Synopsis

Important: kernel security and bug fix update

Type/Severity

Security Advisory: Important

Topic

Updated kernel packages that fix two security issues and a bug are now
available for Red Hat Enterprise Linux 5.

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

Description

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

These updated packages fix the following security issues:

• a flaw was found in the SOCKOPS_WRAP macro in the Linux kernel. This
  macro did not initialize the sendpage operation in the proto_ops structure
  correctly. A local, unprivileged user could use this flaw to cause a local
  denial of service or escalate their privileges. (CVE-2009-2692, Important)
  
• a flaw was found in the udp_sendmsg() implementation in the Linux kernel
  when using the MSG_MORE flag on UDP sockets. A local, unprivileged user
  could use this flaw to cause a local denial of service or escalate their
  privileges. (CVE-2009-2698, Important)
  

Red Hat would like to thank Tavis Ormandy and Julien Tinnes of the Google
Security Team for responsibly reporting these flaws.

These updated packages also fix the following bug:

• in the dlm code, a socket was allocated in tcp_connect_to_sock(), but was
  not freed in the error exit path. This bug led to a memory leak and an
  unresponsive system. A reported case of this bug occurred after running
  "cman_tool kill -n [nodename]". (BZ#515432)
  

Users should upgrade to these updated packages, which contain backported
patches to correct these issues. The system must be rebooted for this
update to take effect.

Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Server - Extended Update Support 5.3 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support 5.3 ia64
• Red Hat Enterprise Linux Server - Extended Update Support 5.3 i386
• Red Hat Enterprise Linux Server - AUS 5.3 x86_64
• Red Hat Enterprise Linux Server - AUS 5.3 ia64
• Red Hat Enterprise Linux Server - AUS 5.3 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 5.3 s390x
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 5.3 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 515432 - dlm_send socket leak [rhel-5.3.z]
• BZ - 516949 - CVE-2009-2692 kernel: uninit op in SOCKOPS_WRAP() leads to privesc
• BZ - 518034 - CVE-2009-2698 kernel: udp socket NULL ptr dereference

CVEs

• CVE-2009-2698
• CVE-2009-2692

References

• http://www.redhat.com/security/updates/classification/#important

Red Hat Enterprise Linux Server 5

SRPM
x86_64
kernel-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: 9404199926eda02e1bdde1e2ebc09edae9518195c6d7926cf02431f578cd013d
kernel-debug-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: d12bebe57c1fbd4cc67414a05a7f5776768ed400de873b62bd7d5fec26819f73
kernel-debug-devel-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: 46f046ec818176f249ca59bc78a375a26e9b295e6c6fe544c0e5a444ccffb3f3
kernel-devel-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: 79771570cf17b7dbc4698b6856da9e0d85f1158ce9ce21c1382cbdf9112a0f8d
kernel-doc-2.6.18-128.7.1.el5.noarch.rpm	SHA-256: 8e1c76f3c74a1a8afdb439d0008d3d8eb572d4d58030b88169f79cb6e3a457f8
kernel-headers-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: be5d48ab76cd5d002a52470039bcd85a6de8e189876234adb6b4005563435662
kernel-xen-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: a5adb8708d81e7e3e5051bc13fc4651bdda8f1823b74dcf897553246bd74a38f
kernel-xen-devel-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: ee1a606f319038a5b3cc2dd42b955788989c25662eb522ec9d9240e280ad7d04
ia64
kernel-doc-2.6.18-128.7.1.el5.noarch.rpm	SHA-256: 8e1c76f3c74a1a8afdb439d0008d3d8eb572d4d58030b88169f79cb6e3a457f8
i386
kernel-doc-2.6.18-128.7.1.el5.noarch.rpm	SHA-256: 8e1c76f3c74a1a8afdb439d0008d3d8eb572d4d58030b88169f79cb6e3a457f8

