Linux kernel 2.6.17 and earlier, when running on IA64 or SPARC platforms, allows local users to cause a denial of service (crash) via a malformed ELF file that triggers memory maps that cross region boundaries.

From Red Hat Security Advisory 2007:1049 :

Updated kernel packages that fix several security issues and a bug in the Red Hat Enterprise Linux 3 kernel are now available.

This update has been rated as having important security impact by the Red Hat Security Response Team.

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

A flaw was found in the handling of process death signals. This allowed a local user to send arbitrary signals to the suid-process executed by that user. A successful exploitation of this flaw depends on the structure of the suid-program and its signal handling.
(CVE-2007-3848, Important)

A flaw was found in the IPv4 forwarding base. This allowed a local user to cause a denial of service. (CVE-2007-2172, Important)

A flaw was found where a corrupted executable file could cause cross-region memory mappings on Itanium systems. This allowed a local user to cause a denial of service. (CVE-2006-4538, Moderate)

A flaw was found in the stack expansion when using the hugetlb kernel on PowerPC systems. This allowed a local user to cause a denial of service. (CVE-2007-3739, Moderate)

A flaw was found in the aacraid SCSI driver. This allowed a local user to make ioctl calls to the driver that should be restricted to privileged users. (CVE-2007-4308, Moderate)

As well, these updated packages fix the following bug :

* a bug in the TCP header prediction code may have caused 'TCP:
Treason uncloaked!' messages to be logged. In certain situations this may have lead to TCP connections hanging or aborting.

Red Hat Enterprise Linux 3 users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues.

From Red Hat Security Advisory 2007:0014 :

Updated kernel packages that fix several security issues in the Red Hat Enterprise Linux 4 kernel are now available.

This security advisory has been rated as having important security impact by the Red Hat Security Response Team.

The Linux kernel handles the basic functions of the operating system.

These new kernel packages contain fixes for the security issues described below :

* a flaw in the get_fdb_entries function of the network bridging support that allowed a local user to cause a denial of service (crash) or allow a potential privilege escalation (CVE-2006-5751, Important)

* an information leak in the _block_prepare_write function that allowed a local user to read kernel memory (CVE-2006-4813, Important)

* an information leak in the copy_from_user() implementation on s390 and s390x platforms that allowed a local user to read kernel memory (CVE-2006-5174, Important)

* a flaw in the handling of /proc/net/ip6_flowlabel that allowed a local user to cause a denial of service (infinite loop) (CVE-2006-5619, Important)

* a flaw in the AIO handling that allowed a local user to cause a denial of service (panic) (CVE-2006-5754, Important)

* a race condition in the mincore system core that allowed a local user to cause a denial of service (system hang) (CVE-2006-4814, Moderate)

* a flaw in the ELF handling on ia64 and sparc architectures which triggered a cross-region memory mapping and allowed a local user to cause a denial of service (CVE-2006-4538, Moderate)

* a flaw in the dev_queue_xmit function of the network subsystem that allowed a local user to cause a denial of service (data corruption) (CVE-2006-6535, Moderate)

* a flaw in the handling of CAPI messages over Bluetooth that allowed a remote system to cause a denial of service or potential code execution. This flaw is only exploitable if a privileged user establishes a connection to a malicious remote device (CVE-2006-6106, Moderate)

* a flaw in the listxattr system call that allowed a local user to cause a denial of service (data corruption) or potential privilege escalation. To successfully exploit this flaw the existence of a bad inode is required first (CVE-2006-5753, Moderate)

* a flaw in the __find_get_block_slow function that allowed a local privileged user to cause a denial of service (CVE-2006-5757, Low)

* various flaws in the supported filesystems that allowed a local privileged user to cause a denial of service (CVE-2006-5823, CVE-2006-6053, CVE-2006-6054, CVE-2006-6056, Low)

In addition to the security issues described above, fixes for the following bugs were included :

* initialization error of the tg3 driver with some BCM5703x network card

* a memory leak in the audit subsystem

* x86_64 nmi watchdog timeout is too short

* ext2/3 directory reads fail intermittently

Red Hat would like to thank Dmitriy Monakhov and Kostantin Khorenko for reporting issues fixed in this erratum.

