CVE-2014-3144: Canonical Ubuntu Linux

Medium severity, CVSS 4.9. EPSS: 0.6% chance of exploitation in the next 30 days.

The (1) BPF_S_ANC_NLATTR and (2) BPF_S_ANC_NLATTR_NEST extension implementations in the sk_run_filter function in net/core/filter.c in the Linux kernel through 3.14.3 do not check whether a certain length value is sufficiently large, which allows local users to cause a denial of service (integer underflow and system crash) via crafted BPF instructions. NOTE: the affected code was moved to the __skb_get_nlattr and __skb_get_nlattr_nest functions before the vulnerability was announced.

Affected products

• Canonical Ubuntu Linux: version 10.04 only; version 12.04 only; version 13.10 only
• Debian Debian Linux: version 7.0 only
• Linux Linux Kernel: up to and including 3.14.3
• Oracle Linux: version 6 only; version 7 only

Published 2014-05-11. Last modified 2026-06-17.