 10 Gigabit Ethernet network devices. This update corrects the return code in the ixgbe_cache_ring_fdir function and setting of the registers that control the RSS redirection table. Also, obsolete code related to Flow Director support has been removed. The RSS functionality now works as expected on these devices. (BZ#832169)

Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.

The SUSE Linux Enterprise 11 SP2 kernel was updated to 3.0.38, fixing various bugs and security issues.

The following security issues have been fixed :

  - Several buffer overread and overwrite errors in the UDF     logical volume descriptor code have been fixed that     might have have allowed local attackers able to mount     UDF volumes to crash the kernel or potentially gain     privileges. (CVE-2012-3400)

  - A denial of service (crash) in epoll has been fixed. The     three NTP leapsecond issues were fixed and are contained     in Linux Kernel stable 3.0.38. (CVE-2012-3375)

The Libceph/ceph/rbd framework was imported for later Cloud storage usage.

Various bug and security fixes were integrated from the Linux stable kernel 3.0.34-3.0.38 upgrade and are not explicitly listed here.

The following other non-security issues have been fixed :

S/390

  - dasd: Use correct queue for aborting requests.

  - dasd: Abort requests from correct queue.

  - [S390] Do not clobber personality flags on exec.
    (bnc#770034)

  - dasd: Kick tasklet instead of processing the     request_queue directly.

  - s390/kernel: CPU idle vs CPU hotplug     (bnc#772407,LTC#83468).

  - lgr: Make lgr_page static (bnc#772407,LTC#83520).

  - s390/kernel: incorrect task size after fork of a 31 bit     process (bnc#772407,LTC#83674).

  - dasd: Abort all requests on the request_queue, too.
    (bnc#768084)

  - DASD: Add timeout attribute. (bnc#771361)

  - dasd: Fixup typo in debugging message.

  - patches.suse/dasd-fail-all-requests-after-timeout.patch:
    Fixup handling of failfast requests. (bnc#768084)

  - s390: allow zcrypt to /dev/random feeding to be resumed.
    (bnc#718910)

  - s390/hypfs: Missing files and directories     (bnc#769407,LTC#82838).

  - dasd: Fail all requests after timeout. (bnc#768084)

  - s390/kernel: Add z/VM LGR detection     (bnc#767281,LTC#RAS1203). BTRFS fixes (3.3-3.5+)

  - Btrfs: avoid sleeping in verify_parent_transid while     atomic

  - Btrfs: fix btrfs_release_extent_buffer_page with the     right usage of num_extent_pages

  - Btrfs: do not check delalloc when updating disk_i_size

  - Btrfs: look into the extent during find_all_leafs

  - Btrfs: do not set for_cow parameter for tree block     functions

  - Btrfs: fix defrag regression

  - Btrfs: fix missing inherited flag in rename

  - Btrfs: do not resize a seeding device

  - Btrfs: cast devid to unsigned long long for printk %llu

  - Btrfs: add a missing spin_lock

  - Btrfs: restore restriper state on all mounts

  - Btrfs: resume balance on rw (re)mounts properly

  - Btrfs: fix tree log remove space corner case

  - Btrfs: hold a ref on the inode during writepages

  - Btrfs: do not return EINVAL instead of ENOMEM from     open_ctree()

  - Btrfs: do not ignore errors from     btrfs_cleanup_fs_roots() when mounting

  - Btrfs: fix error handling in __add_reloc_root()

  - Btrfs: return error of btrfs_update_inode() to caller

  - Btrfs: fix typo in cow_file_range_async and     async_cow_submit

  - Btrfs: fix btrfs_is_free_space_inode to recognize btree     inode

  - Btrfs: kill root from btrfs_is_free_space_inode

  - Btrfs: zero unused bytes in inode item

  - disable     patches.suse/btrfs-8052-fix-wrong-information-of-the-dir     ectory-in-the-.patch. (bnc#757059)

XEN

  - Refresh Xen patches (bnc#772831, add spinlock.nopoll     option).

  - Update Xen patches to 3.0.35.