All Red Hat Enterprise Linux 4 users are advised to upgrade their kernels to the packages associated with their machine architecture and configurations as listed in this erratum.

A flaw was found in the handling of process death signals. This allowed a local user to send arbitrary signals to the suid-process executed by that user. A successful exploitation of this flaw depends on the structure of the suid-program and its signal handling.
(CVE-2007-3848, Important)

A flaw was found in the IPv4 forwarding base. This allowed a local user to cause a denial of service. (CVE-2007-2172, Important)

A flaw was found where a corrupted executable file could cause cross-region memory mappings on Itanium systems. This allowed a local user to cause a denial of service. (CVE-2006-4538, Moderate)

A flaw was found in the stack expansion when using the hugetlb kernel on PowerPC systems. This allowed a local user to cause a denial of service. (CVE-2007-3739, Moderate)

A flaw was found in the aacraid SCSI driver. This allowed a local user to make ioctl calls to the driver that should be restricted to privileged users. (CVE-2007-4308, Moderate)

As well, these updated packages fix the following bug :

  - a bug in the TCP header prediction code may have caused     'TCP: Treason uncloaked!' messages to be logged. In     certain situations this may have lead to TCP connections     hanging or aborting.

This kernel update fixes the following security problems :

  - A bug within the UDF filesystem that caused machine     hangs when truncating files on the filesystem was fixed.
    [#186226]. (CVE-2006-4145)

  - A potential crash when receiving IPX packets was fixed.
    This problem is thought not to be exploitable. [#197809]

  - A problem in DVB packet handling could be used to crash     the machine when receiving DVB net packages is active.
    [#201429]. (CVE-2006-4623)

  - A struct file leak was fixed in the perfmon(2) system     call on the Itanium architecture. [#202269].
    (CVE-2006-3741)

  - A malformed ELF image can be used on the Itanium     architecture to trigger a kernel crash (denial of     service) when a local attacker can supply it to be     started. [#203822]. (CVE-2006-4538)

  - A problem in the ATM protocol handling clip_mkip     function could be used by remote attackers to     potentially crash the machine. [#205383].
    (CVE-2006-4997)

CVE-2006-5757/

  - A problem in the grow_buffers function could be used to     crash or hang the machine using a corrupted filesystem.
    This affects filesystem types ISO9660 and NTFS.
    [#205384]. (CVE-2006-6060)

  - On the i386 architecture the ELFAGS content was not     correctly saved, which could be used by local attackers     to crash other programs using the AC and NT flag or to     escalate privileges by waiting for iopl privileges to be     leaked. [#209386]. (CVE-2006-5173)

  - On the S/390 architecture copy_from_user() could be used     by local attackers to read kernel memory. [#209880].
    (CVE-2006-5174)

  - A problem in IPv6 flowlabel handling can be used by     local attackers to hang the machine. [#216590].
    (CVE-2006-5619)

  - On the PowerPC architecture a syscall has been wired     without the proper futex implementation that can be     exploited by a local attacker to hang the machine.
    [#217295]. (CVE-2006-5648)

  - On the PowerPC architecture the proper futex     implementation was missing a fix for alignment check     which could be used by a local attacker to crash the     machine. [#217295]. (CVE-2006-5649)

  - A problem in cramfs could be used to crash the machine     during mounting a crafted cramfs image. This requires an     attacker to supply such a crafted image and have a user     mount it. [#218237]. (CVE-2006-5823)

  - A problem in the ext3 filesystem could be used by     attackers able to supply a crafted ext3 image to cause a     denial of service or further data corruption if a user     mounts this image. [#220288]. (CVE-2006-6053)

  - Missing return code checking in the HFS could be used to     crash machine when a user complicit attacker is able to     supply a specially crafted HFS image. [#221230].
    (CVE-2006-6056)

  - Multiple unspecified vulnerabilities in netfilter for     IPv6 code allow remote attackers to bypass intended     restrictions via fragmentation attack vectors, aka (1)     'ip6_tables protocol bypass bug' and (2) 'ip6_tables     extension header bypass bug'. [#221313]. (CVE-2006-4572)

