Skip to content

CVE-2014-3144

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.

View on NVD

Severity

N/A

EPSS

Probability of exploitation (next 30 days): 0.0006 (0.1%)
Percentile: 17.6%
EPSS: 2026-05-06

Affects

linux:linux_kerneldebian:debian_linuxcanonical:ubuntu_linuxoracle:linux

Technical description

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.

Published: 5/11/2014, 9:55:06 PM
Last modified: 5/6/2026, 10:30:45 PM

References

HomeEventsBlogResourcesTeam