| Name | CVE-2016-2550 |
| Description | The Linux kernel before 4.5 allows local users to bypass file-descriptor limits and cause a denial of service (memory consumption) by leveraging incorrect tracking of descriptor ownership and sending each descriptor over a UNIX socket before closing it. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-4312. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more) |
| References | DSA-3503-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | buster | 4.19.249-2 | fixed |
| buster (security) | 4.19.269-1 | fixed | |
| bullseye | 5.10.158-2 | fixed | |
| bullseye (security) | 5.10.162-1 | fixed | |
| bookworm, sid | 6.1.20-1 | 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 | 3.2.73-2+deb7u3 | DSA-3503-1 | ||
| linux | source | jessie | 3.16.7-ckt20-1+deb8u4 | DSA-3503-1 | ||
| linux | source | (unstable) | 4.4.4-1 | |||
| linux-2.6 | source | (unstable) | (unfixed) |
Upstream fix: https://git.kernel.org/linus/415e3d3e90ce9e18727e8843ae343eda5a58fad6 (v4.5-rc4)
Introduced by: https://git.kernel.org/linus/712f4aad406bb1ed67f3f98d04c044191f0ff593 (v4.5-rc1)
Technically wheezy-security and squeeze-lts are not affected by this CVE since the fix for
addressing CVE-2013-4312 was not applied.