Multiple buffer overflows in CIFS VFS in Linux kernel 2.6.23 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via long SMB responses that trigger the overflows in the SendReceive function.

From Red Hat Security Advisory 2008:0167 :

Updated kernel packages that fix various security issues and several bugs are now available for Red Hat Enterprise Linux 4.

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

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

A buffer overflow flaw was found in the CIFS virtual file system. A remote authenticated user could issue a request that could lead to a denial of service. (CVE-2007-5904, Moderate)

As well, these updated packages fix the following bugs :

* a bug was found in the Linux kernel audit subsystem. When the audit daemon was setup to log the execve system call with a large number of arguments, the kernel could run out out memory while attempting to create audit log messages. This could cause a kernel panic. In these updated packages, large audit messages are split into acceptable sizes, which resolves this issue.

* on certain Intel chipsets, it was not possible to load the acpiphp module using the 'modprobe acpiphp' command. Because the acpiphp module did not recurse across PCI bridges, hardware detection for PCI hot plug slots failed. In these updated packages, hardware detection works correctly.

* on IBM System z architectures that run the IBM z/VM hypervisor, the IBM eServer zSeries HiperSockets network interface (layer 3) allowed ARP packets to be sent and received, even when the 'NOARP' flag was set. These ARP packets caused problems for virtual machines.

* it was possible for the iounmap function to sleep while holding a lock. This may have caused a deadlock for drivers and other code that uses the iounmap function. In these updated packages, the lock is dropped before the sleep code is called, which resolves this issue.

Red Hat Enterprise Linux 4 users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues.

The remote Oracle Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2008-0089 advisory.

    [2.6.18-53.1.6.0.1.el5]
     - [NET] Add entropy support to e1000 and bnx2 (John Sobecki) [ORA 6045759]
     - [NET] Fix msi issue with kexec/kdump (Michael Chan) [ORA 6219364]
     - [MM] Fix alloc_pages_node() static `nid\' race made kernel crash (Joe      Jin) [ORA 6187457]
     - [splice] Fix bad unlock_page() in error case  (Jens Axboe) [ORA 6263574]
     - [dio] fix error-path crashes (Linux Torvalds) [ORA 6242289]
     - [MM] Fix leak in hugepages, regression for shared pagetables patch      (Adam Litke) [ORABUG 6732368]

     [2.6.18-53.1.6.el5]
     - [fs] corruption by unprivileged user in directories (Vitaly Mayatskikh      ) [428796] {CVE-2008-0001}

     [2.6.18-53.1.5.el5]
     - [ia64] ptrace: access to user register backing (Roland McGrath ) [259801]
     - [fs] cifs: buffer overflow due to corrupt response (Jeff Layton ) [372991]
     - [net] s2io: correct VLAN frame reception (Andy Gospodarek ) [426289]
     - [net] s2io: allow VLAN creation on interfaces (Andy Gospodarek ) [426289]
     - [misc] tux: get rid of O_ATOMICLOOKUP (Michal Schmidt ) [426494]
     - [x86_64] fix race conditions in setup_APIC_timer (Geoff Gustafson )      [424181]
     - [fs] core dump file ownership (Don Howard ) [396991]
     - [nfs] let rpciod finish sillyrename then umount (Steve Dickson ) [414041]
     - [nfs] fix a race in silly rename (Steve Dickson ) [414041]
     - [nfs] clean up the silly rename code (Steve Dickson ) [414041]
     - [nfs] infrastructure changes for silly renames (Steve Dickson ) [414041]
     - [nfs] introduce nfs_removeargs and nfs_removeres (Steve Dickson ) [414041]
     - [ia64] remove stack hard limit (Aron Griffis ) [412091]
     - [fs] sysfs: fix race condition around sd->s_dentry (Eric Sandeen )      [245777] {CVE-2007-3104}
     - [fs] sysfs: fix condition check in sysfs_drop_dentry() (Eric Sandeen )      [245777] {CVE-2007-3104}
     - [fs] sysfs: store inode nrs in s_ino (Eric Sandeen ) [245777]      {CVE-2007-3104}
     - [xen] ia64: vulnerability of copy_to_user in PAL emu (Jarod Wilson )      [425938]

Tenable has extracted the preceding description block directly from the Oracle 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.

These updated kernel packages fix the following security issue :

A buffer overflow flaw was found in the CIFS virtual file system. A remote authenticated user could issue a request that could lead to a denial of service. (CVE-2007-5904, Moderate)

As well, these updated packages fix the following bugs :

  - a bug was found in the Linux kernel audit subsystem.
    When the audit daemon was setup to log the execve system     call with a large number of arguments, the kernel could     run out out memory while attempting to create audit log     messages. This could cause a kernel panic. In these     updated packages, large audit messages are split into     acceptable sizes, which resolves this issue.

  - on certain Intel chipsets, it was not possible to load     the acpiphp module using the 'modprobe acpiphp' command.
    Because the acpiphp module did not recurse across PCI     bridges, hardware detection for PCI hot plug slots     failed. In these updated packages, hardware detection     works correctly.

  - on IBM System z architectures that run the IBM z/VM     hypervisor, the IBM eServer zSeries HiperSockets network     interface (layer 3) allowed ARP packets to be sent and     received, even when the 'NOARP' flag was set. These ARP     packets caused problems for virtual machines.

  - it was possible for the iounmap function to sleep while     holding a lock. This may have caused a deadlock for     drivers and other code that uses the iounmap function.
    In these updated packages, the lock is dropped before     the sleep code is called, which resolves this issue.

