CVE-2006-0039

Severity: medium (CVSS 4.7 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2006-05-19 · updated 2026-06-16
Weakness: CWE-362

Description

Race condition in the do_add_counters function in netfilter for Linux kernel 2.6.16 allows local users with CAP_NET_ADMIN capabilities to read kernel memory by triggering the race condition in a way that produces a size value that is inconsistent with allocated memory, which leads to a buffer over-read in IPT_ENTRY_ITERATE.

Affected products

Linux kernel: 2.6.16

References

http://bugs.gentoo.org/show_bug.cgi?id=133465
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.17
http://secunia.com/advisories/20185
http://secunia.com/advisories/20671
http://secunia.com/advisories/20914
http://secunia.com/advisories/20991
http://secunia.com/advisories/21476
http://secunia.com/advisories/22292
http://secunia.com/advisories/22945
http://support.avaya.com/elmodocs2/security/ASA-2006-249.htm
http://www.debian.org/security/2006/dsa-1097
http://www.debian.org/security/2006/dsa-1103

Get alerted when CVE-2006-0039 or the next vulnerability affects your stack