The wait_task_stopped function in the Linux kernel before 2.6.23.8 checks a TASK_TRACED bit instead of an exit_state value, which allows local users to cause a denial of service (machine crash) via unspecified vectors. NOTE: some of these details are obtained from third party information.

From Red Hat Security Advisory 2008:0055 :

Updated kernel packages that fix several security issues and a bug in the Red Hat Enterprise Linux 4 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 updated kernel packages fix the following security issues :

A flaw was found in the virtual filesystem (VFS). A local unprivileged 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 implementation of ptrace. A local unprivileged user could trigger this flaw and possibly cause a denial of service (system hang). (CVE-2007-5500, Important)

A flaw was found in the way the Red Hat Enterprise Linux 4 kernel handled page faults when a CPU used the NUMA method for accessing memory on Itanium architectures. A local unprivileged user could trigger this flaw and cause a denial of service (system panic).
(CVE-2007-4130, Important)

A possible NULL pointer dereference was found in the chrp_show_cpuinfo function when using the PowerPC architecture. This may have allowed a local unprivileged user to cause a denial of service (crash).
(CVE-2007-6694, Moderate)

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. This could potentially grant unauthorized access to sensitive information. (CVE-2007-6206, Moderate)

Two buffer overflow flaws were found in the Linux kernel ISDN subsystem. A local unprivileged user could use these flaws to cause a denial of service. (CVE-2007-6063, CVE-2007-6151, Moderate)

As well, these updated packages fix the following bug :

* when moving volumes that contain multiple segments, and a mirror segment is not the first in the mapping table, running the 'pvmove /dev/[device] /dev/[device]' command caused a kernel panic. A 'kernel:
Unable to handle kernel paging request at virtual address [address]' error was logged by syslog.

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

These updated kernel packages fix the following security issues :

A flaw was found in the virtual filesystem (VFS). A local unprivileged 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 implementation of ptrace. A local unprivileged user could trigger this flaw and possibly cause a denial of service (system hang). (CVE-2007-5500, Important)

A flaw was found in the way the Red Hat Enterprise Linux 4 kernel handled page faults when a CPU used the NUMA method for accessing memory on Itanium architectures. A local unprivileged user could trigger this flaw and cause a denial of service (system panic).
(CVE-2007-4130, Important)

A possible NULL pointer dereference was found in the chrp_show_cpuinfo function when using the PowerPC architecture. This may have allowed a local unprivileged user to cause a denial of service (crash).
(CVE-2007-6694, Moderate)

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. This could potentially grant unauthorized access to sensitive information. (CVE-2007-6206, Moderate)

Two buffer overflow flaws were found in the Linux kernel ISDN subsystem. A local unprivileged user could use these flaws to cause a denial of service. (CVE-2007-6063, CVE-2007-6151, Moderate)

As well, these updated packages fix the following bug :

  - when moving volumes that contain multiple segments, and     a mirror segment is not the first in the mapping table,     running the 'pvmove /dev/[device] /dev/[device]' command     caused a kernel panic. A 'kernel: Unable to handle     kernel paging request at virtual address [address]'     error was logged by syslog.

This kernel update fixes quite a number of security problems :

  - 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-2007-6282)

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

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

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

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

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

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

  - 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-2008-1367)

  - The isdn_ioctl function in isdn_common.c allowed local     users to cause a denial of service via a crafted ioctl     struct in which ioctls is not null terminated, which     triggers a buffer overflow. (CVE-2007-6151)

Non security related changes :

OCFS2 was updated to version v1.2.9-1-r3100.

Also a huge number of bugs were fixed. Please refer to the RPM changelog for a detailed list.

The wait_task_stopped function in the Linux kernel before 2.6.23.8 checks a TASK_TRACED bit instead of an exit_state value, which allows local users to cause a denial of service (machine crash) via unspecified vectors. NOTE: some of these details are obtained from third-party information. (CVE-2007-5500)

The tcp_sacktag_write_queue function in the Linux kernel 2.6.21 through 2.6.23.7 allowed remote attackers to cause a denial of service (crash) via crafted ACK responses that trigger a NULL pointer dereference (CVE-2007-5501).

The do_corefump function in fs/exec.c in the Linux kernel prior to 2.6.24-rc3 did not change the UID of a core dump file if it exists before a root process creates a core dump in the same location, which could possibly allow local users to obtain sensitive information (CVE-2007-6206).