  - An integer overflow in the networking bridge ioctl     starting with Kernel 2.6.7 could be used by local     attackers to overflow kernel memory buffers and     potentially escalate privileges [#222656].
    (CVE-2006-5751)

and the following non security bugs :

  - patches.fixes/dm-bio_list_merge-fix.diff: device-mapper     snapshot: bio_list fix [#117435]

  - patches.fixes/statd-refcount-fix: Fix refcounting     problems in host management in lockd. [#148009]

  - patches.fixes/i8042-reentry: Prevents i8042_interrupt()     from being reentered. [#167187]

  - patches.suse/bonding-workqueue: Replace system timer     with work queue in monitor functions. Remove rtnl_lock     calls in monitor functions added in original version.
    [#174843] [#205196]

  - patches.arch/i386-profile-pc: i386: Account spinlocks to     the caller during profiling for !FP kernels [#176770]

  - patches.arch/add-user-mode: i386/x86-64: Add user_mode     checks to profile_pc for oprofile [#176770]

  - patches.drivers/aic7xxx-max-sectors-adjust: Adjust     .max_sectors to 8192 for aic7xxx [#177059]

  - patches.xen/xen-x86-dcr-fallback: Add fallback when     XENMEM_exchange fails to replace contiguous region     [#181869]

  - patches.suse/lkcd-support-large-minor-number: LKCD     should support minor numbers > 256 [#185125]

  - patches.fixes/scsi-scan-limit-luns-seqscan-16k: Limit     sequential scan to 16k LUNs [#185164]

  - patches.drivers/powernow-ext-mask: Handle extended     powernow vid mask properly [#185654]

  - patches.fixes/xfs-unlink-recovery-fix: [XFS] unlink     recovery fix. ([#185796]

  - patches.suse/lkcd-dont-lose-one-page: Fix incorrect     dumps on machines with memory holes [#186169]

  - patches.fixes/ieee80211-orinoco_ap_workaround.diff:
    ieee80211: workaround for broken Orinoco access points     [#186879]

  - patches.fixes/sched-group-exclusive: Fix scheduler crash     with exclusive cpusets [#188921]

  - patches.fixes/bdev-imapping-race.diff: Fix race between     sync_single_inode() and iput() [#188950]

  - patches.fixes/scsi-scan-blist-update: Update blacklist     entries for EMC Symmetrix and HP EVA [#191648]

  - patches.arch/ia64-mce-output: Save/restore     oops_in_progress around printing machine checks     [#191901]

  - patches.fixes/scsi-add-device-oops-during-eh: Fix Oops     in scsi_add_device during EH [#195050]

  - Included a set of fixes for [#195940]

  - patches.fixes/dm-fix-alloc_dev-error_path.patch: call     free_minor in alloc_dev error path.
    patches.fixes/dm-snapshot-fix-origin_write-pe-submission     .patch: fix origin_write pending_exception submission. -

patches.fixes/dm-snapshot-replace-sibling-list.patch: replace sibling list.

  - patches.fixes/dm-snapshot-fix-pending-pe-ref.patch: fix     references to pending pe.

  - patches.fixes/dm-snapshot-fix-invalidation.patch: fix     invalidation. -

patches.fixes/dm-kcopyd-error-accumulation-fix.patch: kcopyd should accumulate errors.
patches.fixes/dm-snapshot-fix-metadata-error-handling.patch: fix read_metadata error handling.
patches.fixes/dm-snapshot-fix-metadata-writing-when-suspending.patch:
fix metadata writing when suspending.

  - patches.fixes/nat-t-pskb-pull.patch: Fix NAT-T VPN with     certain ethernet chips, in particular recent e1000     chips. [#196747]

  - patches.drivers/e1000-update: Update so that we no     longer break the 'Disable Packet Split for PCI express     adapters' driver option.

  - patches.fixes/e1000-no-packet-split: Discard, no longer     needed.

  - patches.arch/acpi_T60_ultrabay.patch: Add T60 ACPI dock     station path to ibm_acpi module [#196884]

  - patches.fixes/acpi_battery_hotplug_fix.patch: Workaround     ACPI misdesign to recon dock station when booting     undocked.

