CVE-2010-2066

Priority
Medium
Description
The mext_check_arguments function in fs/ext4/move_extent.c in the Linux
kernel before 2.6.35 allows local users to overwrite an append-only file
via a MOVE_EXT ioctl call that specifies this file as a donor.
Ubuntu-Description
Dan Rosenberg discovered that the MOVE_EXT ext4 ioctl did not correctly
check file permissions. A local attacker could overwrite append-only files,
leading to potential data loss.
References
Assigned-to
bradf
Package
Upstream:needs-triage
Ubuntu 8.04 LTS (Hardy Heron):DNE
Ubuntu 10.04 LTS (Lucid Lynx):released (2.6.31-608.22)
Ubuntu 11.04 (Natty Narwhal):DNE
Package
Upstream:needs-triage
Ubuntu 8.04 LTS (Hardy Heron):DNE
Ubuntu 10.04 LTS (Lucid Lynx):released (2.6.35-25.44~lucid1)
Ubuntu 11.04 (Natty Narwhal):DNE
Package
Upstream:needs-triage
Ubuntu 8.04 LTS (Hardy Heron):DNE
Ubuntu 10.04 LTS (Lucid Lynx):DNE
Ubuntu 11.04 (Natty Narwhal):DNE
Package
Upstream:needs-triage
Ubuntu 8.04 LTS (Hardy Heron):DNE
Ubuntu 10.04 LTS (Lucid Lynx):released (2.6.32-309.18)
Ubuntu 11.04 (Natty Narwhal):DNE
Package
Source: linux (LP Ubuntu Debian)
Upstream:released (2.6.35)
Ubuntu 8.04 LTS (Hardy Heron):not-affected (no ext4)
Ubuntu 10.04 LTS (Lucid Lynx):not-affected
Ubuntu 11.04 (Natty Narwhal):not-affected (2.6.35)
Patches:
upstream:http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=1f5a81e41f8b1a782c68d3843e9ec1bfaadf7d72
Karmic:http://chinstrap.ubuntu.com/~bradf/CVEs/CVE-2010-2066/patches/karmic/linux/0001-ext4-Make-sure-the-MOVE_EXT-ioctl-can-t-overwrite-appe.txt
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Updated: 2012-06-01 15:21:01 UTC (commit 5347)