These new kernel packages fix the following security issues :

A flaw was found in the virtual filesystem (VFS). An unprivileged local user could truncate directories to which they had write permission; this could render the contents of the directory inaccessible. (CVE-2008-0001, Important)

A flaw was found in the Xen PAL emulation on Intel 64 platforms. A guest Hardware-assisted virtual machine (HVM) could read the arbitrary physical memory of the host system, which could make information available to unauthorized users. (CVE-2007-6416, Important)

A flaw was found in the way core dump files were created. If a local user can get a root-owned process to dump a core file into a directory, which the user has write access to, they could gain read access to that core file, potentially containing sensitive information. (CVE-2007-6206, Moderate)

A buffer overflow flaw was found in the CIFS virtual file system. A remote,authenticated user could issue a request that could lead to a denial of service. (CVE-2007-5904, Moderate)

A flaw was found in the 'sysfs_readdir' function. A local user could create a race condition which would cause a denial of service (kernel oops). (CVE-2007-3104, Moderate)

As well, these updated packages fix the following bugs :

  - running the 'strace -f' command caused strace to hang,     without displaying information about child processes.

  - unmounting an unresponsive, interruptable NFS mount, for     example, one mounted with the 'intr' option, may have     caused a system crash.

  - a bug in the s2io.ko driver prevented VLAN devices from     being added. Attempting to add a device to a VLAN, for     example, running the 'vconfig add [device-name]     [vlan-id]' command caused vconfig to fail.

  - tux used an incorrect open flag bit. This caused     problems when building packages in a chroot environment,     such as mock, which is used by the koji build system.

This kernel update fixes the following security problems :

  - The sysfs_readdir function in the Linux kernel 2.6     allows local users to cause a denial of service (kernel     OOPS) by dereferencing a NULL pointer to an inode in a     dentry. (CVE-2007-3104)

  - A 2 byte buffer underflow in the ieee80211 stack was     fixed, which might be used by attackers in the local     WLAN reach to crash the machine. (CVE-2007-4997)

  - The CIFS filesystem, when Unix extension support is     enabled, did not honor the umask of a process, which     allowed local users to gain privileges. (CVE-2007-3740)

  - It was possible for local user to become root by     exploiting a bug in the IA32 system call emulation. This     problem affects the x86_64 platform only, on all     distributions. (CVE-2007-4573)

    This problem was fixed for regular kernels, but had not     been fixed for the XEN kernels. This update fixes the     problem also for the XEN kernels.

  - The (1) aac_cfg_open and (2) aac_compat_ioctl functions     in the SCSI layer ioctl path in aacraid did not check     permissions for ioctls, which might have allowed local     users to cause a denial of service or gain privileges.
    (CVE-2007-4308)

  - The Linux kernel checked the wrong global variable for     the CIFS sec mount option, which might allow remote     attackers to spoof CIFS network traffic that the client     configured for security signatures, as demonstrated by     lack of signing despite sec=ntlmv2i in a SetupAndX     request. (CVE-2007-3843)

  - Multiple buffer overflows in CIFS VFS in the Linux     kernel allowed remote attackers to cause a denial of     service (crash) and possibly execute arbitrary code via     long SMB responses that trigger the overflows in the     SendReceive function. (CVE-2007-5904)

    This requires the attacker to mis-present / replace a     CIFS server the client machine is connected to.

  - Buffer overflow in the isdn_net_setcfg function in     isdn_net.c in the Linux kernel allowed local users to     have an unknown impact via a crafted argument to the     isdn_ioctl function. (CVE-2007-6063)

and the following non security bugs :

-

patches.drivers/pci-delete-ACPI-hook-from-pci_set_power_stat e.patch:
Delete ACPI hook from pci_set_power_state() [#162320] Still execute the code on Lenovo ThinkPads (or USB ports do not work anymore after suspend [#329232]

  - patches.drivers/alsa-post-sp1-hda-probe-blacklist:
    [ALSA] hda-intel - Add probe_mask blacklist [#172330]

  - patches.drivers/alsa-post-sp1-hda-robust-probe: [ALSA]     hda-intel - Improve HD-audio codec probing robustness     [#172330]

  - patches.arch/i386-hpet-lost-interrupts-fix.patch:
    Backport i386 hpet lost interrupts code [#257035]

  - patches.fixes/megaraid_mbox-dell-cerc-support: Dell CERC     support for megaraid_mbox [#267134]

  - patches.fixes/nfsv4-MAXNAME-fix.diff: knfsd: query     filesystem for NFSv4 getattr of FATTR4_MAXNAME [#271803]
    -

patches.drivers/ide-amd74xx-add-ignore_enablebits-parameter: amd74xx:
add ignore_enable_bits module parameter [#272786]

  - patches.fixes/legacy-pty-count-kernel-parm.patch: Add a     kernel boot parameter to overwrite the legacy PTY count.
    The default value of 64 is insufficient occasionally     [#277846]

  - patches.fixes/lockd-grant-shutdown: Stop GRANT callback     from crashing if NFS server has been stopped. [#292478]

  - Kernel update to 2.6.16.54 [#298719] including (among     others) :

  - lots of md fixes

  - fix of sparc bugs

  - fix of TCP handling of SACK in bidirectional flows

  - fix of MCA bus matching

  - fix of PPC issues :

  - Fix osize too small errors when decoding mppe.

