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USN-659-1: Linux kernel vulnerabilities

27 October 2008

Linux kernel vulnerabilities

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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 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)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 8.04
Ubuntu 7.10
Ubuntu 6.06

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

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.

Related notices

  • USN-679-1: linux-image-2.6.24-22-mckinley, linux-image-2.6.22-16-itanium, linux-image-2.6.22-16-rt, linux-image-2.6.15-53-amd64-xeon, linux-image-2.6.27-9-virtual, linux-image-2.6.22-16-virtual, linux-image-2.6.22-16-sparc64-smp, linux-image-2.6.24-22-lpiacompat, linux-backports-modules-2.6.15, linux-image-2.6.24-22-openvz, linux-image-2.6.24-22-itanium, linux-image-2.6.22-16-powerpc64-smp, linux-image-2.6.15-53-386, linux-image-2.6.15-53-server, linux-image-2.6.22-16-hppa32, linux-image-2.6.15-53-mckinley, linux-image-2.6.22-16-386, linux-image-2.6.24-22-virtual, linux-image-2.6.15-53-mckinley-smp, linux-image-2.6.15-53-itanium, linux-image-2.6.15-53-amd64-generic, linux-image-2.6.22-16-lpia, linux-image-2.6.15-53-powerpc64-smp, linux-image-2.6.22-16-lpiacompat, linux-source-2.6.15, linux-image-2.6.22-16-server, linux-image-2.6.24-22-generic, linux-image-2.6.15-53-sparc64, linux-source-2.6.22, linux-image-2.6.15-53-hppa32, linux-image-2.6.22-16-sparc64, linux-image-2.6.15-53-hppa32-smp, linux-image-2.6.22-16-xen, linux-image-2.6.15-53-k7, linux-image-2.6.15-53-powerpc-smp, linux-image-2.6.15-53-hppa64, linux-image-2.6.22-16-generic, linux-image-2.6.24-22-386, linux-image-2.6.24-22-hppa32, linux-image-2.6.24-22-xen, linux-restricted-modules, linux-image-2.6.24-22-rt, linux-image-2.6.22-16-ume, linux-restricted-modules-2.6.22, linux-image-2.6.24-22-powerpc-smp, linux-backports-modules-2.6.27, linux-image-2.6.22-16-powerpc, linux-image-2.6.22-16-hppa64, linux, linux-image-2.6.24-22-powerpc64-smp, linux-image-2.6.24-22-powerpc, linux-image-2.6.15-53-powerpc, linux-image-2.6.15-53-sparc64-smp, linux-image-2.6.22-16-mckinley, linux-image-2.6.15-53-amd64-k8, linux-image-2.6.15-53-itanium-smp, linux-image-2.6.24-22-lpia, linux-image-2.6.27-9-generic, linux-image-2.6.27-9-server, linux-image-2.6.15-53-server-bigiron, linux-image-2.6.15-53-hppa64-smp, linux-image-2.6.24-22-sparc64-smp, linux-image-2.6.22-16-powerpc-smp, linux-image-2.6.15-53-686, linux-image-2.6.24-22-sparc64, linux-backports-modules-2.6.22, linux-restricted-modules-2.6.15, linux-image-2.6.15-53-amd64-server, linux-image-2.6.24-22-server, linux-image-2.6.22-16-cell, linux-ubuntu-modules-2.6.24, linux-ubuntu-modules-2.6.22, linux-restricted-modules-2.6.24, linux-image-2.6.24-22-hppa64, linux-backports-modules-2.6.24