| Name | CVE-2015-8970 |
| Description | crypto/algif_skcipher.c in the Linux kernel before 4.4.2 does not verify that a setkey operation has been performed on an AF_ALG socket before an accept system call is processed, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted application that does not supply a key, related to the lrw_crypt function in crypto/lrw.c. |
| 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 | 4.19.249-2 | fixed |
| buster (security) | 4.19.304-1 | fixed |
| bullseye | 5.10.209-2 | fixed |
| bullseye (security) | 5.10.205-2 | fixed |
| bookworm | 6.1.76-1 | fixed |
| bookworm (security) | 6.1.85-1 | fixed |
| trixie | 6.6.15-2 | fixed |
| sid | 6.7.9-2 | 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 | 3.2.78-1 | | | |
| linux | source | jessie | 3.16.7-ckt25-1 | | | |
| linux | source | (unstable) | 4.4.2-1 | | | |
Notes
https://groups.google.com/forum/#!msg/syzkaller/frb2XrB5aWk/xCXzkIBcDAAJ
https://bugzilla.redhat.com/show_bug.cgi?id=1386286
Fixed by: https://git.kernel.org/linus/dd504589577d8e8e70f51f997ad487a4cb6c026f (v4.5-rc1)
Followed by a complete set of related upstrema commits. See kernel-sec
triage for details.
https://www.openwall.com/lists/oss-security/2016/11/03/6