CVE-2011-1833

Priority
Low
Description
Race condition in the ecryptfs_mount function in fs/ecryptfs/main.c in the
eCryptfs subsystem in the Linux kernel before 3.1 allows local users to
bypass intended file permissions via a mount.ecryptfs_private mount with a
mismatched uid.
Ubuntu-Description
Vasiliy Kulikov and Dan Rosenberg discovered that ecryptfs did not
correctly check the origin of mount points. A local attacker could exploit
this to trick the system into unmounting arbitrary mount points, leading to
a denial of service.
References
Bugs
Notes
mdeslaur> There are two parts to this fix, 1- kernel fix, 2- userspace fix
Package
Upstream:released (3.1~rc2)
Ubuntu 8.04 LTS (Hardy Heron):DNE
Ubuntu 10.04 LTS (Lucid Lynx):released (2.6.32-319.39)
Ubuntu 11.04 (Natty Narwhal):DNE
Ubuntu 11.10 (Oneiric Ocelot):DNE
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Package
Upstream:released (3.1~rc2)
Ubuntu 8.04 LTS (Hardy Heron):DNE
Ubuntu 10.04 LTS (Lucid Lynx):not-affected
Ubuntu 11.04 (Natty Narwhal):DNE
Ubuntu 11.10 (Oneiric Ocelot):DNE
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Package
Upstream:released (3.1~rc2)
Ubuntu 8.04 LTS (Hardy Heron):DNE
Ubuntu 10.04 LTS (Lucid Lynx):released (2.6.38-11.49~lucid1)
Ubuntu 11.04 (Natty Narwhal):DNE
Ubuntu 11.10 (Oneiric Ocelot):DNE
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Package
Upstream:released (3.1~rc2)
Ubuntu 8.04 LTS (Hardy Heron):DNE
Ubuntu 10.04 LTS (Lucid Lynx):released (2.6.32-219.37)
Ubuntu 11.04 (Natty Narwhal):DNE
Ubuntu 11.10 (Oneiric Ocelot):DNE
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Package
Upstream:released (3.1~rc2)
Ubuntu 8.04 LTS (Hardy Heron):DNE
Ubuntu 10.04 LTS (Lucid Lynx):released (2.6.35-30.60~lucid1)
Ubuntu 11.04 (Natty Narwhal):DNE
Ubuntu 11.10 (Oneiric Ocelot):DNE
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Package
Source: linux (LP Ubuntu Debian)
Upstream:released (3.1~rc2)
Ubuntu 8.04 LTS (Hardy Heron):not-affected
Ubuntu 10.04 LTS (Lucid Lynx):released (2.6.32-35.78)
Ubuntu 11.04 (Natty Narwhal):released (2.6.38-11.49)
Ubuntu 11.10 (Oneiric Ocelot):not-affected (3.0.0-8.11)
Ubuntu 12.04 LTS (Precise Pangolin):not-affected (3.0.0-8.11)
Patches:
Introduced by 237fead619984cc48818fe12ee0ceada3f55b012Fixed by 764355487ea220fdc2faf128d577d7f679b91f97
Package
Upstream:needs-triage
Ubuntu 8.04 LTS (Hardy Heron):not-affected (code not present)
Ubuntu 10.04 LTS (Lucid Lynx):released (83-0ubuntu3.2.10.04.1)
Ubuntu 11.04 (Natty Narwhal):released (87-0ubuntu1.1)
Ubuntu 11.10 (Oneiric Ocelot):released (89-0ubuntu2)
Ubuntu 12.04 LTS (Precise Pangolin):released (89-0ubuntu2)
Package
Upstream:released (3.1~rc2)
Ubuntu 8.04 LTS (Hardy Heron):DNE
Ubuntu 10.04 LTS (Lucid Lynx):DNE
Ubuntu 11.04 (Natty Narwhal):released (2.6.38-1209.15)
Ubuntu 11.10 (Oneiric Ocelot):not-affected (3.0.0-1201.4)
Ubuntu 12.04 LTS (Precise Pangolin):not-affected (3.0.0-1201.4)
Package
Upstream:released (3.1~rc2)
Ubuntu 8.04 LTS (Hardy Heron):DNE
Ubuntu 10.04 LTS (Lucid Lynx):released (2.6.31-610.27)
Ubuntu 11.04 (Natty Narwhal):DNE
Ubuntu 11.10 (Oneiric Ocelot):DNE
Ubuntu 12.04 LTS (Precise Pangolin):DNE
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Updated: 2012-10-04 18:14:31 UTC (commit 5863)