USN-966-1: Linux kernel vulnerabilities

Publication date

4 August 2010

Overview

Multiple security flaws.


Packages

Details

Junjiro R. Okajima discovered that knfsd did not correctly handle
strict overcommit. A local attacker could exploit this to crash knfsd,
leading to a denial of service. (Only Ubuntu 6.06 LTS and 8.04 LTS were
affected.) (CVE-2008-7256, CVE-2010-1643)

Chris Guo, Jukka Taimisto, and Olli Jarva discovered that SCTP did
not correctly handle invalid parameters. A remote attacker could send
specially crafted traffic that could crash the system, leading to a
denial of service. (CVE-2010-1173)

Mario Mikocevic discovered that GFS2 did not correctly handle certain
quota structures. A local attacker could exploit this to crash the
system, leading to a denial of service. (Ubuntu 6.06 LTS was not
affected.) (CVE-2010-1436)

Toshiyuki Okajima discovered that the kernel keyring did not...

Junjiro R. Okajima discovered that knfsd did not correctly handle
strict overcommit. A local attacker could exploit this to crash knfsd,
leading to a denial of service. (Only Ubuntu 6.06 LTS and 8.04 LTS were
affected.) (CVE-2008-7256, CVE-2010-1643)

Chris Guo, Jukka Taimisto, and Olli Jarva discovered that SCTP did
not correctly handle invalid parameters. A remote attacker could send
specially crafted traffic that could crash the system, leading to a
denial of service. (CVE-2010-1173)

Mario Mikocevic discovered that GFS2 did not correctly handle certain
quota structures. A local attacker could exploit this to crash the
system, leading to a denial of service. (Ubuntu 6.06 LTS was not
affected.) (CVE-2010-1436)

Toshiyuki Okajima discovered that the kernel keyring did not correctly
handle dead keyrings. A local attacker could exploit this to crash the
system, leading to a denial of service. (CVE-2010-1437)

Brad Spengler discovered that Sparc did not correctly implement
non-executable stacks. This made userspace applications vulnerable to
exploits that would have been otherwise blocked due to non-executable
memory protections. (Ubuntu 10.04 LTS was not affected.) (CVE-2010-1451)

Dan Rosenberg discovered that the btrfs clone function did not correctly
validate permissions. A local attacker could exploit this to read
sensitive information, leading to a loss of privacy. (Only Ubuntu 9.10
was affected.) (CVE-2010-1636)

Dan Rosenberg discovered that GFS2 set_flags function did not correctly
validate permissions. A local attacker could exploit this to gain
access to files, leading to a loss of privacy and potential privilege
escalation. (Ubuntu 6.06 LTS was not affected.) (CVE-2010-1641)

Shi Weihua discovered that btrfs xattr_set_acl function did not
correctly validate permissions. A local attacker could exploit
this to gain access to files, leading to a loss of privacy and
potential privilege escalation. (Only Ubuntu 9.10 and 10.04 LTS were
affected.) (CVE-2010-2071)

Andre Osterhues discovered that eCryptfs did not correctly calculate
hash values. A local attacker with certain uids could exploit this to
crash the system or potentially gain root privileges. (Ubuntu 6.06 LTS
was not affected.) (CVE-2010-2492)


Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
9.10 karmic linux-image-2.6.31-22-server –  2.6.31-22.61
linux-image-2.6.31-22-ia64 –  2.6.31-22.61
linux-image-2.6.31-307-ec2 –  2.6.31-307.16
linux-image-2.6.31-22-generic-pae –  2.6.31-22.61
linux-image-2.6.31-22-386 –  2.6.31-22.61
linux-image-2.6.31-22-powerpc –  2.6.31-22.61
linux-image-2.6.31-22-sparc64 –  2.6.31-22.61
linux-image-2.6.31-22-sparc64-smp –  2.6.31-22.61
linux-image-2.6.31-22-powerpc-smp –  2.6.31-22.61
linux-image-2.6.31-22-virtual –  2.6.31-22.61
linux-image-2.6.31-214-dove –  2.6.31-214.29
linux-image-2.6.31-22-powerpc64-smp –  2.6.31-22.61
linux-image-2.6.31-22-generic –  2.6.31-22.61
linux-image-2.6.31-22-lpia –  2.6.31-22.61
linux-image-2.6.31-214-dove-z0 –  2.6.31-214.29
9.04 jaunty linux-image-2.6.28-19-lpia –  2.6.28-19.62
linux-image-2.6.28-19-versatile –  2.6.28-19.62
linux-image-2.6.28-19-imx51 –  2.6.28-19.62
linux-image-2.6.28-19-generic –  2.6.28-19.62
linux-image-2.6.28-19-server –  2.6.28-19.62
linux-image-2.6.28-19-ixp4xx –  2.6.28-19.62
linux-image-2.6.28-19-virtual –  2.6.28-19.62
linux-image-2.6.28-19-iop32x –  2.6.28-19.62
8.04 hardy linux-image-2.6.24-28-powerpc64-smp –  2.6.24-28.73
linux-image-2.6.24-28-hppa32 –  2.6.24-28.73
linux-image-2.6.24-28-generic –  2.6.24-28.73
linux-image-2.6.24-28-powerpc –  2.6.24-28.73
linux-image-2.6.24-28-sparc64-smp –  2.6.24-28.73
linux-image-2.6.24-28-itanium –  2.6.24-28.73
linux-image-2.6.24-28-openvz –  2.6.24-28.73
linux-image-2.6.24-28-virtual –  2.6.24-28.73
linux-image-2.6.24-28-rt –  2.6.24-28.73
linux-image-2.6.24-28-lpia –  2.6.24-28.73
linux-image-2.6.24-28-hppa64 –  2.6.24-28.73
linux-image-2.6.24-28-mckinley –  2.6.24-28.73
linux-image-2.6.24-28-server –  2.6.24-28.73
linux-image-2.6.24-28-powerpc-smp –  2.6.24-28.73
linux-image-2.6.24-28-386 –  2.6.24-28.73
linux-image-2.6.24-28-lpiacompat –  2.6.24-28.73
linux-image-2.6.24-28-sparc64 –  2.6.24-28.73
linux-image-2.6.24-28-xen –  2.6.24-28.73
6.06 dapper linux-image-2.6.15-55-hppa64 –  2.6.15-55.86
linux-image-2.6.15-55-mckinley –  2.6.15-55.86
linux-image-2.6.15-55-powerpc-smp –  2.6.15-55.86
linux-image-2.6.15-55-hppa32-smp –  2.6.15-55.86
linux-image-2.6.15-55-686 –  2.6.15-55.86
linux-image-2.6.15-55-amd64-k8 –  2.6.15-55.86
linux-image-2.6.15-55-amd64-server –  2.6.15-55.86
linux-image-2.6.15-55-386 –  2.6.15-55.86
linux-image-2.6.15-55-sparc64-smp –  2.6.15-55.86
linux-image-2.6.15-55-k7 –  2.6.15-55.86
linux-image-2.6.15-55-sparc64 –  2.6.15-55.86
linux-image-2.6.15-55-server –  2.6.15-55.86
linux-image-2.6.15-55-powerpc64-smp –  2.6.15-55.86
linux-image-2.6.15-55-hppa32 –  2.6.15-55.86
linux-image-2.6.15-55-mckinley-smp –  2.6.15-55.86
linux-image-2.6.15-55-server-bigiron –  2.6.15-55.86
linux-image-2.6.15-55-itanium-smp –  2.6.15-55.86
linux-image-2.6.15-55-amd64-xeon –  2.6.15-55.86
linux-image-2.6.15-55-powerpc –  2.6.15-55.86
linux-image-2.6.15-55-amd64-generic –  2.6.15-55.86
linux-image-2.6.15-55-hppa64-smp –  2.6.15-55.86
linux-image-2.6.15-55-itanium –  2.6.15-55.86
10.04 lucid linux-image-2.6.33-502-omap –  2.6.33-502.9
linux-image-2.6.32-308-ec2 –  2.6.32-308.14
linux-image-2.6.32-207-dove –  2.6.32-207.21
linux-image-2.6.32-24-386 –  2.6.32-24.39
linux-image-2.6.32-24-powerpc –  2.6.32-24.39
linux-image-2.6.32-24-powerpc64-smp –  2.6.32-24.39
linux-image-2.6.32-24-generic-pae –  2.6.32-24.39
linux-image-2.6.32-24-versatile –  2.6.32-24.39
linux-image-2.6.32-24-generic –  2.6.32-24.39
linux-image-2.6.32-24-virtual –  2.6.32-24.39
linux-image-2.6.32-24-server –  2.6.32-24.39
linux-image-2.6.32-24-ia64 –  2.6.32-24.39
linux-image-2.6.32-24-sparc64-smp –  2.6.32-24.39
linux-image-2.6.32-24-preempt –  2.6.32-24.39
linux-image-2.6.32-24-powerpc-smp –  2.6.32-24.39
linux-image-2.6.32-24-sparc64 –  2.6.32-24.39
linux-image-2.6.32-24-lpia –  2.6.32-24.39

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