VFS in the Linux kernel before 2.6.22.16 performed tests of access mode by using the flag variable instead of the acc_mode variable, which could possibly allow local users to bypass intended permissions and remove directories (CVE-2008-0001).

The Linux kernel prior to 2.6.22.17, when using certain drivers that register a fault handler that does not perform range checks, allowed local users to access kernel memory via an out-of-range offset (CVE-2008-0007).

A flaw in the vmsplice system call did not properly verify address arguments passed by user-space processes, which allowed local attackers to overwrite arbitrary kernel memory and gain root privileges (CVE-2008-0600).

Mandriva urges all users to upgrade to these new kernels immediately as the CVE-2008-0600 flaw is being actively exploited. This issue only affects 2.6.17 and newer Linux kernels, so neither Corporate 3.0 nor Corporate 4.0 are affected.

Additionally, this kernel updates the version from 2.6.22.12 to 2.6.22.18 and fixes numerous other bugs, including :

  - fix freeze when ejecting a cm40x0 PCMCIA card

    - fix crash on unloading netrom

    - fixes alsa-related sound issues on Dell XPS M1210 and       M1330 models

    - the HZ value was increased on the laptop kernel to       increase interactivity and reduce latency

  - netfilter ipset, psd, and ifwlog support was re-enabled

    - unionfs was reverted to a working 1.4 branch that is       less buggy

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

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

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

The Datagram Congestion Control Protocol (DCCP) subsystem in the Linux kernel 2.6.18, and probably other versions, does not properly check feature lengths, which might allow remote attackers to execute arbitrary code, related to an unspecified overflow. (CVE-2008-2358)

VFS in the Linux kernel before 2.6.22.16, and 2.6.23.x before 2.6.23.14, performs tests of access mode by using the flag variable instead of the acc_mode variable, which might allow local users to bypass intended permissions and remove directories. (CVE-2008-0001)

Linux kernel before 2.6.22.17, when using certain drivers that register a fault handler that does not perform range checks, allows local users to access kernel memory via an out-of-range offset.
(CVE-2008-0007)

Integer overflow in the hrtimer_start function in kernel/hrtimer.c in the Linux kernel before 2.6.23.10 allows local users to execute arbitrary code or cause a denial of service (panic) via a large relative timeout value. NOTE: some of these details are obtained from third-party information. (CVE-2007-5966)

The shmem_getpage function (mm/shmem.c) in Linux kernel 2.6.11 through 2.6.23 does not properly clear allocated memory in some rare circumstances related to tmpfs, which might allow local users to read sensitive kernel data or cause a denial of service (crash).
(CVE-2007-6417)

The isdn_ioctl function in isdn_common.c in Linux kernel 2.6.23 allows local users to cause a denial of service via a crafted ioctl struct in which iocts is not null terminated, which triggers a buffer overflow.
(CVE-2007-6151)

The do_coredump function in fs/exec.c in Linux kernel 2.4.x and 2.6.x up to 2.6.24-rc3, and possibly other versions, does not change the UID of a core dump file if it exists before a root process creates a core dump in the same location, which might allow local users to obtain sensitive information. (CVE-2007-6206)

Buffer overflow in the isdn_net_setcfg function in isdn_net.c in Linux kernel 2.6.23 allows local users to have an unknown impact via a crafted argument to the isdn_ioctl function. (CVE-2007-6063)

The wait_task_stopped function in the Linux kernel before 2.6.23.8 checks a TASK_TRACED bit instead of an exit_state value, which allows local users to cause a denial of service (machine crash) via unspecified vectors. NOTE: some of these details are obtained from third-party information. (CVE-2007-5500)

The minix filesystem code in Linux kernel 2.6.x before 2.6.24, including 2.6.18, allows local users to cause a denial of service (hang) via a malformed minix file stream that triggers an infinite loop in the minix_bmap function. NOTE: this issue might be due to an integer overflow or signedness error. (CVE-2006-6058)

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

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

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).