  - xen/thp: avoid atomic64_read in pmd_read_atomic for     32bit PAE. (bnc#762991)

  - Update Xen config files     (CONFIG_XEN_SPINLOCK_ACQUIRE_NESTING=1). MD

  - md: Do not truncate size at 4TB for RAID0 and Linear

  - md/bitmap: Do not write bitmap while earlier writes     might be in-fligh. (bnc#771398)

  - md: Fixup blktrace information.

  - md: Abort pending request for RAID10. (bnc#773251)

  - md: add raid10 tracepoints. (bnc#768084)

  - md: wakeup thread upon rdev_dec_pending(). (bnc#771398)

  - md: Correctly register error code on failure.

  - md: Do not take mddev lock when reading rdev attributes     from sysfs. (bnc#772420)

  - md: unblock SET_DISK_FAULTY ioctl (bnc#768084). Hyper-V

  - net/hyperv: Use wait_event on outstanding sends during     device removal.

  - Tools: hv: verify origin of netlink connector message.

  - hyperv: Add support for setting MAC from within guests.

  - Drivers: hv: Change the hex constant to a decimal     constant.

  - hyperv: Add error handling to rndis_filter_device_add().

  - hyperv: Add a check for ring_size value.

  - Drivers: hv: Cleanup the guest ID computation.

  - hv: add RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER. Scheduler

  - sched: Make sure to not re-read variables after     validation. (bnc#769685)

  - sched: Only queue remote wakeups when crossing cache     boundaries part2. (bnc#754690)

  - sched: really revert latency defaults to SP1 values.
    (bnc#754690)

  - sched: optimize latency defaults. (bnc#754690)

  - sched: Save some hrtick_start_fair cycles. (bnc#754690)

  - sched: use rt.nr_cpus_allowed to recover     select_task_rq() cycles. (bnc#754690)

  - sched: Set skip_clock_update in yield_task_fair().
    (bnc#754690)

  - sched: Do not call task_group() too many times in     set_task_rq(). (bnc#754690)

  - sched: ratelimit nohz. (bnc#754690)

  - sched: Wrap scheduler p->cpus_allowed access.
    (bnc#754690)

  - sched: Avoid SMT siblings in select_idle_sibling() if     possible. (bnc#754690)

  - sched: Clean up domain traversal in     select_idle_sibling(). (bnc#754690)

  - sched: Remove rcu_read_lock/unlock() from     select_idle_sibling(). (bnc#754690)

  - sched: Fix the sched group node allocation for     SD_OVERLAP domains. (bnc#754690)

  - sched: add SD_SHARE_PKG_RESOURCES domain flags proc     handler. (bnc#754690)

  - sched: fix select_idle_sibling() induced bouncing     (bnc#754690). Other fixes

  - rt2800: add chipset revision RT5390R support.
    (bnc#772566)

  - reiserfs: fix deadlocks with quotas. (bnc#774285)

  - VFS: avoid prepend_path warning about d_obtain_alias     aliases. (bnc#773006)

  - ntp: avoid printk under xtime_lock. (bnc#767684)

  - kvm: kvmclock: apply kvmclock offset to guest wall clock     time. (bnc#766445)

  - bonding: allow all slave speeds. (bnc#771428)

  - mm: hugetlbfs: Close race during teardown of hugetlbfs     shared page tables.

  - mm: hugetlbfs: Correctly detect if page tables have just     been shared.

  -     patches.fixes/mm-hugetlb-decrement-mapcount-under-page_t     able_lock.patch: Delete. (Fix bad PMD message displayed     while using hugetlbfs (bnc#762366)).

  - ALSA: hda - Evaluate gpio_led hints at the right moment.
    (bnc#773878)

  - proc: stats: Use arch_idle_time for idle and iowait     times if available. (bnc#772893)

  - tcp: perform DMA to userspace only if there is a task     waiting for it. (bnc#773606)

  - rt2x00: fix rt3290 resuming failed. (bnc#771778)

  - patches.suse/SUSE-bootsplash: Refresh. (Fix wrong     vfree() (bnc#773406))

  - vhost: do not forget to schedule(). (bnc#767983)

  - powerpc, kabi: reintroduce __cputime_msec_factor.
    (bnc#771242)

  - powerpc: Fix wrong divisor in usecs_to_cputime.
    (bnc#771242)

  - mm: use cpu_chill() in spin_trylock_page() and cancel on     immediately RT. (bnc#768470)

  - be2net: Fix EEH error reset before a flash dump     completes. (bnc#755546)

  - st: Fix adding of tape link from device directory.
    (bnc#771102)

  - idr: Fix locking of minor idr during failure-case     removal and add freeing of minor idr during device     removal.