  - Fix output buffer size in ppp_decompress_frame(). -

patches.fixes/assign-task_struct.exit_code-before-taskstats_ exit.patch: Assign task_struct.exit_code before taskstats_exit() [#307504]

  - patches.fixes/bonding_no_addrconf_for_bond_slaves:
    bonding / ipv6: no addrconf for slaves separately from     master. [#310254]

  - patches.fixes/bonding_support_carrier_state_for_master:
    bonding: support carrier state for master [#310254] -

patches.fixes/fix-sys-devices-system-node-node0-meminfo-from

-having-anonpages-wrapped.patch: fix /sys/devices/system/node/node0/meminfo from having anonpages wrapped [#310744] -

patches.fixes/nfs-remove-bogus-cache-change-attribute-check. diff fix bogus cache change to make data available immediately, on direct write [#325877] -

patches.fixes/tcp-send-ACKs-each-2nd-received-segment.patch: Send ACKs each 2nd received segment. This fixes a problem where the tcp cubic congestion algorithm was too slow in converging [#327848]

  - patches.drivers/libata-fix-spindown: libata: fix disk     spindown on shutdown [#330722]

  - patches.fixes/scsi-reset-resid: busy status on tape     write results in incorrect residual [#330926]

  - patches.fixes/condense-output-of-show_free_areas.patch:
    Condense output of show_free_areas() [#331251]

  - patches.arch/powernowk8_family_freq_from_fiddid.patch:
    To find the frequency given the fid and did is family     dependent. [#332722]

  - patches.fixes/tcp-saner-thash_entries-default.patch:
    Limit the size of the TCP established hash to 512k     entries by default [#333273]

  - patches.drivers/alsa-emu10k1-spdif-mem-fix: [ALSA]     emu10k1 - Fix memory corruption [#333314]

  - patches.drivers/alsa-post-sp1-hda-stac-error-fix: [ALSA]     Fix error probing with STAC codecs [#333320] -

    patches.fixes/qla2xxx-avoid-duplicate-pci_disable_device     : Fixup patch to not refer to stale pointer [#333542]

  - large backport of dm-crypt fixes: [#333905]

  - patches.fixes/dm-disable_barriers.diff: dm: disable     barriers. -

patches.fixes/dm-crypt-restructure_for_workqueue_change.diff -

patches.fixes/dm-crypt-restructure_write_processing.diff

  - patches.fixes/dm-crypt-move_io_to_workqueue.diff

  - patches.fixes/dm-crypt-use_private_biosets.diff

  - patches.fixes/dm-crypt-fix_call_to_clone_init.diff -

patches.fixes/dm-crypt-fix_avoid_cloned_bio_ref_after_free.d iff

  - patches.fixes/dm-crypt-fix_remove_first_clone.diff -

patches.fixes/dm-crypt-use_smaller_bvecs_in_clones.diff -

patches.fixes/dm-crypt-fix_panic_on_large_request.diff

  - patches.fixes/initramfs-fix-cpio-hardlink-check.patch:
    initramfs: fix CPIO hardlink check [#334612]

  - patches.drivers/lpfc-8.1.10.12-update: driver update to     fix severe issues in lpfc 8.1.10.9 driver [#334630]     [#342044]

  - patches.fixes/nfs-direct-io-fix-1: NFS: Fix error     handling in nfs_direct_write_result() [#336200]

  - patches.fixes/nfs-direct-io-fix-2: NFS: Fix a refcount     leakage in O_DIRECT [#336200]

  - add patches.drivers/ibmvscsi-migration-login.patch     prohibit IO during adapter login process [#337980]

  - patches.arch/acpi_thinkpad_brightness_fix.patch: Take     care of latest Lenovo ThinkPad brightness control     [#338274] [#343660]

  - patches.fixes/ramdisk-2.6.23-corruption_fix.diff: rd:
    fix data corruption on memory pressure [#338643] -

    patches.fixes/fc_transport-remove-targets-on-host-remove     : memory use after free error in mptfc [#338730] -

patches.fixes/ipmi-ipmi_msghandler.c-fix-a-memory-leak.patch : IPMI:
ipmi_msghandler.c: fix a memory leak [#339413]

  - add patches.arch/ppc-pseries-rtas_ibm_suspend_me.patch     fix multiple bugs in rtas_ibm_suspend_me code [#339927]

  - patches.fixes/nfsacl-retval.diff: knfsd: fix spurious     EINVAL errors on first access of new filesystem     [#340873]

  - patches.fixes/avm-fix-capilib-locking: [ISDN] Fix random     hard freeze with AVM cards. [#341894]

  - patches.fixes/ipv6_rh_processing_fix: [IPV6]: Restore     semantics of Routing Header processing [#343100]

  - The following set of XEN fixes has been applied:
    [#343612]

  - patches.xen/14280-net-fake-carrier-flag.patch: netfront:
    Better fix for netfront_tx_slot_available().

  - patches.xen/14893-copy-more-skbs.patch: netback: Copy     skbuffs that are presented to the start_xmit() function.

  - patches.xen/157-netfront-skb-deref.patch: net front:
    Avoid deref'ing skb after it is potentially freed.

  - patches.xen/263-xfs-unmap.patch: xfs: eagerly remove     vmap mappings to avoid upsetting Xen.

  - patches.xen/xen-i386-set-fixmap: i386/PAE: avoid     temporarily inconsistent pte-s.

  - patches.xen/xen-isa-dma: Suppress all use of ISA DMA on     Xen.