The minix filesystem did not properly validate certain filesystem values. If a local attacker could trick the system into attempting to mount a corrupted minix filesystem, the kernel could be made to hang for long periods of time, resulting in a denial of service.
(CVE-2006-6058)

Alexander Schulze discovered that the skge driver does not properly use the spin_lock and spin_unlock functions. Remote attackers could exploit this by sending a flood of network traffic and cause a denial of service (crash). (CVE-2006-7229)

Hugh Dickins discovered that hugetlbfs performed certain prio_tree calculations using HPAGE_SIZE instead of PAGE_SIZE. A local user could exploit this and cause a denial of service via kernel panic.
(CVE-2007-4133)

Chris Evans discovered an issue with certain drivers that use the ieee80211_rx function. Remote attackers could send a crafted 802.11 frame and cause a denial of service via crash. (CVE-2007-4997)

Alex Smith discovered an issue with the pwc driver for certain webcam devices. A local user with physical access to the system could remove the device while a userspace application had it open and cause the USB subsystem to block. (CVE-2007-5093)

Scott James Remnant discovered a coding error in ptrace. Local users could exploit this and cause the kernel to enter an infinite loop.
(CVE-2007-5500)

Venustech AD-LAB discovered a buffer overflow in the isdn net subsystem. This issue is exploitable by local users via crafted input to the isdn_ioctl function. (CVE-2007-6063)

It was discovered that the isdn subsystem did not properly check for NULL termination when performing ioctl handling. A local user could exploit this to cause a denial of service. (CVE-2007-6151)

Blake Frantz discovered that when a root process overwrote an existing core file, the resulting core file retained the previous core file's ownership. Local users could exploit this to gain access to sensitive information. (CVE-2007-6206)

Hugh Dickins discovered the when using the tmpfs filesystem, under rare circumstances, a kernel page may be improperly cleared. A local user may be able to exploit this and read sensitive kernel data or cause a denial of service via crash. (CVE-2007-6417)

Bill Roman discovered that the VFS subsystem did not properly check access modes. A local user may be able to gain removal privileges on directories. (CVE-2008-0001).

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.

The minix filesystem did not properly validate certain filesystem values. If a local attacker could trick the system into attempting to mount a corrupted minix filesystem, the kernel could be made to hang for long periods of time, resulting in a denial of service. This was only vulnerable in Ubuntu 7.04 and 7.10. (CVE-2006-6058)

The signal handling on PowerPC systems using HTX allowed local users to cause a denial of service via floating point corruption. This was only vulnerable in Ubuntu 6.10 and 7.04. (CVE-2007-3107)

The Linux kernel did not properly validate the hop-by-hop IPv6 extended header. Remote attackers could send a crafted IPv6 packet and cause a denial of service via kernel panic. This was only vulnerable in Ubuntu 7.04. (CVE-2007-4567)

The JFFS2 filesystem with ACL support enabled did not properly store permissions during inode creation and ACL setting. Local users could possibly access restricted files after a remount. This was only vulnerable in Ubuntu 7.04 and 7.10. (CVE-2007-4849)

Chris Evans discovered an issue with certain drivers that use the ieee80211_rx function. Remote attackers could send a crafted 802.11 frame and cause a denial of service via crash. This was only vulnerable in Ubuntu 7.04 and 7.10. (CVE-2007-4997)

Alex Smith discovered an issue with the pwc driver for certain webcam devices. A local user with physical access to the system could remove the device while a userspace application had it open and cause the USB subsystem to block. This was only vulnerable in Ubuntu 7.04.
(CVE-2007-5093)

Scott James Remnant discovered a coding error in ptrace. Local users could exploit this and cause the kernel to enter an infinite loop.
This was only vulnerable in Ubuntu 7.04 and 7.10. (CVE-2007-5500)

It was discovered that the Linux kernel could dereference a NULL pointer when processing certain IPv4 TCP packets. A remote attacker could send a crafted TCP ACK response and cause a denial of service via crash. This was only vulnerable in Ubuntu 7.10. (CVE-2007-5501)

Warren Togami discovered that the hrtimer subsystem did not properly check for large relative timeouts. A local user could exploit this and cause a denial of service via soft lockup. (CVE-2007-5966)

Venustech AD-LAB discovered a buffer overflow in the isdn net subsystem. This issue is exploitable by local users via crafted input to the isdn_ioctl function. (CVE-2007-6063)

It was discovered that the isdn subsystem did not properly check for NULL termination when performing ioctl handling. A local user could exploit this to cause a denial of service. (CVE-2007-6151)

Blake Frantz discovered that when a root process overwrote an existing core file, the resulting core file retained the previous core file's ownership. Local users could exploit this to gain access to sensitive information. (CVE-2007-6206)

Hugh Dickins discovered the when using the tmpfs filesystem, under rare circumstances, a kernel page may be improperly cleared. A local user may be able to exploit this and read sensitive kernel data or cause a denial of service via crash. (CVE-2007-6417)

Bill Roman discovered that the VFS subsystem did not properly check access modes. A local user may be able to gain removal privileges on directories. (CVE-2008-0001).

