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.

Several local 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-2007-6694     Cyrill Gorcunov reported a NULL pointer dereference in     code specific to the CHRP PowerPC platforms. Local users     could exploit this issue to achieve a Denial of Service     (DoS).

  - CVE-2008-0007     Nick Piggin of SuSE discovered a number of issues in     subsystems which register a fault handler for memory     mapped areas. This issue can be exploited by local users     to achieve a Denial of Service (DoS) and possibly     execute arbitrary code.

  - CVE-2008-1294     David Peer discovered that users could escape     administrator imposed cpu time limitations (RLIMIT_CPU)     by setting a limit of 0.

  - CVE-2008-1375     Alexander Viro discovered a race condition in the     directory notification subsystem that allows local users     to cause a Denial of Service (oops) and possibly result     in an escalation of privileges.

From Red Hat Security Advisory 2008:0237 :

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 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 packages fix the following security issues :

* the absence of a protection mechanism when attempting to access a critical section of code has been found in the Linux kernel open file descriptors control mechanism, fcntl. This could allow a local unprivileged user to simultaneously execute code, which would otherwise be protected against parallel execution. As well, a race condition when handling locks in the Linux kernel fcntl functionality, may have allowed a process belonging to a local unprivileged user to gain re-ordered access to the descriptor table. (CVE-2008-1669, Important)

* on AMD64 architectures, the possibility of a kernel crash was discovered by testing the Linux kernel process-trace ability. This could allow a local unprivileged user to cause a denial of service (kernel crash). (CVE-2008-1615, Important)

* the absence of a protection mechanism when attempting to access a critical section of code, as well as a race condition, have been found in the Linux kernel file system event notifier, dnotify. This could allow a local unprivileged user to get inconsistent data, or to send arbitrary signals to arbitrary system processes. (CVE-2008-1375, Important)

Red Hat would like to thank Nick Piggin for responsibly disclosing the following issue :

* when accessing kernel memory locations, certain Linux kernel drivers registering a fault handler did not perform required range checks. A local unprivileged user could use this flaw to gain read or write access to arbitrary kernel memory, or possibly cause a kernel crash.
(CVE-2008-0007, Important)

* the possibility of a kernel crash was found in the Linux kernel IPsec protocol implementation, due to improper handling of fragmented ESP packets. When an attacker controlling an intermediate router fragmented these packets into very small pieces, it would cause a kernel crash on the receiving node during packet reassembly.
(CVE-2007-6282, Important)

* a flaw in the MOXA serial driver could allow a local unprivileged user to perform privileged operations, such as replacing firmware.
(CVE-2005-0504, Important)

As well, these updated packages fix the following bugs :

* multiple buffer overflows in the neofb driver have been resolved. It was not possible for an unprivileged user to exploit these issues, and as such, they have not been handled as security issues.

* a kernel panic, due to inconsistent detection of AGP aperture size, has been resolved.

* a race condition in UNIX domain sockets may have caused 'recv()' to return zero. In clustered configurations, this may have caused unexpected failovers.

* to prevent link storms, network link carrier events were delayed by up to one second, causing unnecessary packet loss. Now, link carrier events are scheduled immediately.

* a client-side race on blocking locks caused large time delays on NFS file systems.

* in certain situations, the libATA sata_nv driver may have sent commands with duplicate tags, which were rejected by SATA devices.
This may have caused infinite reboots.

* running the 'service network restart' command may have caused networking to fail.

* a bug in NFS caused cached information about directories to be stored for too long, causing wrong attributes to be read.

* on systems with a large highmem/lowmem ratio, NFS write performance may have been very slow when using small files.

* a bug, which caused network hangs when the system clock was wrapped around zero, has been resolved.

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

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)

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)

The tehuti network driver did not correctly handle certain IO functions. A local attacker could perform malicious requests to the driver, potentially accessing kernel memory, leading to privilege escalation or access to private system information. (CVE-2008-1675).

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.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
33432	SuSE 10 Security Update : Linux kernel (ZYPP Patch Number 5375)	Nessus	SuSE Local Security Checks	2008/7/8	2021/1/14	high
59128	SuSE 10 Security Update : Linux kernel (ZYPP Patch Number 5370)	Nessus	SuSE Local Security Checks	2012/5/17	2021/1/14	high
32127	Debian DSA-1565-1 : linux-2.6 - several vulnerabilities	Nessus	Debian Local Security Checks	2008/5/2	2021/1/4	high
67685	Oracle Linux 4 : kernel (ELSA-2008-0237)	Nessus	Oracle Linux Local Security Checks	2013/7/12	2021/8/24	high
33093	Ubuntu 8.04 LTS : linux vulnerabilities (USN-614-1)	Nessus	Ubuntu Local Security Checks	2008/6/4	2021/1/19	high

检测

插件搜索

high

high

high

high

high