Red Hat Enterprise Linux Workstation 5

SRPM
x86_64
kernel-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: 9404199926eda02e1bdde1e2ebc09edae9518195c6d7926cf02431f578cd013d
kernel-debug-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: d12bebe57c1fbd4cc67414a05a7f5776768ed400de873b62bd7d5fec26819f73
kernel-debug-devel-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: 46f046ec818176f249ca59bc78a375a26e9b295e6c6fe544c0e5a444ccffb3f3
kernel-devel-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: 79771570cf17b7dbc4698b6856da9e0d85f1158ce9ce21c1382cbdf9112a0f8d
kernel-doc-2.6.18-128.7.1.el5.noarch.rpm	SHA-256: 8e1c76f3c74a1a8afdb439d0008d3d8eb572d4d58030b88169f79cb6e3a457f8
kernel-headers-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: be5d48ab76cd5d002a52470039bcd85a6de8e189876234adb6b4005563435662
kernel-xen-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: a5adb8708d81e7e3e5051bc13fc4651bdda8f1823b74dcf897553246bd74a38f
kernel-xen-devel-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: ee1a606f319038a5b3cc2dd42b955788989c25662eb522ec9d9240e280ad7d04
i386
kernel-doc-2.6.18-128.7.1.el5.noarch.rpm	SHA-256: 8e1c76f3c74a1a8afdb439d0008d3d8eb572d4d58030b88169f79cb6e3a457f8

Red Hat Enterprise Linux Desktop 5

SRPM
x86_64
kernel-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: 9404199926eda02e1bdde1e2ebc09edae9518195c6d7926cf02431f578cd013d
kernel-debug-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: d12bebe57c1fbd4cc67414a05a7f5776768ed400de873b62bd7d5fec26819f73
kernel-debug-devel-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: 46f046ec818176f249ca59bc78a375a26e9b295e6c6fe544c0e5a444ccffb3f3
kernel-devel-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: 79771570cf17b7dbc4698b6856da9e0d85f1158ce9ce21c1382cbdf9112a0f8d
kernel-doc-2.6.18-128.7.1.el5.noarch.rpm	SHA-256: 8e1c76f3c74a1a8afdb439d0008d3d8eb572d4d58030b88169f79cb6e3a457f8
kernel-headers-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: be5d48ab76cd5d002a52470039bcd85a6de8e189876234adb6b4005563435662
kernel-xen-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: a5adb8708d81e7e3e5051bc13fc4651bdda8f1823b74dcf897553246bd74a38f
kernel-xen-devel-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: ee1a606f319038a5b3cc2dd42b955788989c25662eb522ec9d9240e280ad7d04
i386
kernel-doc-2.6.18-128.7.1.el5.noarch.rpm	SHA-256: 8e1c76f3c74a1a8afdb439d0008d3d8eb572d4d58030b88169f79cb6e3a457f8

Red Hat Enterprise Linux for IBM z Systems 5

SRPM
s390x
kernel-doc-2.6.18-128.7.1.el5.noarch.rpm	SHA-256: 8e1c76f3c74a1a8afdb439d0008d3d8eb572d4d58030b88169f79cb6e3a457f8

Red Hat Enterprise Linux for Power, big endian 5

SRPM
ppc
kernel-doc-2.6.18-128.7.1.el5.noarch.rpm	SHA-256: 8e1c76f3c74a1a8afdb439d0008d3d8eb572d4d58030b88169f79cb6e3a457f8

Red Hat Enterprise Linux Server from RHUI 5

SRPM
x86_64
kernel-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: 9404199926eda02e1bdde1e2ebc09edae9518195c6d7926cf02431f578cd013d
kernel-debug-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: d12bebe57c1fbd4cc67414a05a7f5776768ed400de873b62bd7d5fec26819f73
kernel-debug-devel-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: 46f046ec818176f249ca59bc78a375a26e9b295e6c6fe544c0e5a444ccffb3f3
kernel-devel-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: 79771570cf17b7dbc4698b6856da9e0d85f1158ce9ce21c1382cbdf9112a0f8d
kernel-doc-2.6.18-128.7.1.el5.noarch.rpm	SHA-256: 8e1c76f3c74a1a8afdb439d0008d3d8eb572d4d58030b88169f79cb6e3a457f8
kernel-headers-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: be5d48ab76cd5d002a52470039bcd85a6de8e189876234adb6b4005563435662
kernel-xen-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: a5adb8708d81e7e3e5051bc13fc4651bdda8f1823b74dcf897553246bd74a38f
kernel-xen-devel-2.6.18-128.7.1.el5.x86_64.rpm	SHA-256: ee1a606f319038a5b3cc2dd42b955788989c25662eb522ec9d9240e280ad7d04
i386
kernel-doc-2.6.18-128.7.1.el5.noarch.rpm	SHA-256: 8e1c76f3c74a1a8afdb439d0008d3d8eb572d4d58030b88169f79cb6e3a457f8