  - add firmware update for Atheros 0cf3:311f. (bnc#761775)

  - Unset CONFIG_WATCHDOG_NOWAYOUT to prevent reboot of     openais on service stop. (bnc#756585)

  - Update config files: Enable CONFIG_RT2800PCI_RT3290.

  - ida: simplified functions for id allocation.
    (bnc#749291)

  - ida: make ida_simple_get/put() IRQ safe. (bnc#749291)

  - virtio-blk: use ida to allocate disk index. (bnc#749291)

  - USB: option: Add USB ID for Novatel Ovation MC551.
    (bnc#770269)

  - USB: option: add id for Cellient MEN-200. (bnc#770269)

  - Fix the position of SUSE logo on text screen.
    (bnc#770238)

  - enable Atheros 0cf3:311e for firmware upload.
    (bnc#766733)

  - scsi_dh_alua: Improve error handling. (bnc#715635)

  - scsi: remove an unhandled error code message.
    (bnc#715635)

  - Add to support Ralink ROMA wifi chip. (bnc#758703)

  - x86_64, UV: Update NMI handler for UV1000/2000 systems.
    (bnc#746509, bnc#744655)

  - kdb: Fix merge error in original kdb x86 patch.
    (bnc#746509)

  - udf: Avoid run away loop when partition table length is     corrupted. (bnc#769784)

  - udf: Fortify loading of sparing table. (bnc#769784)

  - udf: Use ret instead of abusing i in     udf_load_logicalvol(). (bnc#769784)

  - intel_ips: blacklist HP ProBook laptops. (bnc#720946)

  - drm: edid: Do not add inferred modes with higher     resolution. (bnc#753172)

  - init: mm: Reschedule when initialising large numbers of     memory sections. (bnc#755620).

  - x86/apic: Use x2apic physical mode based on FADT     setting. (bnc#768052)

  - acpiphp: add dmi info to acpiphp module. (bnc#754391)

  - ntp: fix leap second hrtimer deadlock. (bnc#768632)

  - ntp: avoid printk under xtime_lock. (bnc#767684)

  - nohz: Fix update_ts_time_stat idle accounting.
    (bnc#767469, bnc#705551)

  - nohz: Make idle/iowait counter update conditional.
    (bnc#767469, bnc#705551)

  - bug: introduce BUILD_BUG_ON_INVALID() macro

  - bug: completely remove code generated by disabled. (VM     Performance).

  - mm: call cond_resched in putback_lru_pages. (bnc#763968)

  - Update x84-64 Xen config file     (CONFIG_ACPI_PROCESSOR_AGGREGATOR=m).

  - ia64 is odd man out, CONFIG_SCHED_HRTICK is not set, fix     build failure due to missing hrtick_enabled() in that     case.

  - drm: Add poll blacklist for Dell Latitude E5420.
    (bnc#756276)

  - supported.conf: mark libceph and rbd as unsupported.

  - drm/i915: Fix eDP blank screen after S3 resume on HP     desktops. (bnc#752352)

  - mm: hugetlb: Decrement mapcount under page table lock     (Consistent mapcount decrementing under lock     (bnc#762366)).

  - mm: hugetlb: flush_tlb_range() needs page_table_lock     when mmap_sem is not held (Consistent locking for TLB     flush of hugetlb pages (bnc#762366)).

  - mm/hugetlb.c: undo change to page mapcount in fault     handler (Handle potential leaks in hugetlbfs error paths     (bnc#762366)).

  - drm/i915: Not all systems expose a firmware or platform     mechanism for changing the backlight intensity on i915,     so add native driver support. (bnc#752352)

  - i915: do not setup intel_backlight twice. (bnc#752352)

  - drm/i915: enable vdd when switching off the eDP panel.
    (bnc#752352)

  - Add missing definition blk_queue_dead().