  - patches.fixes/acpi_ibm_dock_fix_not_present.patch:
    Workaround ACPI misdesign to recon dock station when     booting undocked [#196884]

  - patches.arch/x86_64-monotonic-clock: Fix monotonic clock     on x86-64 [#197548]

  - patches.fixes/nfs-truncate-race: Fix a race when     truncating over NFS and writing via mmap [#198023]

  - patches.drivers/libata-no-spindown-on-shutdown: Don't     spindown SCSI disks when rebooting [#198687]

  - patches.drivers/qla2xxx-reset-fix: allow reset for     qla2xxx via sg_reset [#200325]

  - kabi/s390/symvers-default: Update kABI symbols [#202134]

  - patches.suse/bond_alb_deadlock_fix: bonding: fix     deadlock on high loads in bond_alb_monitor(). [#202512]

  - patches.arch/i386-fix-tsc-selection: Fix TSC timer     selection on i386 [#203713]

  - patches.drivers/aic94xx-remove-flash-manfid-reliance:
    Remove reliance on the FLASH MANFID [#203768]

  - patches.fixes/xfs-kern-205110-xfs_dio_locking: Fix ABBA     deadlock between i_mutex and iolock [#205110]

  - patches.suse/bonding-workqueue: Replace system timer     with work queue in monitor functions. Remove rtnl_lock     calls in monitor functions added in original version.
    [#174843] [#205196]

  - add     patches.fixes/fix-incorrect-hugepage-interleaving.patch     fix NUMA interleaving for huge pages [#205268]

  - patches.suse/bondalb-hashtbl.patch: fix hang in bonding     ALB driver. [#206629]     patches.drivers/usb-add-raritan-kvm-usb-dongle-to-the-hi     d_quirk_noget-blacklist.patch: USB: add Raritan KVM USB     Dongle to the HID_QUIRK_NOGET blacklist [#206932]

  - patches.arch/ia64-mca_asm-set_kernel_registers: [IA64]     set ar.fpsr on MCA/INIT kernel entry. [#206967]

  - patches.fixes/md-bitmap-ffz: Use ffz instead of     find_first_set to convert multiplier to shift. [#207679]

  - patches.fixes/md-bitmap-compat-ioctl: Allow     SET_BITMAP_FILE to work on 64bit kernel with 32bit     userspace. [#207688]

  - patches.drivers/mpt-rport-stall: Fix MPT oops during     aborting commands [#207768]

  - patches.drivers/libata-jmicron-update: Fix handling of     JMicron controller [#207939]

  - patches.arch/i386-mmconfig-flush:
    arch/i386/pci/mmconfig.c tlb flush fix [#208414]

  - patches.fixes/scsi-fix-req-page-count: scsi_lib.c:
    properly count the number of pages in scsi_req_map_sg()     [#208782]

  - patches.fixes/fix-processor-placement.diff: sched: Fix     longstanding load balancing bug in the scheduler     [#209460].

  - patches.arch/x86_64-fpu-corruption: Fix FPU corruption     [#209903]

  - patches.drivers/qla1280-bus-reset-handling: performance     slowdown after bus reset on qla12160 HBA [#213717]

  - patches.drivers/qla1280-scb-timeout: qla1280 times out     on long operations such as tape rewind [#214695]

  - patches.fixes/slab-per-cpu-data: Make slab     initialization use per cpu data of correction CPU     [#216316]

  - patches.fixes/ocfs2-network-send-lock.diff: ocfs2:
    introduce sc->sc_send_lock to protect outbound network     messages [#216912]

  - marked module megaraid_sas as supported

  - marked module jsm as supported [#218969]

  - patches.suse/ocfs2-13-fix-quorum-work.diff: ocfs2:
    outstanding scheduled work can oops when quorum is shut     down [#220694]

  - patches.xen/xen-x86_64-agp: add missing header [#222174]     [#224170]

  - patches.fixes/md-rebuild-fix: md: Fix bug where a     rebuild of spares, when interrupted by a rebuild,     doesn't always get properly completed once the system is     back up, leading to filesystem corruption. [#224960].

  - patches.fixes/scsi-sdev-initialisation-block-race: SCSI     midlayer race: scan vs block/unblock deadlocks sdev     [#225770]

Updated kernel packages that fix several security issues in the Red Hat Enterprise Linux 4 kernel are now available.

