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CVE-2010-2071

Published: 16 June 2010

The btrfs_xattr_set_acl function in fs/btrfs/acl.c in btrfs in the Linux kernel 2.6.34 and earlier does not check file ownership before setting an ACL, which allows local users to bypass file permissions by setting arbitrary ACLs, as demonstrated using setfacl.

Notes

AuthorNote
smb
Btrfs did not appear before Karmic

Priority

Medium

Status

Package Release Status
linux-source-2.6.15
Launchpad, Ubuntu, Debian
upstream
Released (2.6.35~rc3)
dapper Not vulnerable

hardy Does not exist

jaunty Does not exist

karmic Does not exist

lucid Does not exist

linux
Launchpad, Ubuntu, Debian
upstream
Released (2.6.35~rc3)
dapper Does not exist

hardy Not vulnerable

jaunty Not vulnerable

karmic
Released (2.6.31-22.61)
lucid
Released (2.6.32-24.39)
Patches:
upstream: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2f26afba46f0ebf155cf9be746496a0304a5b7cf
karmic: http://chinstrap.ubuntu.com/~smb/CVEs/CVE-2010-2071/patches/karmic/linux/0001-Btrfs-should-add-a-permission-check-for-setfacl.txt
lucid: http://chinstrap.ubuntu.com/~smb/CVEs/CVE-2010-2071/patches/lucid/linux/0001-Btrfs-should-add-a-permission-check-for-setfacl.txt