| Name | CVE-2014-4611 |
| Description | Integer overflow in the LZ4 algorithm implementation, as used in Yann Collet LZ4 before r118 and in the lz4_uncompress function in lib/lz4/lz4_decompress.c in the Linux kernel before 3.15.2, on 32-bit platforms might allow context-dependent attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via a crafted Literal Run that would be improperly handled by programs not complying with an API limitation, a different vulnerability than CVE-2014-4715. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| linux (PTS) | jessie, jessie (lts) | 3.16.84-1 | fixed |
| stretch (security) | 4.9.320-2 | fixed |
| stretch (lts), stretch | 4.9.320-3 | fixed |
| buster (security), buster, buster (lts) | 4.19.316-1 | fixed |
| bullseye | 5.10.223-1 | fixed |
| bullseye (security) | 5.10.226-1 | fixed |
| bookworm | 6.1.115-1 | fixed |
| bookworm (security) | 6.1.112-1 | fixed |
| trixie | 6.11.7-1 | fixed |
| sid | 6.11.9-1 | fixed |
| lz4 (PTS) | jessie, jessie (lts) | 0.0~r122-2+deb8u1 | fixed |
| stretch (security), stretch (lts), stretch | 0.0~r131-2+deb9u1 | fixed |
| buster (security), buster, buster (lts) | 1.8.3-1+deb10u1 | fixed |
| bullseye | 1.9.3-2 | fixed |
| bookworm | 1.9.4-1 | fixed |
| sid, trixie | 1.9.4-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| linux | source | wheezy | (not affected) | | | |
| linux | source | (unstable) | 3.14.9-1 | unimportant | | |
| linux-2.6 | source | (unstable) | (not affected) | | | |
| lz4 | source | (unstable) | 0.0~r119-1 | | | |
Notes
[wheezy] - linux <not-affected> (LZ4 support introduced in 3.11)
- linux-2.6 <not-affected> (LZ4 support introduced in 3.11)
possible fix in https://lkml.org/lkml/2014/7/4/288
https://bugzilla.suse.com/show_bug.cgi?id=883949#c12
Not exploitable for lz* compressed kernel images: http://fastcompression.blogspot.fr/2014/06/debunking-lz4-20-years-old-bug-myth.html
for lz4: https://code.google.com/p/lz4/issues/detail?id=52 and https://code.google.com/p/lz4/source/detail?r=118