This security advisory has been rated as having important security impact by the Red Hat Security Response Team.

The Linux kernel handles the basic functions of the operating system.

These new kernel packages contain fixes for the security issues described below :

* a flaw in the get_fdb_entries function of the network bridging support that allowed a local user to cause a denial of service (crash) or allow a potential privilege escalation (CVE-2006-5751, Important)

* an information leak in the _block_prepare_write function that allowed a local user to read kernel memory (CVE-2006-4813, Important)

* an information leak in the copy_from_user() implementation on s390 and s390x platforms that allowed a local user to read kernel memory (CVE-2006-5174, Important)

* a flaw in the handling of /proc/net/ip6_flowlabel that allowed a local user to cause a denial of service (infinite loop) (CVE-2006-5619, Important)

* a flaw in the AIO handling that allowed a local user to cause a denial of service (panic) (CVE-2006-5754, Important)

* a race condition in the mincore system core that allowed a local user to cause a denial of service (system hang) (CVE-2006-4814, Moderate)

* a flaw in the ELF handling on ia64 and sparc architectures which triggered a cross-region memory mapping and allowed a local user to cause a denial of service (CVE-2006-4538, Moderate)

* a flaw in the dev_queue_xmit function of the network subsystem that allowed a local user to cause a denial of service (data corruption) (CVE-2006-6535, Moderate)

* a flaw in the handling of CAPI messages over Bluetooth that allowed a remote system to cause a denial of service or potential code execution. This flaw is only exploitable if a privileged user establishes a connection to a malicious remote device (CVE-2006-6106, Moderate)

* a flaw in the listxattr system call that allowed a local user to cause a denial of service (data corruption) or potential privilege escalation. To successfully exploit this flaw the existence of a bad inode is required first (CVE-2006-5753, Moderate)

* a flaw in the __find_get_block_slow function that allowed a local privileged user to cause a denial of service (CVE-2006-5757, Low)

* various flaws in the supported filesystems that allowed a local privileged user to cause a denial of service (CVE-2006-5823, CVE-2006-6053, CVE-2006-6054, CVE-2006-6056, Low)

In addition to the security issues described above, fixes for the following bugs were included :

* initialization error of the tg3 driver with some BCM5703x network card

* a memory leak in the audit subsystem

* x86_64 nmi watchdog timeout is too short

* ext2/3 directory reads fail intermittently

Red Hat would like to thank Dmitriy Monakhov and Kostantin Khorenko for reporting issues fixed in this erratum.

All Red Hat Enterprise Linux 4 users are advised to upgrade their kernels to the packages associated with their machine architecture and configurations as listed in this erratum.

Updated kernel packages that fix several security issues and a bug in the Red Hat Enterprise Linux 3 kernel are now available.

This update has been rated as having important security impact by the Red Hat Security Response Team.

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

A flaw was found in the handling of process death signals. This allowed a local user to send arbitrary signals to the suid-process executed by that user. A successful exploitation of this flaw depends on the structure of the suid-program and its signal handling.
(CVE-2007-3848, Important)

A flaw was found in the IPv4 forwarding base. This allowed a local user to cause a denial of service. (CVE-2007-2172, Important)

A flaw was found where a corrupted executable file could cause cross-region memory mappings on Itanium systems. This allowed a local user to cause a denial of service. (CVE-2006-4538, Moderate)

A flaw was found in the stack expansion when using the hugetlb kernel on PowerPC systems. This allowed a local user to cause a denial of service. (CVE-2007-3739, Moderate)

A flaw was found in the aacraid SCSI driver. This allowed a local user to make ioctl calls to the driver that should be restricted to privileged users. (CVE-2007-4308, Moderate)

As well, these updated packages fix the following bug :

* a bug in the TCP header prediction code may have caused 'TCP:
Treason uncloaked!' messages to be logged. In certain situations this may have lead to TCP connections hanging or aborting.

Red Hat Enterprise Linux 3 users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues.

Sridhar Samudrala discovered a local Denial of Service vulnerability in the handling of SCTP sockets. By opening such a socket with a special SO_LINGER value, a local attacker could exploit this to crash the kernel. (CVE-2006-4535)

Kirill Korotaev discovered that the ELF loader on the ia64 and sparc platforms did not sufficiently verify the memory layout. By attempting to execute a specially crafted executable, a local user could exploit this to crash the kernel. (CVE-2006-4538).

