CVE-2014-3145

Severity: medium (CVSS 4.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2014-05-11 · updated 2026-06-17
Weakness: CWE-125

Description

The BPF_S_ANC_NLATTR_NEST extension implementation in the sk_run_filter function in net/core/filter.c in the Linux kernel through 3.14.3 uses the reverse order in a certain subtraction, which allows local users to cause a denial of service (over-read and system crash) via crafted BPF instructions. NOTE: the affected code was moved to the __skb_get_nlattr_nest function before the vulnerability was announced.

Affected products

Canonical Ubuntu Linux: 10.04, 12.04, 13.10
Debian Linux: 7.0
Linux kernel: through 3.14.3
Oracle Corporation Oracle Linux: 6, 7

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=05ab8f2647e4221cbdb3856dd7d32bd5407316b3
http://linux.oracle.com/errata/ELSA-2014-3052.html
http://secunia.com/advisories/58990
http://secunia.com/advisories/59311
http://secunia.com/advisories/59597
http://secunia.com/advisories/60613
http://www.debian.org/security/2014/dsa-2949
http://www.openwall.com/lists/oss-security/2014/05/09/6
http://www.securityfocus.com/bid/67321
http://www.securitytracker.com/id/1038201
http://www.ubuntu.com/usn/USN-2251-1
http://www.ubuntu.com/usn/USN-2252-1

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