CVE-2011-4086

Priority
Medium
Description
The journal_unmap_buffer function in fs/jbd2/transaction.c in the Linux
kernel before 3.3.1 does not properly handle the _Delay and _Unwritten
buffer head states, which allows local users to cause a denial of service
(system crash) by leveraging the presence of an ext4 filesystem that was
mounted with a journal.
Ubuntu-Description
A flaw was found in the Linux's kernels ext4 file system when mounted with
a journal. A local, unprivileged user could exploit this flaw to cause a
denial of service.
References
Bugs
Notes
apw> This is sitting in Ted Ts'o's dev tree presumably waiting on the 3.4
apw> merge window, the issue is masked from v3.2 onwards by other commits.
apw> The commit itself is marked for stable and for now I suspect we should
apw> wait for it. We have no stable commit id as yet, see:
apw> jbd2: clear BH_Delay & BH_Unwritten in journal_unmap_buffer
apw> this has now appeared upstream (see below)
Package
Upstream:released (3.4~rc1)
Ubuntu 10.04 LTS (Lucid Lynx):DNE
Ubuntu 12.04 LTS (Precise Pangolin):not-affected (3.13.0-24.46~precise1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 14.10 (Utopic Unicorn):DNE
Package
Upstream:released (3.4~rc1)
Ubuntu 10.04 LTS (Lucid Lynx):DNE
Ubuntu 12.04 LTS (Precise Pangolin):not-affected (3.2.0-1602.5)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 14.10 (Utopic Unicorn):DNE
Package
Upstream:released (3.4~rc1)
Ubuntu 10.04 LTS (Lucid Lynx):released (2.6.32-345.48)
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 14.10 (Utopic Unicorn):DNE
Package
Upstream:released (3.4~rc1)
Ubuntu 10.04 LTS (Lucid Lynx):released (3.0.0-19.32~lucid1)
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 14.10 (Utopic Unicorn):DNE
Package
Upstream:released (3.4~rc1)
Ubuntu 10.04 LTS (Lucid Lynx):DNE
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):needs-triage
Ubuntu 14.10 (Utopic Unicorn):needs-triage
Package
Upstream:released (3.4~rc1)
Ubuntu 10.04 LTS (Lucid Lynx):DNE
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):not-affected (3.4.0-1.9)
Ubuntu 14.10 (Utopic Unicorn):not-affected (3.4.0-3.14)
Package
Upstream:released (3.4~rc1)
Ubuntu 10.04 LTS (Lucid Lynx):released (2.6.38-15.59~lucid1)
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 14.10 (Utopic Unicorn):DNE
Package
Upstream:DNE
Ubuntu 10.04 LTS (Lucid Lynx):DNE
Ubuntu 12.04 LTS (Precise Pangolin):not-affected (3.5.0-18.29~precise1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 14.10 (Utopic Unicorn):DNE
Patches:
Package
Upstream:released (3.4~rc1)
Ubuntu 10.04 LTS (Lucid Lynx):DNE
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):not-affected (3.4.0-1.3)
Ubuntu 14.10 (Utopic Unicorn):not-affected (3.4.0-3.10)
Package
Upstream:released (3.4~rc1)
Ubuntu 10.04 LTS (Lucid Lynx):ignored (reached end-of-life)
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 14.10 (Utopic Unicorn):DNE
Package
Upstream:released (3.4~rc1)
Ubuntu 10.04 LTS (Lucid Lynx):ignored (reached end-of-life)
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 14.10 (Utopic Unicorn):DNE
Package
Source: linux (LP Ubuntu Debian)
Upstream:released (3.4~rc1)
Ubuntu 10.04 LTS (Lucid Lynx):released (2.6.32-41.89)
Ubuntu 12.04 LTS (Precise Pangolin):not-affected (3.2.0-22.35)
Ubuntu 14.04 LTS (Trusty Tahr):not-affected (3.11.0-12.19)
Ubuntu 14.10 (Utopic Unicorn):not-affected (3.13.0-24.46)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2Fixed by 15291164b22a357cb211b618adfef4fa82fc0de3
Package
Upstream:released (3.4~rc1)
Ubuntu 10.04 LTS (Lucid Lynx):DNE
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):needs-triage
Ubuntu 14.10 (Utopic Unicorn):DNE
Package
Upstream:released (3.4~rc1)
Ubuntu 10.04 LTS (Lucid Lynx):DNE
Ubuntu 12.04 LTS (Precise Pangolin):not-affected (3.2.0-1412.15)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 14.10 (Utopic Unicorn):DNE
Package
Upstream:released (3.4~rc1)
Ubuntu 10.04 LTS (Lucid Lynx):DNE
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):not-affected (3.4.0-3.21)
Ubuntu 14.10 (Utopic Unicorn):not-affected (3.4.0-5.28)
Package
Upstream:released (3.4~rc1)
Ubuntu 10.04 LTS (Lucid Lynx):ignored (reached end-of-life)
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 14.10 (Utopic Unicorn):DNE
Package
Upstream:released (3.4~rc1)
Ubuntu 10.04 LTS (Lucid Lynx):DNE
Ubuntu 12.04 LTS (Precise Pangolin):not-affected (3.8.0-19.30~precise1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 14.10 (Utopic Unicorn):DNE
Package
Upstream:released (3.4~rc1)
Ubuntu 10.04 LTS (Lucid Lynx):DNE
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):not-affected (3.4.0-4.19)
Ubuntu 14.10 (Utopic Unicorn):not-affected (3.4.0-6.25)
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Updated: 2014-10-23 21:15:28 UTC (commit 8644)