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.

Updated kernel packages that fix several security issues and a bug in the Red Hat Enterprise Linux 4 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 updated kernel packages fix the following security issues :

A flaw was found in the virtual filesystem (VFS). A local unprivileged 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 implementation of ptrace. A local unprivileged user could trigger this flaw and possibly cause a denial of service (system hang). (CVE-2007-5500, Important)

A flaw was found in the way the Red Hat Enterprise Linux 4 kernel handled page faults when a CPU used the NUMA method for accessing memory on Itanium architectures. A local unprivileged user could trigger this flaw and cause a denial of service (system panic).
(CVE-2007-4130, Important)

A possible NULL pointer dereference was found in the chrp_show_cpuinfo function when using the PowerPC architecture. This may have allowed a local unprivileged user to cause a denial of service (crash).
(CVE-2007-6694, Moderate)

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. This could potentially grant unauthorized access to sensitive information. (CVE-2007-6206, Moderate)

Two buffer overflow flaws were found in the Linux kernel ISDN subsystem. A local unprivileged user could use these flaws to cause a denial of service. (CVE-2007-6063, CVE-2007-6151, Moderate)

As well, these updated packages fix the following bug :

* when moving volumes that contain multiple segments, and a mirror segment is not the first in the mapping table, running the 'pvmove /dev/[device] /dev/[device]' command caused a kernel panic. A 'kernel:
Unable to handle kernel paging request at virtual address [address]' error was logged by syslog.

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

The minix filesystem did not properly validate certain filesystem values. If a local attacker could trick the system into attempting to mount a corrupted minix filesystem, the kernel could be made to hang for long periods of time, resulting in a denial of service.
(CVE-2006-6058)

Certain calculations in the hugetlb code were not correct. A local attacker could exploit this to cause a kernel panic, leading to a denial of service. (CVE-2007-4133)

Eric Sesterhenn and Victor Julien discovered that the hop-by-hop IPv6 extended header was not correctly validated. If a system was configured for IPv6, a remote attacker could send a specially crafted IPv6 packet and cause the kernel to panic, leading to a denial of service. This was only vulnerable in Ubuntu 7.04. (CVE-2007-4567)

Permissions were not correctly stored on JFFS2 ACLs. For systems using ACLs on JFFS2, a local attacker may gain access to private files.
(CVE-2007-4849)

Chris Evans discovered that the 802.11 network stack did not correctly handle certain QOS frames. A remote attacker on the local wireless network could send specially crafted packets that would panic the kernel, resulting in a denial of service. (CVE-2007-4997)

The Philips USB Webcam driver did not correctly handle disconnects. If a local attacker tricked another user into disconnecting a webcam unsafely, the kernel could hang or consume CPU resources, leading to a denial of service. (CVE-2007-5093)

Scott James Remnant discovered that the waitid function could be made to hang the system. A local attacker could execute a specially crafted program which would leave the system unresponsive, resulting in a denial of service. (CVE-2007-5500)

Ilpo Jarvinen discovered that it might be possible for the TCP stack to panic the kernel when receiving a crafted ACK response. Only Ubuntu 7.10 contained the vulnerable code, and it is believed not to have been exploitable. (CVE-2007-5501)

When mounting the same remote NFS share to separate local locations, the first location's mount options would apply to all subsequent mounts of the same NFS share. In some configurations, this could lead to incorrectly configured permissions, allowing local users to gain additional access to the mounted share.
(https://launchpad.net/bugs/164231)

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.

Update to Linux 2.6.22.14:
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22.10 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22.11 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22.12 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22.13 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22.14

CVE-2007-5501: The tcp_sacktag_write_queue function in net/ipv4/tcp_input.c in Linux kernel 2.6.24-rc2 and earlier allows remote attackers to cause a denial of service (crash) via crafted ACK responses that trigger a NULL pointer dereference.

CVE-2007-5500: The wait_task_stopped function in the Linux kernel before 2.6.23.8 checks a TASK_TRACED bit instead of an exit_state value, which allows local users to cause a denial of service (machine crash) via unspecified vectors.

Plus: Fix compat class device links in sysfs. Fix boot speed when virtualized on Intel VT processors. Fix ppc64 vDSO DWARF info for CR register (#350291)

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

Update to kernel 2.6.23.9-rc1:
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.2 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.3 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.4 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.5 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.6 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.7 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.8

CVE-2007-5501: The tcp_sacktag_write_queue function in net/ipv4/tcp_input.c in Linux kernel 2.6.24-rc2 and earlier allows remote attackers to cause a denial of service (crash) via crafted ACK responses that trigger a NULL pointer dereference.