  - patches.xen/xen-x86-panic-smp,

  - patches.xen/xen-netback-alloc,

  - patches.xen/xen-split-pt-lock,

  - patches.xen/137-netfront-copy-release.patch,

  - patches.xen/141-driver-autoload.patch,

  - patches.xen/xen-balloon-max-target,

  - patches.xen/xen-balloon-min,

  - patches.xen/xen-i386-highpte,

  - patches.xen/xen-intel-agp,

  - patches.xen/xen-multicall-check,

  - patches.xen/xen-x86-dcr-fallback,

  - patches.xen/xen-x86-pXX_val,

  - patches.xen/xen-x86-performance: Adjust.

  - patches.arch/acpi_backport_video.c.patch: Backport video     driver from 2.6.23-rc9 [#343660]

  - patches.arch/acpi_find_bcl_support.patch: Store     brightness/video functionality of ACPI provided by BIOS     [#343660]

Updated kernel packages that fix several security issues and several bugs in the Red Hat Enterprise Linux 5 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.

These new kernel packages fix the following security issues :

A flaw was found in the virtual filesystem (VFS). An unprivileged local user could truncate directories to which they had write permission; this could render the contents of the directory inaccessible. (CVE-2008-0001, Important)

A flaw was found in the Xen PAL emulation on Intel 64 platforms. A guest Hardware-assisted virtual machine (HVM) could read the arbitrary physical memory of the host system, which could make information available to unauthorized users. (CVE-2007-6416, Important)

A flaw was found in the way core dump files were created. If a local user can get a root-owned process to dump a core file into a directory, which the user has write access to, they could gain read access to that core file, potentially containing sensitive information. (CVE-2007-6206, Moderate)

A buffer overflow flaw was found in the CIFS virtual file system. A remote,authenticated user could issue a request that could lead to a denial of service. (CVE-2007-5904, Moderate)

A flaw was found in the 'sysfs_readdir' function. A local user could create a race condition which would cause a denial of service (kernel oops). (CVE-2007-3104, Moderate)

As well, these updated packages fix the following bugs :

* running the 'strace -f' command caused strace to hang, without displaying information about child processes.

* unmounting an unresponsive, interruptable NFS mount, for example, one mounted with the 'intr' option, may have caused a system crash.

* a bug in the s2io.ko driver prevented VLAN devices from being added.
Attempting to add a device to a VLAN, for example, running the 'vconfig add [device-name] [vlan-id]' command caused vconfig to fail.

* tux used an incorrect open flag bit. This caused problems when building packages in a chroot environment, such as mock, which is used by the koji build system.

Red Hat Enterprise Linux 5 users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues.

It was discovered that the ALSA /proc interface did not write the correct number of bytes when reporting memory allocations. A local attacker might be able to access sensitive kernel memory, leading to a loss of privacy. (CVE-2007-4571)

Multiple buffer overflows were discovered in the handling of CIFS filesystems. A malicious CIFS server could cause a client system crash or possibly execute arbitrary code with kernel privileges.
(CVE-2007-5904)

It was discovered that PowerPC kernels did not correctly handle reporting certain system details. By requesting a specific set of information, a local attacker could cause a system crash resulting in a denial of service. (CVE-2007-6694)

It was discovered that some device driver fault handlers did not correctly verify memory ranges. A local attacker could exploit this to access sensitive kernel memory, possibly leading to a loss of privacy.
(CVE-2008-0007)

It was discovered that CPU resource limits could be bypassed. A malicious local user could exploit this to avoid administratively imposed resource limits. (CVE-2008-1294)

A race condition was discovered between dnotify fcntl() and close() in the kernel. If a local attacker performed malicious dnotify requests, they could cause memory consumption leading to a denial of service, or possibly send arbitrary signals to any process. (CVE-2008-1375)

On SMP systems, a race condition existed in fcntl(). Local attackers could perform malicious locks, causing system crashes and leading to a denial of service. (CVE-2008-1669).

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-2008-1615: On x86_64 a denial of service attack could be used by local attackers to immediately panic / crash the machine.

CVE-2008-2358: A security problem in DCCP was fixed, which could be used by remote attackers to crash the machine.

CVE-2007-6206: An information leakage during coredumping of root processes was fixed.

CVE-2007-6712: A integer overflow in the hrtimer_forward function (hrtimer.c) in Linux kernel, when running on 64-bit systems, allows local users to cause a denial of service (infinite loop) via a timer with a large expiry value, which causes the timer to always be expired.

CVE-2008-2136: A problem in SIT IPv6 tunnel handling could be used by remote attackers to immediately crash the machine.

CVE-2008-1669: Fixed a SMP ordering problem in fcntl_setlk could potentially allow local attackers to execute code by timing file locking.

CVE-2008-1367: Clear the 'direction' flag before calling signal handlers. For specific not yet identified programs under specific timing conditions this could potentially have caused memory corruption or code execution.

CVE-2008-1375: Fixed a dnotify race condition, which could be used by local attackers to potentially execute code.

CVE-2007-6282: A remote attacker could crash the IPSec/IPv6 stack by sending a bad ESP packet. This requires the host to be able to receive such packets (default filtered by the firewall).

CVE-2007-5500: A ptrace bug could be used by local attackers to hang their own processes indefinitely.

CVE-2007-5904: A remote buffer overflow in CIFS was fixed which could be used by remote attackers to crash the machine or potentially execute code.

And the following bugs (numbers are https://bugzilla.novell.com/ references) :

  - patches.arch/x86-nosmp-implies-noapic.patch: When     booting with nosmp or maxcpus=0 on i386 or x86-64, we     must disable the I/O APIC, otherwise the system won't     boot in most cases (bnc#308540).

