The Linux kernel before 2.6.11 on the Itanium IA64 platform has certain "ptrace corner cases" that allow local users to cause a denial of service (crash) via crafted syscalls, possibly related to MCA/INIT, a different vulnerability than CVE-2005-1761.

Updated kernel packages are now available as part of ongoing support and maintenance of Red Hat Enterprise Linux version 4. This is the first regular update.

[Updated 9 August 2005] The advisory text has been updated to show that this update also contained fixes for the security issues named CVE-2005-0209 and CVE-2005-0937. No changes have been made to the packages associated with this advisory.

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

This is the first regular kernel update to Red Hat Enterprise Linux 4.

A flaw affecting the auditing code was discovered. On Itanium architectures a local user could use this flaw to cause a denial of service (crash). This issue is rated as having important security impact (CVE-2005-0136).

A flaw was discovered in the servicing of a raw device ioctl. A local user who has access to raw devices could use this flaw to write to kernel memory and cause a denial of service or potentially gain privileges. This issue is rated as having moderate security impact (CVE-2005-1264).

A flaw in fragment forwarding was discovered that affected the netfilter subsystem for certain network interface cards. A remote attacker could send a set of bad fragments and cause a denial of service (system crash). Acenic and SunGEM network interfaces were the only adapters affected, which are in widespread use. (CVE-2005-0209)

A flaw in the futex functions was discovered affecting the Linux 2.6 kernel. A local user could use this flaw to cause a denial of service (system crash). (CVE-2005-0937)

New features introduced by this update include: - Fixed TCP BIC congestion handling. - Diskdump support for more controllers (megaraid, SATA) - Device mapper multipath support - AMD64 dual core support. - Intel ICH7 hardware support.

There were many bug fixes in various parts of the kernel. The ongoing effort to resolve these problems has resulted in a marked improvement in the reliability and scalability of Red Hat Enterprise Linux 4.

The following device drivers have been upgraded to new versions:
ata_piix -------- 1.03 bonding --------- 2.6.1 e1000 ----------- 5.6.10.1-k2-NAPI e100 ------------ 3.3.6-k2-NAPI ibmveth --------- 1.03 libata ---------- 1.02 to 1.10 lpfc ------------ 0:8.0.16 to 0:8.0.16.6_x2 megaraid_mbox --- 2.20.4.0 to 2.20.4.5 megaraid_mm ----- 2.20.2.0-rh1 to 2.20.2.5 sata_nv --------- 0.03 to 0.6 sata_promise
---- 1.00 to 1.01 sata_sil -------- 0.8 sata_sis -------- 0.5 sata_svw
-------- 1.05 sata_sx4 -------- 0.7 sata_via -------- 1.0 sata_vsc
-------- 1.0 tg3 ------------- 3.22-rh ipw2100 --------- 1.0.3 ipw2200
--------- 1.0.0

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

Updated kernel packages are now available as part of ongoing support and maintenance of Red Hat Enterprise Linux version 3. This is the sixth regular update.

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.

This is the sixth regular kernel update to Red Hat Enterprise Linux 3.

New features introduced by this update include :

  - diskdump support on HP Smart Array devices -     netconsole/netdump support over bonded interfaces - new     chipset and device support via PCI table updates -     support for new 'oom-kill' and 'kscand_work_percent'     sysctls - support for dual core processors and ACPI     Power Management timers on AMD64 and Intel EM64T systems

There were many bug fixes in various parts of the kernel. The ongoing effort to resolve these problems has resulted in a marked improvement in the reliability and scalability of Red Hat Enterprise Linux 3.

There were numerous driver updates and security fixes (elaborated below). Other key areas affected by fixes in this update include kswapd, inode handling, the SATA subsystem, diskdump handling, ptrace() syscall support, and signal handling.

