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CVE-2010-2946

Published: 29 September 2010

fs/jfs/xattr.c in the Linux kernel before 2.6.35.2 does not properly handle a certain legacy format for storage of extended attributes, which might allow local users by bypass intended xattr namespace restrictions via an "os2." substring at the beginning of a name.

From the Ubuntu Security Team

Sergey Vlasov discovered that JFS did not correctly handle certain extended attributes. A local attacker could bypass namespace access rules, leading to a loss of privacy.

Priority

Low

Status

Package Release Status
linux-source-2.6.15
Launchpad, Ubuntu, Debian
upstream Needs triage

dapper
Released (2.6.15-55.89)
hardy Does not exist

jaunty Does not exist

karmic Does not exist

lucid Does not exist

maverick Does not exist

Patches:



dapper: http://chinstrap.ubuntu.com/~sconklin/CVEs/CVE-2010-2946/patches/dapper/linux/0001-jfs-don-t-allow-os2-xattr-namespace-overlap-with-other.txt
linux
Launchpad, Ubuntu, Debian
upstream Needs triage

dapper Does not exist

hardy
Released (2.6.24-28.80)
jaunty
Released (2.6.28-19.66)
karmic
Released (2.6.31-22.67)
lucid Not vulnerable

maverick Not vulnerable

Patches:
hardy: http://chinstrap.ubuntu.com/~sconklin/CVEs/CVE-2010-2946/patches/hardy/linux/0001-jfs-don-t-allow-os2-xattr-namespace-overlap-with-other.txt
jaunty: http://chinstrap.ubuntu.com/~sconklin/CVEs/CVE-2010-2946/patches/jaunty/linux/0001-jfs-don-t-allow-os2-xattr-namespace-overlap-with-other.txt
karmic: http://chinstrap.ubuntu.com/~sconklin/CVEs/CVE-2010-2946/patches/karmic/linux/0001-jfs-don-t-allow-os2-xattr-namespace-overlap-with-other.txt

linux-fsl-imx51
Launchpad, Ubuntu, Debian
upstream Needs triage

dapper Does not exist

hardy Does not exist

karmic
Released (2.6.31-112.30)
lucid
Released (2.6.31-608.22)
maverick Does not exist

linux-ec2
Launchpad, Ubuntu, Debian
upstream Needs triage

dapper Does not exist

hardy Does not exist

karmic
Released (2.6.31-307.21)
lucid
Released (2.6.32-309.18)
maverick Ignored
(end of life)
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
upstream Needs triage

dapper Does not exist

hardy Does not exist

karmic Does not exist

lucid
Released (2.6.35-25.44~lucid1)
maverick Does not exist