  - Backport patches from mainline to fix SCSI crash under     heavy load (bnc#738284) :

  - block: add blk_queue_dead(). (bnc#738284)

  - block: add missing blk_queue_dead() checks. (bnc#738284)

  - block: Fix race on request.end_io invocations.
    (bnc#738284)

  - fc class: fix scanning when devs are offline.
    (bnc#738284)

  - scsi: Fix device removal NULL pointer dereference.
    (bnc#738284)

  - fix DID_TARGET_FAILURE and DID_NEXUS_FAILURE host byte     settings. (bnc#738284)

  - scsi: Stop accepting SCSI requests before removing a     device. (bnc#738284)

  - Delete preliminary patch.

  - Provide obsoleted KMPs (bnc#753353), fix ath3k     obsoletes.

  - mm: filemap: Optimise file-backed page faulting by     emulating an adaptive sleeping spinlock. (bnc#762414)

  - Add yet another product ID for HP cert machines.
    (bnc#764339)

  - x86: check for valid irq_cfg pointer in     smp_irq_move_cleanup_interrupt. (bnc#763754)

  - backing-dev: use synchronize_rcu_expedited instead of     synchronize_rcu. (bnc#766027)

  - sysfs: count subdirectories. (bnc#766027)

  - kABI fix for sysfs-count-subdirectories. (bnc#766027)

  - block: Introduce blk_set_stacking_limits function.
    (bnc#763026)

The SUSE Linux Enterprise 11 SP1 kernel have been updated to fix various bugs and security issues.

The following security issues have been fixed :

  - Several buffer overread and overwrite errors in the UDF     logical volume descriptor code were fixed that might     have allowed local attackers able to mount UDF volumes     to crash the kernel or potentially gain privileges.
    (CVE-2012-3400)

  - A local denial of service in the last epoll fix was     fixed. (CVE-2012-3375)

  - A integer overflow in i915_gem_do_execbuffer() was fixed     that might be used by local attackers to crash the     kernel or potentially execute code. (CVE-2012-2384)

  - A integer overflow in i915_gem_execbuffer2() was fixed     that might be used by local attackers to crash the     kernel or potentially execute code. (CVE-2012-2383)

  - Memiory leaks in the hugetlbfs map reservation code were     fixed that could be used by local attackers to exhaust     machine memory. (CVE-2012-2390)

  - The filesystem capability handling was not fully     correct, allowing local users to bypass fscaps related     restrictions to disable e.g. address space     randomization. (CVE-2012-2123)

  - Validation of data_len before allocating fragments of     skbs was fixed that might have allowed a heap overflow.
    (CVE-2012-2136)

  - Fixed potential buffer overflows in the hfsplus     filesystem, which might be exploited by local attackers     able to mount such filesystems. (CVE-2012-2319)

Several leapsecond related bug fixes have been created :

  - hrtimer: provide clock_was_set_delayed(). (bnc#768632)

  - time: Fix leapsecond triggered hrtimer/futex load spike     issue. (bnc#768632)

  - ntp: fix leap second hrtimer deadlock. (bnc#768632)

  - ntp: avoid printk under xtime_lock (bnc#767684). The     following non-security issues have been fixed :

  - tcp: drop SYN+FIN messages to avoid memory leaks.
    (bnc#765102)

  - be2net: Fix EEH error reset before a flash dump     completes. (bnc#755546)

  - REVERT svcrpc: destroy server sockets all at once.
    (bnc#769210)

  - sched: Make sure to not re-read variables after     validation. (bnc#769685)

  - audit: Do not send uninitialized data for AUDIT_TTY_GET.
    (bnc#755513)

  - dlm: do not depend on sctp. (bnc#729247, bnc#763656)

  - RPC: killing RPC tasks races fixed. (bnc#765548)

  - vlan/core: Fix memory leak/corruption on VLAN GRO_DROP.
    (bnc#758058)

  - CPU hotplug, cpusets, suspend/resume: Do not modify     cpusets during suspend/resume. (bnc#752858)

  - ioat2: kill pending flag. (bnc#765022)

  - Fix massive driver induced spin_lock_bh() contention.