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.

This kernel update fixes the following security problems :

  - CVE-2006-4145: A bug within the UDF filesystem that     caused machine hangs when truncating files on the     filesystem was fixed. [#186226]

    - A potential crash when receiving IPX packets was       fixed. This problem is thought not to be exploitable.
      [#197809]

  - CVE-2006-4623: A problem in DVB packet handling could be     used to crash the machine when receiving DVB net     packages is active. [#201429]

  - CVE-2006-3741: A struct file leak was fixed in the     perfmon(2) system call on the Itanium architecture.
    [#202269]

  - CVE-2006-4538: A malformed ELF image can be used on the     Itanium architecture to trigger a kernel crash (denial     of service) when a local attacker can supply it to be     started. [#203822]

  - CVE-2006-4997: A problem in the ATM protocol handling     clip_mkip function could be used by remote attackers to     potentially crash the machine. [#205383]

CVE-2006-5757/

  - CVE-2006-6060: A problem in the grow_buffers function     could be used to crash or hang the machine using a     corrupted filesystem. This affects filesystem types     ISO9660 and NTFS. [#205384]

  - CVE-2006-5173: On the i386 architecture the ELFAGS     content was not correctly saved, which could be used by     local attackers to crash other programs using the AC and     NT flag or to escalate privileges by waiting for iopl     privileges to be leaked. [#209386]

  - CVE-2006-5174: On the S/390 architecture     copy_from_user() could be used by local attackers to     read kernel memory. [#209880]

  - CVE-2006-5619: A problem in IPv6 flowlabel handling can     be used by local attackers to hang the machine.
    [#216590]

  - CVE-2006-5648: On the PowerPC architecture a syscall has     been wired without the proper futex implementation that     can be exploited by a local attacker to hang the     machine. [#217295]

  - CVE-2006-5649: On the PowerPC architecture the proper     futex implementation was missing a fix for alignment     check which could be used by a local attacker to crash     the machine. [#217295]

  - CVE-2006-5823: A problem in cramfs could be used to     crash the machine during mounting a crafted cramfs     image. This requires an attacker to supply such a     crafted image and have a user mount it. [#218237]

  - CVE-2006-6053: A problem in the ext3 filesystem could be     used by attackers able to supply a crafted ext3 image to     cause a denial of service or further data corruption if     a user mounts this image. [#220288]

  - CVE-2006-6056: Missing return code checking in the HFS     could be used to crash machine when a user complicit     attacker is able to supply a specially crafted HFS     image. [#221230]

  - CVE-2006-4572: Multiple unspecified vulnerabilities in     netfilter for IPv6 code allow remote attackers to bypass     intended restrictions via fragmentation attack vectors,     aka (1) 'ip6_tables protocol bypass bug' and (2)     'ip6_tables extension header bypass bug'. [#221313]

  - CVE-2006-5751: An integer overflow in the networking     bridge ioctl starting with Kernel 2.6.7 could be used by     local attackers to overflow kernel memory buffers and     potentially escalate privileges [#222656]

Additionaly this kernel catches up to the SLE 10 state of the kernel, with massive additional fixes.

Some vulnerabilities were discovered and corrected in the Linux 2.6 kernel :

The 2.6.17 kernel and earlier, when running on IA64 and SPARC platforms would allow a local user to cause a DoS (crash) via a malformed ELF file (CVE-2006-4538).

The mincore function in the Linux kernel did not properly lock access to user space, which has unspecified impact and attack vectors, possibly related to a deadlock (CVE-2006-4814).

An unspecified vulnerability in the listxattr system call, when a 'bad inode' is present, could allow a local user to cause a DoS (data corruption) and possibly gain privileges via unknown vectors (CVE-2006-5753).

The zlib_inflate function allows local users to cause a crash via a malformed filesystem that uses zlib compression that triggers memory corruption (CVE-2006-5823).

The ext3fs_dirhash function could allow local users to cause a DoS (crash) via an ext3 stream with malformed data structures (CVE-2006-6053).