The following device drivers have been upgraded to new versions :

3w-9xxx ---- 2.24.03.008RH cciss ------ 2.4.58.RH1 e100 ------- 3.4.8-k2 e1000 ------ 6.0.54-k2 emulex ----- 7.3.2 fusion ----- 2.06.16i.01 iscsi ------ 3.6.2.1 ipmi ------- 35.4 lpfcdfc ---- 1.2.1 qlogic ----- 7.05.00-RH1 tg3 -------- 3.27RH

The following security bugs were fixed in this update :

  - a flaw in syscall argument checking on Itanium systems     that allowed a local user to cause a denial of service     (crash) (CVE-2005-0136)

  - a flaw in stack expansion that allowed a local user of     mlockall() to cause a denial of service (memory     exhaustion) (CVE-2005-0179)

  - a small memory leak in network packet defragmenting that     allowed a remote user to cause a denial of service     (memory exhaustion) on systems using netfilter     (CVE-2005-0210)

  - flaws in ptrace() syscall handling on AMD64 and Intel     EM64T systems that allowed a local user to cause a     denial of service (crash) (CVE-2005-0756, CVE-2005-1762,     CVE-2005-2553)

  - flaws in ISO-9660 file system handling that allowed the     mounting of an invalid image on a CD-ROM to cause a     denial of service (crash) or potentially execute     arbitrary code (CVE-2005-0815)

  - a flaw in ptrace() syscall handling on Itanium systems     that allowed a local user to cause a denial of service     (crash) (CVE-2005-1761)

  - a flaw in the alternate stack switching on AMD64 and     Intel EM64T systems that allowed a local user to cause a     denial of service (crash) (CVE-2005-1767)

  - race conditions in the ia32-compat support for exec()     syscalls on AMD64, Intel EM64T, and Itanium systems that     could allow a local user to cause a denial of service     (crash) (CVE-2005-1768)

  - flaws in IPSEC network handling that allowed a local     user to cause a denial of service or potentially gain     privileges (CVE-2005-2456, CVE-2005-2555)

  - a flaw in sendmsg() syscall handling on 64-bit systems     that allowed a local user to cause a denial of service     or potentially gain privileges (CVE-2005-2490)

  - flaws in unsupported modules that allowed     denial-of-service attacks (crashes) or local privilege     escalations on systems using the drm, coda, or moxa     modules (CVE-2004-1056, CVE-2005-0124, CVE-2005-0504)

  - potential leaks of kernel data from jfs and ext2 file     system handling (CVE-2004-0181, CVE-2005-0400)

Note: The kernel-unsupported package contains various drivers and modules that are unsupported and therefore might contain security problems that have not been addressed.

All Red Hat Enterprise Linux 3 users are advised to upgrade their kernels to the packages associated with their machine architectures and configurations as listed in this erratum.

The remote Redhat Enterprise Linux 4 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2005:420 advisory.

  - security flaw (CVE-2005-0136, CVE-2005-0209, CVE-2005-0937, CVE-2005-1264, CVE-2005-3107)

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

The remote CentOS system is missing a security update which has been documented in Red Hat advisory RHSA-2005-663.

The remote CentOS system is missing a security update which has been documented in Red Hat advisory RHSA-2005-420.

ID	Name	Product	Family	Severity
21937	CentOS 4 : kernel (CESA-2005:420)	Nessus	CentOS Local Security Checks	high
21849	CentOS 3 : kernel (CESA-2005:663)	Nessus	CentOS Local Security Checks	medium
19832	RHEL 3 : kernel (RHSA-2005:663)	Nessus	Red Hat Local Security Checks	medium
18444	RHEL 4 : Updated kernel packages available for Red Hat Enterprise Linux 4 Update 1 (Important) (RHSA-2005:420)	Nessus	Red Hat Local Security Checks	medium
801410	CentOS RHSA-2005-663 Security Check	Log Correlation Engine	Generic	high
801407	CentOS RHSA-2005-420 Security Check	Log Correlation Engine	Generic	high

Detections

Analytics

CVE-2005-0136

medium

Tenable Plugins

high

medium

medium

medium

high

high