  - ipmi: Fix IPMI errors due to timing problems.
    (bnc#761988)

  - xen: fix VM_FOREIGN users after c/s 878:eba6fe6d8d53.
    (bnc#760974)

  - xen: gntdev: fix multi-page slot allocation.
    (bnc#760974)

  - rpm/kernel-binary.spec.in: Own the right -kdump initrd.
    (bnc#764500)

  - kernel: pfault task state race (bnc#764098,LTC#81724).

  - xfrm: take net hdr len into account for esp payload size     calculation. (bnc#759545)

  - bonding: do not dereference NULL pointer to device of     VLAN 0. (bnc#763830)

  - cifs: fix oops while traversing open file list (try #4).
    (bnc#756050)

  - nfsd: fix BUG at fs/nfsd/nfsfh.h:199 on unlink.
    (bnc#769777)

  - nfs: Ensure we never try to mount an NFS auto-mount dir     (bnc748601).

  - patches.suse/cgroup-disable-memcg-when-low-lowmem.patch:
    fix typo: use if defined(CONFIG_) rather than if CONFIG_

  - patches.suse/pagecache-limit-fix-shmem-deadlock.patch:
    Fixed the GFP_NOWAIT is zero and not suitable for tests     bug. (bnc#755537)

  - sys_poll: fix incorrect type for timeout parameter.
    (bnc#754428)

  - scsi_transport_fc: fix blocked bsg request when fc     object deleted. (bnc#761414, bnc#734300)

  - ehea: fix allmulticast support. (bnc#758013)

  - scsi: Silence unnecessary warnings about ioctl to     partition. (bnc#758104)

  - sched/x86: Fix overflow in cyc2ns_offset. (bnc#630970,     bnc#661605)

  - sched/rt: Do not throttle when PI boosting. (bnc#754085)

  - sched/rt: Keep period timer ticking when rt throttling     is active. (bnc#754085)

  - sched,rt: fix isolated CPUs leaving root_task_group     indefinitely throttled. (bnc#754085)

An error was discovered in the Linux kernel's network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges. (CVE-2012-2136)

Ulrich Obergfell discovered an error in the Linux kernel's memory management subsystem on 32 bit PAE systems with more than 4GB of memory installed. A local unprivileged user could exploit this flaw to crash the system. (CVE-2012-2373)

An error was discovered in the Linux kernel's memory subsystem (hugetlb). An unprivileged local user could exploit this flaw to cause a denial of service (crash the system). (CVE-2012-2390)

A flaw was discovered in the Linux kernel's epoll system call. An unprivileged local user could use this flaw to crash the system.
(CVE-2012-3375)

Some errors where discovered in the Linux kernel's UDF file system, which is used to mount some CD-ROMs and DVDs. An unprivileged local user could use these flaws to crash the system. (CVE-2012-3400)

A flaw was discovered in the madvise feature of the Linux kernel's memory subsystem. An unprivileged local use could exploit the flaw to cause a denial of service (crash the system). (CVE-2012-3511).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An error was discovered in the Linux kernel's network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges. (CVE-2012-2136)

Ulrich Obergfell discovered an error in the Linux kernel's memory management subsystem on 32 bit PAE systems with more than 4GB of memory installed. A local unprivileged user could exploit this flaw to crash the system. (CVE-2012-2373)

A flaw was discovered in the Linux kernel's epoll system call. An unprivileged local user could use this flaw to crash the system.
(CVE-2012-3375)

Some errors where discovered in the Linux kernel's UDF file system, which is used to mount some CD-ROMs and DVDs. An unprivileged local user could use these flaws to crash the system. (CVE-2012-3400)

A flaw was discovered in the Linux kernel's macvtap device driver, which is used in KVM (Kernel-based Virtual Machine) to create a network bridge between host and guest. A privleged user in a guest could exploit this flaw to crash the host, if the vhost_net module is loaded with the experimental_zcopytx option enabled. (CVE-2012-2119)

An error was discovered in the Linux kernel's network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges. (CVE-2012-2136)