When SELinux hooks are enabled, the kernel could allow a local user to cause a DoS (crash) via a malformed file stream that triggers a NULL pointer derefernece (CVE-2006-6056).

The key serial number collision avoidance code in the key_alloc_serial function in kernels 2.6.9 up to 2.6.20 allows local users to cause a crash via vectors thatr trigger a null dereference (CVE-2007-0006).

The Linux kernel version 2.6.13 to 2.6.20.1 allowed a remote attacker to cause a DoS (oops) via a crafted NFSACL2 ACCESS request that triggered a free of an incorrect pointer (CVE-2007-0772).

A local user could read unreadable binaries by using the interpreter (PT_INTERP) functionality and triggering a core dump; a variant of CVE-2004-1073 (CVE-2007-0958).

The provided packages are patched to fix these vulnerabilities. All users are encouraged to upgrade to these updated kernels immediately and reboot to effect the fixes.

In addition to these security fixes, other fixes have been included such as :

  - add PCI IDs for cciss driver (HP ML370G5 / DL360G5)

    - fixed a mssive SCSI reset on megasas (Dell PE2960)

    - increased port-reset completion delay for HP       controllers (HP ML350)

    - NUMA rnage fixes for x86_64

    - various netfilter fixes

To update your kernel, please follow the directions located at :

http://www.mandriva.com/en/security/kernelupdate

Several local and remote vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or the execution of arbitrary code. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2005-4093     Olof Johansson reported a local DoS (Denial of Service)     vulnerability on the PPC970 platform. Unprivileged users     can hang the system by executing the 'attn' instruction,     which was not being disabled at boot.

  - CVE-2006-4538     Kirill Korotaev reported a local DoS (Denial of Service)     vulnerability on the ia64 and sparc architectures. A     user could cause the system to crash by executing a     malformed ELF binary due to insufficient verification of     the memory layout.

  - CVE-2006-4997     ADLab Venustech Info Ltd reported a potential remote DoS     (Denial of Service) vulnerability in the IP over ATM     subsystem. A remote system could cause the system to     crash by sending specially crafted packets that would     trigger an attempt to free an already-freed pointer     resulting in a system crash.

  - CVE-2006-5174     Martin Schwidefsky reported a potential leak of     sensitive information on s390 systems. The     copy_from_user function did not clear the remaining     bytes of the kernel buffer after receiving a fault on     the userspace address, resulting in a leak of     uninitialized kernel memory. A local user could exploit     this by appending to a file from a bad address.

  - CVE-2006-5649     Fabio Massimo Di Nitto reported a potential remote DoS     (Denial of Service) vulnerability on powerpc systems.
    The alignment exception only checked the exception table     for -EFAULT, not for other errors. This can be exploited     by a local user to cause a system crash (panic).

  - CVE-2006-5871     Bill Allombert reported that various mount options are     ignored by smbfs when UNIX extensions are enabled. This     includes the uid, gid and mode options. Client systems     would silently use the server-provided settings instead     of honoring these options, changing the security model.
    This update includes a fix from Haroldo Gamal that     forces the kernel to honor these mount options. Note     that, since the current versions of smbmount always pass     values for these options to the kernel, it is not     currently possible to activate unix extensions by     omitting mount options. However, this behavior is     currently consistent with the current behavior of the     next Debian release, 'etch'.

Several local and remote vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or the execution of arbitrary code. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2006-3741     Stephane Eranian discovered a local DoS (Denial of     Service) vulnerability on the ia64 architecture. A local     user could exhaust the available file descriptors by     exploiting a counting error in the permonctl() system     call.

  - CVE-2006-4538     Kirill Korotaev reported a local DoS (Denial of Service)     vulnerability on the ia64 and sparc architectures. A     user could cause the system to crash by executing a     malformed ELF binary due to insufficient verification of     the memory layout.

  - CVE-2006-4813     Dmitriy Monakhov reported a potential memory leak in the
    __block_prepare_write function. __block_prepare_write     does not properly sanitize kernel buffers during error     recovery, which could be exploited by local users to     gain access to sensitive kernel memory.