  - patches.arch/i386-at-sysinfo-ehdr: i386: make     AT_SYSINFO_EHDR consistent with AT_SYSINFO (bnc#289641).

  - patches.suse/bonding-workqueue: Update to fix a hang     when closing a bonding device (342994).

  - patches.fixes/mptspi-dv-renegotiate-oops: mptlinux     crashes on kernel 2.6.22 (bnc#271749).

Updated kernel packages that fix various security issues and several bugs are now available for Red Hat Enterprise Linux 4.

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

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

A buffer overflow flaw was found in the CIFS virtual file system. A remote authenticated user could issue a request that could lead to a denial of service. (CVE-2007-5904, Moderate)

As well, these updated packages fix the following bugs :

* a bug was found in the Linux kernel audit subsystem. When the audit daemon was setup to log the execve system call with a large number of arguments, the kernel could run out out memory while attempting to create audit log messages. This could cause a kernel panic. In these updated packages, large audit messages are split into acceptable sizes, which resolves this issue.

* on certain Intel chipsets, it was not possible to load the acpiphp module using the 'modprobe acpiphp' command. Because the acpiphp module did not recurse across PCI bridges, hardware detection for PCI hot plug slots failed. In these updated packages, hardware detection works correctly.

* on IBM System z architectures that run the IBM z/VM hypervisor, the IBM eServer zSeries HiperSockets network interface (layer 3) allowed ARP packets to be sent and received, even when the 'NOARP' flag was set. These ARP packets caused problems for virtual machines.

* it was possible for the iounmap function to sleep while holding a lock. This may have caused a deadlock for drivers and other code that uses the iounmap function. In these updated packages, the lock is dropped before the sleep code is called, which resolves this issue.

Red Hat Enterprise Linux 4 users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues.

The remote Redhat Enterprise Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2008:0089 advisory.

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

    These new kernel packages fix the following security issues:

    A flaw was found in the virtual filesystem (VFS). An unprivileged local     user could truncate directories to which they had write permission; this     could render the contents of the directory inaccessible. (CVE-2008-0001,     Important)

    A flaw was found in the Xen PAL emulation on Intel 64 platforms. A guest     Hardware-assisted virtual machine (HVM) could read the arbitrary physical     memory of the host system, which could make information available to     unauthorized users. (CVE-2007-6416, Important)

    A flaw was found in the way core dump files were created. If a local user     can get a root-owned process to dump a core file into a directory, which     the user has write access to, they could gain read access to that core     file, potentially containing sensitive information. (CVE-2007-6206, Moderate)

    A buffer overflow flaw was found in the CIFS virtual file system. A     remote,authenticated user could issue a request that could lead to a denial     of service. (CVE-2007-5904, Moderate)

    A flaw was found in the sysfs_readdir function. A local user could create     a race condition which would cause a denial of service (kernel oops).
    (CVE-2007-3104, Moderate)

    As well, these updated packages fix the following bugs:

    * running the strace -f command caused strace to hang, without displaying     information about child processes.

    * unmounting an unresponsive, interruptable NFS mount, for example, one     mounted with the intr option, may have caused a system crash.

    * a bug in the s2io.ko driver prevented VLAN devices from being added.
    Attempting to add a device to a VLAN, for example, running the vconfig     add [device-name] [vlan-id] command caused vconfig to fail.

    * tux used an incorrect open flag bit. This caused problems when building     packages in a chroot environment, such as mock, which is used by the koji     build system.

    Red Hat Enterprise Linux 5 users are advised to upgrade to these updated     packages, which contain backported patches to resolve these issues.

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.

This kernel update fixes the following security problems :

++ CVE-2007-3104: The sysfs_readdir function in the Linux kernel 2.6 allows local users to cause a denial of service (kernel OOPS) by dereferencing a NULL pointer to an inode in a dentry.

++ CVE-2007-4997: A 2 byte buffer underflow in the ieee80211 stack was fixed, which might be used by attackers in the local WLAN reach to crash the machine.

++ CVE-2007-3740: The CIFS filesystem, when Unix extension support is enabled, did not honor the umask of a process, which allowed local users to gain privileges.

++ CVE-2007-4573: It was possible for local user to become root by exploiting a bug in the IA32 system call emulation. This problem affects the x86_64 platform only, on all distributions.

This problem was fixed for regular kernels, but had not been fixed for the XEN kernels. This update fixes the problem also for the XEN kernels.

++ CVE-2007-4308: The (1) aac_cfg_open and (2) aac_compat_ioctl functions in the SCSI layer ioctl path in aacraid did not check permissions for ioctls, which might have allowed local users to cause a denial of service or gain privileges.

++ CVE-2007-3843: The Linux kernel checked the wrong global variable for the CIFS sec mount option, which might allow remote attackers to spoof CIFS network traffic that the client configured for security signatures, as demonstrated by lack of signing despite sec=ntlmv2i in a SetupAndX request.

++ CVE-2007-5904: Multiple buffer overflows in CIFS VFS in the Linux kernel allowed remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via long SMB responses that trigger the overflows in the SendReceive function.

This requires the attacker to mis-present / replace a CIFS server the client machine is connected to.

++ CVE-2007-6063: Buffer overflow in the isdn_net_setcfg function in isdn_net.c in the Linux kernel allowed local users to have an unknown impact via a crafted argument to the isdn_ioctl function.

Furthermore, this kernel catches up to the SLE 10 state of the kernel, with numerous additional fixes.