A flaw was found in how the Linux kernel's KVM (Kernel-based Virtual Machine) subsystem handled MSI (Message Signaled Interrupts). A local unprivileged user could exploit this flaw to cause a denial of service or potentially elevate privileges. (CVE-2012-2137)

A flaw was found in the Linux kernel's Reliable Datagram Sockets (RDS) protocol implementation. A local, unprivileged user could use this flaw to cause a denial of service. (CVE-2012-2372)

Ulrich Obergfell discovered an error in the Linux kernel's memory management subsystem on 32 bit PAE systems with more than 4GB of memory installed. A local unprivileged user could exploit this flaw to crash the system. (CVE-2012-2373)

Dan Rosenberg discovered flaws in the Linux kernel's NCI (Near Field Communication Controller Interface). A remote attacker could exploit these flaws to crash the system or potentially execute privileged code. (CVE-2012-3364)

A flaw was discovered in the Linux kernel's epoll system call. An unprivileged local user could use this flaw to crash the system.
(CVE-2012-3375)

Some errors where discovered in the Linux kernel's UDF file system, which is used to mount some CD-ROMs and DVDs. An unprivileged local user could use these flaws to crash the system. (CVE-2012-3400)

A flaw was discovered in the madvise feature of the Linux kernel's memory subsystem. An unprivileged local use could exploit the flaw to cause a denial of service (crash the system). (CVE-2012-3511).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

A flaw was discovered in the Linux kernel's macvtap device driver, which is used in KVM (Kernel-based Virtual Machine) to create a network bridge between host and guest. A privleged user in a guest could exploit this flaw to crash the host, if the vhost_net module is loaded with the experimental_zcopytx option enabled. (CVE-2012-2119)

An error was discovered in the Linux kernel's network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges. (CVE-2012-2136)

A flaw was found in how the Linux kernel's KVM (Kernel-based Virtual Machine) subsystem handled MSI (Message Signaled Interrupts). A local unprivileged user could exploit this flaw to cause a denial of service or potentially elevate privileges. (CVE-2012-2137)

A flaw was found in the Linux kernel's Reliable Datagram Sockets (RDS) protocol implementation. A local, unprivileged user could use this flaw to cause a denial of service. (CVE-2012-2372)

Ulrich Obergfell discovered an error in the Linux kernel's memory management subsystem on 32 bit PAE systems with more than 4GB of memory installed. A local unprivileged user could exploit this flaw to crash the system. (CVE-2012-2373)

Dan Rosenberg discovered flaws in the Linux kernel's NCI (Near Field Communication Controller Interface). A remote attacker could exploit these flaws to crash the system or potentially execute privileged code. (CVE-2012-3364)

A flaw was discovered in the Linux kernel's epoll system call. An unprivileged local user could use this flaw to crash the system.
(CVE-2012-3375)

Some errors where discovered in the Linux kernel's UDF file system, which is used to mount some CD-ROMs and DVDs. An unprivileged local user could use these flaws to crash the system. (CVE-2012-3400)

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security fix :

  - The fix for CVE-2011-1083 introduced a flaw in the way     the Linux kernel's Event Poll (epoll) subsystem handled     resource clean up when an ELOOP error code was returned.
    A local, unprivileged user could use this flaw to cause     a denial of service. (CVE-2012-3375, Moderate)

Bug fixes :

  - The qla2xxx driver handled interrupts for QLogic Fibre     Channel adapters incorrectly due to a bug in a test     condition for MSI-X support. This update corrects the     bug and qla2xxx now handles interrupts as expected.

  - A process scheduler did not handle RPC priority wait     queues correctly. Consequently, the process scheduler     failed to wake up all scheduled tasks as expected after     RPC timeout, which caused the system to become     unresponsive and could significantly decrease system     performance. This update modifies the process scheduler     to handle RPC priority wait queues as expected. All     scheduled tasks are now properly woken up after RPC     timeout and the system behaves as expected.