CVE-2007-5500: The wait_task_stopped function in the Linux kernel before 2.6.23.8 checks a TASK_TRACED bit instead of an exit_state value, which allows local users to cause a denial of service (machine crash) via unspecified vectors.

Additional fixes: Major wireless updates. Fix oops in netfilter NAT module (#259501) libata: fix resume on some systems libata: fix pata_serverworks with some drive combinations Initial FireWire OHCI 1.0 Isochronous Receive support (#344851) Disable USB autosuspend by default. Fix oops in CIFS when mounting a filesystem a second time.
Restore platform module autoloading, e.g. pcspkr. Fix failure to boot on 486DX4 (and possibily other CPUs.)

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

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]

Update to kernel 2.6.23.9-rc1:
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.2 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.3 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.4 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.5 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.6 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.7 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.8 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.9

CVE-2007-5501: The tcp_sacktag_write_queue function in net/ipv4/tcp_input.c in Linux kernel 2.6.24-rc2 and earlier allows remote attackers to cause a denial of service (crash) via crafted ACK responses that trigger a NULL pointer dereference.

CVE-2007-5500: The wait_task_stopped function in the Linux kernel before 2.6.23.8 checks a TASK_TRACED bit instead of an exit_state value, which allows local users to cause a denial of service (machine crash) via unspecified vectors.

Additional fixes: Fix oops in selinux bitmap code (#394501) Fix oops in netfilter NAT module Major wireless driver updates. libata: fix resume for some devices libata: possible fix for bug #379971 libata:
fix broken sata_sis driver (#365331) Automatically load the Dell dcdbas driver (#248257) Initial FireWire OHCI 1.0 Isochronous Receive support (#344851) Touchpad support for Dell Vostro 1400 and Thinkpad R61 (#375471)

-63: Fix b43 Revision D error messages. Restore ability to add/remove virtual i/fs to mac80211 devices

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

The remote CentOS system is missing a security update which has been documented in Red Hat advisory RHSA-2008-0055.

ID	Name	Product	Family	Severity
67641	Oracle Linux 4 : kernel (ELSA-2008-0055)	Nessus	Oracle Linux Local Security Checks	high
60354	Scientific Linux Security Update : kernel on SL4.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	high
59128	SuSE 10 Security Update : Linux kernel (ZYPP Patch Number 5370)	Nessus	SuSE Local Security Checks	high
36924	Mandriva Linux Security Advisory : kernel (MDVSA-2008:044)	Nessus	Mandriva Local Security Checks	high
36852	Mandriva Linux Security Advisory : kernel (MDVSA-2008:112)	Nessus	Mandriva Local Security Checks	high
33432	SuSE 10 Security Update : Linux kernel (ZYPP Patch Number 5375)	Nessus	SuSE Local Security Checks	high
33252	openSUSE 10 Security Update : kernel (kernel-5336)	Nessus	SuSE Local Security Checks	high
31093	Ubuntu 6.06 LTS : linux-source-2.6.15 vulnerabilities (USN-578-1)	Nessus	Ubuntu Local Security Checks	high
30183	Ubuntu 6.10 / 7.04 / 7.10 : linux-source-2.6.17/20/22 vulnerabilities (USN-574-1)	Nessus	Ubuntu Local Security Checks	high
30154	CentOS 4 : kernel (CESA-2008:0055)	Nessus	CentOS Local Security Checks	high
30140	RHEL 4 : kernel (RHSA-2008:0055)	Nessus	Red Hat Local Security Checks	high
29740	Ubuntu 6.10 / 7.04 / 7.10 : linux-source-2.6.17/20/22 vulnerabilities (USN-558-1)	Nessus	Ubuntu Local Security Checks	high
29285	Fedora Core 6 : kernel-2.6.22.14-72.fc6 (2007-759)	Nessus	Fedora Local Security Checks	high
29264	Fedora 7 : kernel-2.6.23.8-34.fc7 (2007-3751)	Nessus	Fedora 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
29193	Fedora 8 : kernel-2.6.23.8-63.fc8 (2007-3837)	Nessus	Fedora Local Security Checks	high
801444	CentOS RHSA-2008-0055 Security Check	Log Correlation Engine	Generic	high

Detections

Analytics

CVE-2007-5500

medium

Tenable Plugins

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