This kernel update fixes the following security problems :

  - The sysfs_readdir function in the Linux kernel 2.6     allows local users to cause a denial of service (kernel     OOPS) by dereferencing a NULL pointer to an inode in a     dentry. (CVE-2007-3104)

  - A 2 byte buffer underflow in the ieee80211 stack was     fixed, which might be used by attackers in the local     WLAN reach to crash the machine. (CVE-2007-4997)

  - The CIFS filesystem, when Unix extension support is     enabled, did not honor the umask of a process, which     allowed local users to gain privileges. (CVE-2007-3740)

  - It was possible for local user to become root by     exploiting a bug in the IA32 system call emulation. This     problem affects the x86_64 platform only, on all     distributions. (CVE-2007-4573)

    This problem was fixed for regular kernels, but had not     been fixed for the XEN kernels. This update fixes the     problem also for the XEN kernels.

  - The (1) aac_cfg_open and (2) aac_compat_ioctl functions     in the SCSI layer ioctl path in aacraid did not check     permissions for ioctls, which might have allowed local     users to cause a denial of service or gain privileges.
    (CVE-2007-4308)

  - The Linux kernel checked the wrong global variable for     the CIFS sec mount option, which might allow remote     attackers to spoof CIFS network traffic that the client     configured for security signatures, as demonstrated by     lack of signing despite sec=ntlmv2i in a SetupAndX     request. (CVE-2007-3843)

  - Multiple buffer overflows in CIFS VFS in the Linux     kernel allowed remote attackers to cause a denial of     service (crash) and possibly execute arbitrary code via     long SMB responses that trigger the overflows in the     SendReceive function. (CVE-2007-5904)

    This requires the attacker to mis-present / replace a     CIFS server the client machine is connected to.

  - Buffer overflow in the isdn_net_setcfg function in     isdn_net.c in the Linux kernel allowed local users to     have an unknown impact via a crafted argument to the     isdn_ioctl function. (CVE-2007-6063)

and the following non security bugs :

-

patches.drivers/pci-delete-ACPI-hook-from-pci_set_power_stat e.patch:
Delete ACPI hook from pci_set_power_state() [#162320] Still execute the code on Lenovo ThinkPads (or USB ports do not work anymore after suspend [#329232]

  - patches.drivers/alsa-post-sp1-hda-probe-blacklist:
    [ALSA] hda-intel - Add probe_mask blacklist [#172330]

  - patches.drivers/alsa-post-sp1-hda-robust-probe: [ALSA]     hda-intel - Improve HD-audio codec probing robustness     [#172330]

  - patches.arch/i386-hpet-lost-interrupts-fix.patch:
    Backport i386 hpet lost interrupts code [#257035]

  - patches.fixes/megaraid_mbox-dell-cerc-support: Dell CERC     support for megaraid_mbox [#267134]

  - patches.fixes/nfsv4-MAXNAME-fix.diff: knfsd: query     filesystem for NFSv4 getattr of FATTR4_MAXNAME [#271803]
    -

patches.drivers/ide-amd74xx-add-ignore_enablebits-parameter: amd74xx:
add ignore_enable_bits module parameter [#272786]

  - patches.fixes/legacy-pty-count-kernel-parm.patch: Add a     kernel boot parameter to overwrite the legacy PTY count.
    The default value of 64 is insufficient occasionally     [#277846]

  - patches.fixes/lockd-grant-shutdown: Stop GRANT callback     from crashing if NFS server has been stopped. [#292478]

  - Kernel update to 2.6.16.54 [#298719] including (among     others) :

  - lots of md fixes

  - fix of sparc bugs

  - fix of TCP handling of SACK in bidirectional flows

  - fix of MCA bus matching

  - fix of PPC issues :

  - Fix osize too small errors when decoding mppe.

  - Fix output buffer size in ppp_decompress_frame(). -

patches.fixes/assign-task_struct.exit_code-before-taskstats_ exit.patch: Assign task_struct.exit_code before taskstats_exit() [#307504]

  - patches.fixes/bonding_no_addrconf_for_bond_slaves:
    bonding / ipv6: no addrconf for slaves separately from     master. [#310254]

  - patches.fixes/bonding_support_carrier_state_for_master:
    bonding: support carrier state for master [#310254] -

patches.fixes/fix-sys-devices-system-node-node0-meminfo-from

-having-anonpages-wrapped.patch: fix /sys/devices/system/node/node0/meminfo from having anonpages wrapped [#310744] -

patches.fixes/nfs-remove-bogus-cache-change-attribute-check. diff fix bogus cache change to make data available immediately, on direct write [#325877] -

patches.fixes/tcp-send-ACKs-each-2nd-received-segment.patch: Send ACKs each 2nd received segment. This fixes a problem where the tcp cubic congestion algorithm was too slow in converging [#327848]

  - patches.drivers/libata-fix-spindown: libata: fix disk     spindown on shutdown [#330722]

  - patches.fixes/scsi-reset-resid: busy status on tape     write results in incorrect residual [#330926]

  - patches.fixes/condense-output-of-show_free_areas.patch:
    Condense output of show_free_areas() [#331251]

  - patches.arch/powernowk8_family_freq_from_fiddid.patch:
    To find the frequency given the fid and did is family     dependent. [#332722]

  - patches.fixes/tcp-saner-thash_entries-default.patch:
    Limit the size of the TCP established hash to 512k     entries by default [#333273]

  - patches.drivers/alsa-emu10k1-spdif-mem-fix: [ALSA]     emu10k1 - Fix memory corruption [#333314]

  - patches.drivers/alsa-post-sp1-hda-stac-error-fix: [ALSA]     Fix error probing with STAC codecs [#333320] -

    patches.fixes/qla2xxx-avoid-duplicate-pci_disable_device     : Fixup patch to not refer to stale pointer [#333542]