  - The kernel version 2.6.18-308.4.1.el5 contained several     bugs which led to an overrun of the NFS server page     array. Consequently, any attempt to connect an NFS     client running on Scientific Linux 5.8 to the NFS server     running on the system with this kernel caused the NFS     server to terminate unexpectedly and the kernel to     panic. This update corrects the bugs causing NFS page     array overruns and the kernel no longer crashes in this     scenario.

  - An insufficiently designed calculation in the CPU     accelerator in the previous kernel caused an arithmetic     overflow in the sched_clock() function when system     uptime exceeded 208.5 days. This overflow led to a     kernel panic on the systems using the Time Stamp Counter     (TSC) or Virtual Machine Interface (VMI) clock source.
    This update corrects the calculation so that this     arithmetic overflow and kernel panic can no longer occur     under these circumstances.

Note: This advisory does not include a fix for this bug for the 32-bit architecture.

  - Under memory pressure, memory pages that are still a     part of a checkpointing transaction can be invalidated.
    However, when the pages were invalidated, the journal     head was re-filed onto the transactions' 'forget' list,     which caused the current running transaction's block to     be modified. As a result, block accounting was not     properly performed on that modified block because it     appeared to have already been modified due to the     journal head being re-filed. This could trigger an     assertion failure in the 'journal_commit_transaction()'     function on the system. The 'b_modified' flag is now     cleared before the journal head is filed onto any     transaction; assertion failures no longer occur.

  - When running more than 30 instances of the cclengine     utility concurrently on IBM System z with IBM     Communications Controller for Linux, the system could     become unresponsive. This was caused by a missing     wake_up() function call in the qeth_release_buffer()     function in the QETH network device driver. This update     adds the missing wake_up() function call and the system     now responds as expected in this scenario.

  - Recent changes removing support for the Flow Director     from the ixgbe driver introduced bugs that caused the     RSS (Receive Side Scaling) functionality to stop working     correctly on Intel 82599EB 10 Gigabit Ethernet network     devices. This update corrects the return code in the     ixgbe_cache_ring_fdir function and setting of the     registers that control the RSS redirection table. Also,     obsolete code related to Flow Director support has been     removed. The RSS functionality now works as expected on     these devices.

Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.

Updated kernel packages that fix one security issue and multiple bugs are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security fix :

* The fix for CVE-2011-1083 (RHSA-2012:0150) introduced a flaw in the way the Linux kernel's Event Poll (epoll) subsystem handled resource clean up when an ELOOP error code was returned. A local, unprivileged user could use this flaw to cause a denial of service. (CVE-2012-3375, Moderate)

Bug fixes :

* The qla2xxx driver handled interrupts for QLogic Fibre Channel adapters incorrectly due to a bug in a test condition for MSI-X support. This update corrects the bug and qla2xxx now handles interrupts as expected. (BZ#816373)

* A process scheduler did not handle RPC priority wait queues correctly. Consequently, the process scheduler failed to wake up all scheduled tasks as expected after RPC timeout, which caused the system to become unresponsive and could significantly decrease system performance. This update modifies the process scheduler to handle RPC priority wait queues as expected. All scheduled tasks are now properly woken up after RPC timeout and the system behaves as expected.
(BZ#817571)

* The kernel version 2.6.18-308.4.1.el5 contained several bugs which led to an overrun of the NFS server page array. Consequently, any attempt to connect an NFS client running on Red Hat Enterprise Linux 5.8 to the NFS server running on the system with this kernel caused the NFS server to terminate unexpectedly and the kernel to panic. This update corrects the bugs causing NFS page array overruns and the kernel no longer crashes in this scenario. (BZ#820358)

* An insufficiently designed calculation in the CPU accelerator in the previous kernel caused an arithmetic overflow in the sched_clock() function when system uptime exceeded 208.5 days. This overflow led to a kernel panic on the systems using the Time Stamp Counter (TSC) or Virtual Machine Interface (VMI) clock source. This update corrects the calculation so that this arithmetic overflow and kernel panic can no longer occur under these circumstances.