  - CVE-2006-4997     ADLab Venustech Info Ltd reported a potential remote DoS     (Denial of Service) vulnerability in the IP over ATM     subsystem. A remote system could cause the system to     crash by sending specially crafted packets that would     trigger an attempt to free an already-freed pointer     resulting in a system crash.

  - CVE-2006-5174     Martin Schwidefsky reported a potential leak of     sensitive information on s390 systems. The     copy_from_user function did not clear the remaining     bytes of the kernel buffer after receiving a fault on     the userspace address, resulting in a leak of     uninitialized kernel memory. A local user could exploit     this by appending to a file from a bad address.

  - CVE-2006-5619     James Morris reported a potential local DoS (Denial of     Service) vulnerability that could be used to hang or     oops a system. The seqfile handling for     /proc/net/ip6_flowlabel has a flaw that can be exploited     to cause an infinite loop by reading this file after     creating a flowlabel.

  - CVE-2006-5649     Fabio Massimo Di Nitto reported a potential remote DoS     (Denial of Service) vulnerability on powerpc systems.
    The alignment exception only checked the exception table     for -EFAULT, not for other errors. This can be exploited     by a local user to cause a system crash (panic).

  - CVE-2006-5751     Eugene Teo reported a vulnerability in the     get_fdb_entries function that could potentially be     exploited to allow arbitrary code execution with     escalated privileges.

  - CVE-2006-5871     Bill Allombert reported that various mount options are     ignored by smbfs when UNIX extensions are enabled. This     includes the uid, gid and mode options. Client systems     would silently use the server-provided settings instead     of honoring these options, changing the security model.
    This update includes a fix from Haroldo Gamal that     forces the kernel to honor these mount options. Note     that, since the current versions of smbmount always pass     values for these options to the kernel, it is not     currently possible to activate unix extensions by     omitting mount options. However, this behavior is     currently consistent with the current behavior of the     next Debian release, 'etch'.

The remote CentOS system is missing a security update which has been documented in Red Hat advisory RHSA-2007-1049.

The remote CentOS system is missing a security update which has been documented in Red Hat advisory RHSA-2007-0014.

ID	Name	Product	Family	Severity
67609	Oracle Linux 3 : kernel (ELSA-2007-1049)	Nessus	Oracle Linux Local Security Checks	medium
67438	Oracle Linux 4 : kernel (ELSA-2007-0014)	Nessus	Oracle Linux Local Security Checks	high
60321	Scientific Linux Security Update : kernel on SL3.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	medium
59162	SuSE 10 Security Update : Linux kernel (ZYPP Patch Number 2393)	Nessus	SuSE Local Security Checks	high
36838	CentOS 4 : kernel (CESA-2007:0014)	Nessus	CentOS Local Security Checks	high
29490	SuSE 10 Security Update : Linux kernel (ZYPP Patch Number 2399)	Nessus	SuSE Local Security Checks	high
29203	RHEL 3 : kernel (RHSA-2007:1049)	Nessus	Red Hat Local Security Checks	medium
29190	CentOS 3 : kernel (CESA-2007:1049)	Nessus	CentOS Local Security Checks	medium
27927	Ubuntu 5.04 / 5.10 / 6.06 LTS : linux-source-2.6.10/-2.6.12/-2.6.15 vulnerabilities (USN-347-1)	Nessus	Ubuntu Local Security Checks	medium
27291	openSUSE 10 Security Update : kernel (kernel-2397)	Nessus	SuSE Local Security Checks	high
24810	Mandrake Linux Security Advisory : kernel (MDKSA-2007:060)	Nessus	Mandriva Local Security Checks	high
24315	RHEL 4 : kernel (RHSA-2007:0014)	Nessus	Red Hat Local Security Checks	high
23911	Debian DSA-1237-1 : kernel-source-2.4.27 - several vulnerabilities	Nessus	Debian Local Security Checks	high
23846	Debian DSA-1233-1 : kernel-source-2.6.8 - several vulnerabilities	Nessus	Debian Local Security Checks	high
801441	CentOS RHSA-2007-1049 Security Check	Log Correlation Engine	Generic	high
801424	CentOS RHSA-2007-0014 Security Check	Log Correlation Engine	Generic	high

Detections

Analytics

CVE-2006-4538

medium

Tenable Plugins

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