CVE-2013-7421

Severity: low (CVSS 2.1 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2015-03-02 · updated 2026-06-17
Weakness: CWE-269

Description

The Crypto API in the Linux kernel before 3.18.5 allows local users to load arbitrary kernel modules via a bind system call for an AF_ALG socket with a module name in the salg_name field, a different vulnerability than CVE-2014-9644.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04, 14.10
Debian Linux: 7.0, 8.0
Linux kernel: before 3.18.5 — fixed in 3.18.5
Oracle Corporation Oracle Linux: 5, 6, 7

How to fix

Upgrade to a fixed version: Linux kernel 3.18.5. Check the vendor advisory for mitigations.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5d26a105b5a73e5635eae0629b42fa0a90e07b7b
http://rhn.redhat.com/errata/RHSA-2016-0068.html
http://www.debian.org/security/2015/dsa-3170
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5
http://www.mandriva.com/security/advisories?name=MDVSA-2015:057
http://www.mandriva.com/security/advisories?name=MDVSA-2015:058
http://www.openwall.com/lists/oss-security/2015/01/24/4
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.securityfocus.com/bid/72322
http://www.ubuntu.com/usn/USN-2513-1
http://www.ubuntu.com/usn/USN-2514-1

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