| Name | CVE-2015-6526 |
| Description | The perf_callchain_user_64 function in arch/powerpc/perf/callchain.c in the Linux kernel before 4.0.2 on ppc64 platforms allows local users to cause a denial of service (infinite loop) via a deep 64-bit userspace backtrace. |
| 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) | bullseye | 5.10.223-1 | fixed |
| bullseye (security) | 5.10.226-1 | fixed |
| bookworm | 6.1.115-1 | fixed |
| bookworm (security) | 6.1.119-1 | fixed |
| trixie | 6.12.5-1 | fixed |
| sid | 6.12.6-1 | 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 | 3.2.71-1 | | | |
| linux | source | jessie | 3.16.7-ckt11-1 | | | |
| linux | source | (unstable) | 4.1.3-1 | | | |
| linux-2.6 | source | squeeze | (not affected) | | | |
| linux-2.6 | source | (unstable) | (unfixed) | | | |
Notes
[squeeze] - linux-2.6 <not-affected> (powerpc not supported in Squeeze LTS)
https://www.openwall.com/lists/oss-security/2015/08/18/4
Fixed by: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9a5cbce421a283e6aea3c4007f141735bf9da8c3 (v4.1-rc1)