  - large backport of dm-crypt fixes: [#333905]

  - patches.fixes/dm-disable_barriers.diff: dm: disable     barriers. -

patches.fixes/dm-crypt-restructure_for_workqueue_change.diff -

patches.fixes/dm-crypt-restructure_write_processing.diff

  - patches.fixes/dm-crypt-move_io_to_workqueue.diff

  - patches.fixes/dm-crypt-use_private_biosets.diff

  - patches.fixes/dm-crypt-fix_call_to_clone_init.diff -

patches.fixes/dm-crypt-fix_avoid_cloned_bio_ref_after_free.d iff

  - patches.fixes/dm-crypt-fix_remove_first_clone.diff -

patches.fixes/dm-crypt-use_smaller_bvecs_in_clones.diff -

patches.fixes/dm-crypt-fix_panic_on_large_request.diff

  - patches.fixes/initramfs-fix-cpio-hardlink-check.patch:
    initramfs: fix CPIO hardlink check [#334612]

  - patches.drivers/lpfc-8.1.10.12-update: driver update to     fix severe issues in lpfc 8.1.10.9 driver [#334630]     [#342044]

  - patches.fixes/nfs-direct-io-fix-1: NFS: Fix error     handling in nfs_direct_write_result() [#336200]

  - patches.fixes/nfs-direct-io-fix-2: NFS: Fix a refcount     leakage in O_DIRECT [#336200]

  - add patches.drivers/ibmvscsi-migration-login.patch     prohibit IO during adapter login process [#337980]

  - patches.arch/acpi_thinkpad_brightness_fix.patch: Take     care of latest Lenovo ThinkPad brightness control     [#338274] [#343660]

  - patches.fixes/ramdisk-2.6.23-corruption_fix.diff: rd:
    fix data corruption on memory pressure [#338643] -

    patches.fixes/fc_transport-remove-targets-on-host-remove     : memory use after free error in mptfc [#338730] -

patches.fixes/ipmi-ipmi_msghandler.c-fix-a-memory-leak.patch : IPMI:
ipmi_msghandler.c: fix a memory leak [#339413]

  - add patches.arch/ppc-pseries-rtas_ibm_suspend_me.patch     fix multiple bugs in rtas_ibm_suspend_me code [#339927]

  - patches.fixes/nfsacl-retval.diff: knfsd: fix spurious     EINVAL errors on first access of new filesystem     [#340873]

  - patches.fixes/avm-fix-capilib-locking: [ISDN] Fix random     hard freeze with AVM cards. [#341894]

  - patches.fixes/ipv6_rh_processing_fix: [IPV6]: Restore     semantics of Routing Header processing [#343100]

  - The following set of XEN fixes has been applied:
    [#343612]

  - patches.xen/14280-net-fake-carrier-flag.patch: netfront:
    Better fix for netfront_tx_slot_available().

  - patches.xen/14893-copy-more-skbs.patch: netback: Copy     skbuffs that are presented to the start_xmit() function.

  - patches.xen/157-netfront-skb-deref.patch: net front:
    Avoid deref'ing skb after it is potentially freed.

  - patches.xen/263-xfs-unmap.patch: xfs: eagerly remove     vmap mappings to avoid upsetting Xen.

  - patches.xen/xen-i386-set-fixmap: i386/PAE: avoid     temporarily inconsistent pte-s.

  - patches.xen/xen-isa-dma: Suppress all use of ISA DMA on     Xen.

  - patches.xen/xen-x86-panic-smp,

  - patches.xen/xen-netback-alloc,

  - patches.xen/xen-split-pt-lock,

  - patches.xen/137-netfront-copy-release.patch,

  - patches.xen/141-driver-autoload.patch,

  - patches.xen/xen-balloon-max-target,

  - patches.xen/xen-balloon-min,

  - patches.xen/xen-i386-highpte,

  - patches.xen/xen-intel-agp,

  - patches.xen/xen-multicall-check,

  - patches.xen/xen-x86-dcr-fallback,

  - patches.xen/xen-x86-pXX_val,

  - patches.xen/xen-x86-performance: Adjust.

  - patches.arch/acpi_backport_video.c.patch: Backport video     driver from 2.6.23-rc9 [#343660]

  - patches.arch/acpi_find_bcl_support.patch: Store     brightness/video functionality of ACPI provided by BIOS     [#343660]

Fixes for ia64 :

-

patches.fixes/fix-the-graphic-corruption-issue-on-ia64-machi nes.patch: Fix the graphic corruption issue on IA64 machines [#241041]

Fixes for S/390 :

  - IBM Patchcluster 18 [#333421,#340129,#341000]

  - Problem-ID: 39323 - qeth: discard inbound packets with     unknown header id

  - Problem-ID: 39542 - cio: Incorrect check for activity in     cmf

  - Problem-ID: 38321 - kernel: Reboot of large z/VM guests     takes a lot of time

  - Problem-ID: 40293 - kernel: pfault disabled

  - Problem-ID: 40296 - cio: change device sense procedure     to work with PAV aliases

  - Problem-ID: 39981 - zfcp: Remove SCSI devices when     removing complete adapter

  - Problem-ID: 40331 - zfcp: Deadlock when adding invalid     LUN

  - Problem-ID: 40333 - zfcp: Reduce flood on hba trace

  - Fix kprobe on 'bc' instruction [#301563] For further     description of the named Problem-IDs, please look to     http://www-128.ibm.com/developerworks/linux/linux390/oct     ober 2005_recommended.html

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 :

This is an update to DSA 1428-1 which omitted a reference to CVE-2007-5904.

