1. Ubuntu Security Notices
  2. USN-659-1

USN-659-1: Linux kernel vulnerabilities

Publication date

27 October 2008

Overview

Linux kernel vulnerabilities

Releases

Packages

Details

It was discovered that the direct-IO subsystem did not correctly validate
certain structures. A local attacker could exploit this to cause a system
crash, leading to a denial of service. (CVE-2007-6716)

It was discovered that the disabling of the ZERO_PAGE optimization could
lead to large memory consumption. A local attacker could exploit this to
allocate all available memory, leading to a denial of service.
(CVE-2008-2372)

It was discovered that the Datagram Congestion Control Protocol (DCCP) did
not correctly validate its arguments. If DCCP was in use, a remote attacker
could send specially crafted network traffic and cause a system crash,
leading to a denial of service. (CVE-2008-3276)

It was discovered that the SBNI WAN driver did not correctly check for the
NET_ADMIN capability. A malicious local root user...

It was discovered that the direct-IO subsystem did not correctly validate
certain structures. A local attacker could exploit this to cause a system
crash, leading to a denial of service. (CVE-2007-6716)

It was discovered that the disabling of the ZERO_PAGE optimization could
lead to large memory consumption. A local attacker could exploit this to
allocate all available memory, leading to a denial of service.
(CVE-2008-2372)

It was discovered that the Datagram Congestion Control Protocol (DCCP) did
not correctly validate its arguments. If DCCP was in use, a remote attacker
could send specially crafted network traffic and cause a system crash,
leading to a denial of service. (CVE-2008-3276)

It was discovered that the SBNI WAN driver did not correctly check for the
NET_ADMIN capability. A malicious local root user lacking CAP_NET_ADMIN
would be able to change the WAN device configuration, leading to a denial
of service. (CVE-2008-3525)

It was discovered that the Stream Control Transmission Protocol (SCTP) did
not correctly validate the key length in the SCTP_AUTH_KEY option. If SCTP
is in use, a remote attacker could send specially crafted network traffic
that would crash the system, leading to a denial of service.
(CVE-2008-3526)

It was discovered that the tmpfs implementation did not correctly handle
certain sequences of inode operations. A local attacker could exploit this
to crash the system, leading to a denial of service. (CVE-2008-3534)

It was discovered that the readv/writev functions did not correctly handle
certain sequences of file operations. A local attacker could exploit this
to crash the system, leading to a denial of service. (CVE-2008-3535)

It was discovered that SCTP did not correctly validate its userspace
arguments. A local attacker could call certain sctp_* functions with
malicious options and cause a system crash, leading to a denial of service.
(CVE-2008-3792, CVE-2008-4113, CVE-2008-4445)

It was discovered the the i915 video driver did not correctly validate
memory addresses. A local attacker could exploit this to remap memory
that could cause a system crash, leading to a denial of service.
(CVE-2008-3831)

Johann Dahm and David Richter discovered that NFSv4 did not correctly
handle certain file ACLs. If NFSv4 is in use, a local attacker could create
a malicious ACL that could cause a system crash, leading to a denial of
service. (CVE-2008-3915)

Update instructions

After a standard system upgrade you need to reboot your computer to effect the necessary changes.

Learn more about how to get the fixes.