Note: This advisory does not include a fix for this bug for the 32-bit architecture. (BZ#824654)

* Under memory pressure, memory pages that are still a part of a checkpointing transaction can be invalidated. However, when the pages were invalidated, the journal head was re-filed onto the transactions' 'forget' list, which caused the current running transaction's block to be modified. As a result, block accounting was not properly performed on that modified block because it appeared to have already been modified due to the journal head being re-filed. This could trigger an assertion failure in the 'journal_commit_transaction()' function on the system. The 'b_modified' flag is now cleared before the journal head is filed onto any transaction; assertion failures no longer occur. (BZ#827205)

* When running more than 30 instances of the cclengine utility concurrently on IBM System z with IBM Communications Controller for Linux, the system could become unresponsive. This was caused by a missing wake_up() function call in the qeth_release_buffer() function in the QETH network device driver. This update adds the missing wake_up() function call and the system now responds as expected in this scenario. (BZ#829059)

* Recent changes removing support for the Flow Director from the ixgbe driver introduced bugs that caused the RSS (Receive Side Scaling) functionality to stop working correctly on Intel 82599EB 10 Gigabit Ethernet network devices. This update corrects the return code in the ixgbe_cache_ring_fdir function and setting of the registers that control the RSS redirection table. Also, obsolete code related to Flow Director support has been removed. The RSS functionality now works as expected on these devices. (BZ#832169)

Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.

The remote CentOS system is missing a security update which has been documented in Red Hat advisory RHSA-2012-1061.

ID	Name	Product	Family	Severity
181092	Oracle Linux 5 : ELSA-2012-1061-1: / kernel (ELSA-2012-10611) (deprecated)	Nessus	Oracle Linux Local Security Checks	medium
83611	SUSE SLES11 Security Update : kernel (SUSE-SU-2014:0287-1)	Nessus	SuSE Local Security Checks	high
76645	RHEL 6 : kernel-rt (RHSA-2012:1150)	Nessus	Red Hat Local Security Checks	medium
74914	openSUSE Security Update : kernel (openSUSE-SU-2013:0396-1)	Nessus	SuSE Local Security Checks	high
68679	Oracle Linux 5 / 6 : Unbreakable Enterprise kernel Security (ELSA-2012-2026)	Nessus	Oracle Linux Local Security Checks	medium
68678	Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2012-2025)	Nessus	Oracle Linux Local Security Checks	medium
68574	Oracle Linux 5 : kernel (ELSA-2012-1061)	Nessus	Oracle Linux Local Security Checks	medium
68573	Oracle Linux 5 : kernel (ELSA-2012-1061-1)	Nessus	Oracle Linux Local Security Checks	medium
64178	SuSE 11.2 Security Update : Linux kernel (SAT Patch Numbers 6641 / 6643 / 6648)	Nessus	SuSE Local Security Checks	high
64177	SuSE 11.1 Security Update : Linux kernel (SAT Patch Numbers 6547 / 6548 / 6550)	Nessus	SuSE Local Security Checks	high
61549	Ubuntu 10.04 LTS : linux-lts-backport-oneiric vulnerabilities (USN-1539-1)	Nessus	Ubuntu Local Security Checks	high
61511	Ubuntu 11.10 : linux vulnerabilities (USN-1533-1)	Nessus	Ubuntu Local Security Checks	high
61510	USN-1532-1 : linux-ti-omap4 vulnerabilities	Nessus	Ubuntu Local Security Checks	high
61507	Ubuntu 12.04 LTS : linux vulnerabilities (USN-1529-1)	Nessus	Ubuntu Local Security Checks	high
61506	USN-1514-1 : linux-ti-omap4 vulnerabilities	Nessus	Ubuntu Local Security Checks	high
61360	Scientific Linux Security Update : kernel on SL5.x i386/x86_64 (20120710)	Nessus	Scientific Linux Local Security Checks	medium
59946	RHEL 5 : kernel (RHSA-2012:1061)	Nessus	Red Hat Local Security Checks	medium
59939	CentOS 5 : kernel (CESA-2012:1061)	Nessus	CentOS Local Security Checks	medium
801521	CentOS RHSA-2012-1061 Security Check	Log Correlation Engine	Generic	high

Detections

Analytics

CVE-2012-3375

medium

Tenable Plugins

medium

high

medium

high

medium

medium

medium

medium

high

high

high

high

high

high

high

medium

medium

medium

high