  - CVE-2007-3104     Eric Sandeen provided a backport of Tejun Heo's fix for     a local denial of service vulnerability in sysfs. Under     memory pressure, a dentry structure maybe reclaimed     resulting in a bad pointer dereference causing an oops     during a readdir.

  - CVE-2007-4997     Chris Evans discovered an issue with certain drivers     that make use of the Linux kernel's ieee80211 layer. A     remote user could generate a malicious 802.11 frame that     could result in a denial of service (crash). The ipw2100     driver is known to be affected by this issue, while the     ipw2200 is believed not to be.

  - CVE-2007-5500     Scott James Remnant diagnosed a coding error in the     implementation of ptrace which could be used by a local     user to cause the kernel to enter an infinite loop.

  - CVE-2007-5904     Przemyslaw Wegrzyn discovered an issue in the CIFS     filesystem that could allow a malicious server to cause     a denial of service (crash) by overflowing a buffer.

These problems have been fixed in the stable distribution in version 2.6.18.dfsg.1-13etch5.

The following matrix lists additional packages that were rebuilt for compatibility with or to take advantage of this update :

                           Debian 4.0 (etch)           fai-kernels               1.17+etch.13etch5           user-mode-linux           2.6.18-1um-2etch.13etch5

This kernel update fixes the following security problems :

++ CVE-2007-5500: A buggy condition in the ptrace attach logic can be used by local attackers to hang the machine.

++ CVE-2007-5501: The tcp_sacktag_write_queue function in net/ipv4/tcp_input.c allows remote attackers to cause a denial of service (crash) via crafted ACK responses that trigger a NULL pointer dereference.

++ CVE-2007-5904: Multiple buffer overflows in CIFS VFS allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via long SMB responses that trigger the overflows in the SendReceive function.

This requires the attacker to set up a malicious Samba/CIFS server and getting the client to connect to it.

and the following non security bugs :

++ Kernel update to 2.6.22.13 (includes the fixes for CVE-2007-5500 and CVE-2007-5501 described above)

++ patches.fixes/input-add-ms-vm-to-noloop.patch: add i8042.noloop quirk for Microsoft Virtual Machine [#297546]

++ patches.fixes/mac80211_fix_scan.diff: Make per-SSID scanning work [#299598] [#327684]

++ patches.drivers/kobil_sct_backport.patch: Fix segfault for Kobil USB Plus cardreaders [#327664]

++ patches.arch/acpi_thermal_passive_blacklist.patch: Avoid critical temp shutdowns on specific ThinkPad T4x(p) and R40 [#333043]

++ patches.fixes/microtek_hal.diff: Make the microtek driver work with HAL [#339743]

++ patches.fixes/pci-fix-unterminated-pci_device_id-lists: fix unterminated pci_device_id lists [#340527]

++ patches.fixes/nfsacl-retval.diff: knfsd: fix spurious EINVAL errors on first access of new filesystem [#340873]

The remote CentOS system is missing a security update which has been documented in Red Hat advisory RHSA-2008-0167.

The remote CentOS system is missing a security update which has been documented in Red Hat advisory RHSA-2008-0089.

ID	Name	Product	Family	Severity
67665	Oracle Linux 4 : kernel (ELSA-2008-0167)	Nessus	Oracle Linux Local Security Checks	medium
67645	Oracle Linux 5 : Important: / kernel (ELSA-2008-0089)	Nessus	Oracle Linux Local Security Checks	medium
60372	Scientific Linux Security Update : kernel on SL4.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	medium
60351	Scientific Linux Security Update : kernel on SL5.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	medium
59125	SuSE 10 Security Update : Linux kernel (ZYPP Patch Number 4745)	Nessus	SuSE Local Security Checks	high
43672	CentOS 5 : kernel (CESA-2008:0089)	Nessus	CentOS Local Security Checks	medium
33255	Ubuntu 6.06 LTS / 7.04 / 7.10 : linux-source-2.6.15/20/22 vulnerabilities (USN-618-1)	Nessus	Ubuntu Local Security Checks	high
33252	openSUSE 10 Security Update : kernel (kernel-5336)	Nessus	SuSE Local Security Checks	high
31595	RHEL 4 : kernel (RHSA-2008:0167)	Nessus	Red Hat Local Security Checks	medium
31586	CentOS 4 : kernel (CESA-2008:0167)	Nessus	CentOS Local Security Checks	medium
30090	RHEL 5 : kernel (RHSA-2008:0089)	Nessus	Red Hat Local Security Checks	critical
29880	openSUSE 10 Security Update : kernel (kernel-4752)	Nessus	SuSE Local Security Checks	high
29489	SuSE 10 Security Update : Linux kernel (ZYPP Patch Number 4741)	Nessus	SuSE Local Security Checks	high
29263	Debian DSA-1428-2 : linux-2.6 - several vulnerabilities	Nessus	Debian Local Security Checks	high
29248	openSUSE 10 Security Update : kernel (kernel-4749)	Nessus	SuSE Local Security Checks	high
801448	CentOS RHSA-2008-0167 Security Check	Log Correlation Engine	Generic	high
801445	CentOS RHSA-2008-0089 Security Check	Log Correlation Engine	Generic	high

Detections

Analytics

CVE-2007-5904

critical

Tenable Plugins

medium

medium

medium

medium

high

medium

high

high

medium

medium

critical

high

high

high

high

high

high