ATTENTION: For systems without the hardy-updates pocket enabled, the 8.04 kernel update will include an unavoidable ABI change. The kernel update has been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. If you use linux-restricted-modules, you have to update that package as well to get modules which work with the new kernel version. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-386, linux-powerpc, linux-amd64-generic), a standard system upgrade will automatically perform this as well.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
8.04 hardy linux-image-2.6.24-21-powerpc –  2.6.24-21.43
linux-image-2.6.24-21-powerpc64-smp –  2.6.24-21.43
linux-image-2.6.24-21-sparc64 –  2.6.24-21.43
linux-image-2.6.24-21-server –  2.6.24-21.43
linux-image-2.6.24-21-openvz –  2.6.24-21.43
linux-image-2.6.24-21-itanium –  2.6.24-21.43
linux-image-2.6.24-21-lpiacompat –  2.6.24-21.43
linux-image-2.6.24-21-386 –  2.6.24-21.43
linux-image-2.6.24-21-generic –  2.6.24-21.43
linux-image-2.6.24-21-lpia –  2.6.24-21.43
linux-image-2.6.24-21-xen –  2.6.24-21.43
linux-image-2.6.24-21-hppa64 –  2.6.24-21.43
linux-image-2.6.24-21-powerpc-smp –  2.6.24-21.43
linux-image-2.6.24-21-mckinley –  2.6.24-21.43
linux-image-2.6.24-21-hppa32 –  2.6.24-21.43
linux-image-2.6.24-21-rt –  2.6.24-21.43
linux-image-2.6.24-21-virtual –  2.6.24-21.43
linux-image-2.6.24-21-sparc64-smp –  2.6.24-21.43
7.10 gutsy linux-image-2.6.22-15-mckinley –  2.6.22-15.59
linux-image-2.6.22-15-generic –  2.6.22-15.59
linux-image-2.6.22-15-hppa32 –  2.6.22-15.59
linux-image-2.6.22-15-xen –  2.6.22-15.59
linux-image-2.6.22-15-sparc64-smp –  2.6.22-15.59
linux-image-2.6.22-15-powerpc –  2.6.22-15.59
linux-image-2.6.22-15-itanium –  2.6.22-15.59
linux-image-2.6.22-15-lpiacompat –  2.6.22-15.59
linux-image-2.6.22-15-386 –  2.6.22-15.59
linux-image-2.6.22-15-powerpc-smp –  2.6.22-15.59
linux-image-2.6.22-15-lpia –  2.6.22-15.59
linux-image-2.6.22-15-sparc64 –  2.6.22-15.59
linux-image-2.6.22-15-rt –  2.6.22-15.59
linux-image-2.6.22-15-virtual –  2.6.22-15.59
linux-image-2.6.22-15-server –  2.6.22-15.59
linux-image-2.6.22-15-powerpc64-smp –  2.6.22-15.59
linux-image-2.6.22-15-hppa64 –  2.6.22-15.59
linux-image-2.6.22-15-cell –  2.6.22-15.59
linux-image-2.6.22-15-ume –  2.6.22-15.59
6.06 dapper linux-image-2.6.15-52-386 –  2.6.15-52.73
linux-image-2.6.15-52-mckinley –  2.6.15-52.73
linux-image-2.6.15-52-amd64-server –  2.6.15-52.73
linux-image-2.6.15-52-hppa32 –  2.6.15-52.73
linux-image-2.6.15-52-k7 –  2.6.15-52.73
linux-image-2.6.15-52-686 –  2.6.15-52.73
linux-image-2.6.15-52-amd64-k8 –  2.6.15-52.73
linux-image-2.6.15-52-server-bigiron –  2.6.15-52.73
linux-image-2.6.15-52-powerpc64-smp –  2.6.15-52.73
linux-image-2.6.15-52-sparc64-smp –  2.6.15-52.73
linux-image-2.6.15-52-itanium –  2.6.15-52.73
linux-image-2.6.15-52-server –  2.6.15-52.73
linux-image-2.6.15-52-hppa32-smp –  2.6.15-52.73
linux-image-2.6.15-52-amd64-xeon –  2.6.15-52.73
linux-image-2.6.15-52-mckinley-smp –  2.6.15-52.73
linux-image-2.6.15-52-hppa64-smp –  2.6.15-52.73
linux-image-2.6.15-52-hppa64 –  2.6.15-52.73
linux-image-2.6.15-52-powerpc –  2.6.15-52.73
linux-image-2.6.15-52-powerpc-smp –  2.6.15-52.73
linux-image-2.6.15-52-amd64-generic –  2.6.15-52.73
linux-image-2.6.15-52-itanium-smp –  2.6.15-52.73
linux-image-2.6.15-52-sparc64 –  2.6.15-52.73

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References

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