CVE-2005-3806

Severity: medium (CVSS 6.6 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2005-11-25 · updated 2026-06-16
Weakness: CWE-399

Description

The IPv6 flow label handling code (ip6_flowlabel.c) in Linux kernels 2.4 up to 2.4.32 and 2.6 before 2.6.14 modifies the wrong variable in certain circumstances, which allows local users to corrupt kernel memory or cause a denial of service (crash) by triggering a free of non-allocated memory.

Affected products

Linux kernel: 2.4.0, 2.4.0-test1, 2.4.0-test10, 2.4.0-test11, 2.4.0-test12, 2.4.0-test2 (+99)

References

http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=blobdiff%3Bh=bbbe80cdaf72a75a463aff9551e60b31e2f69061%3Bhp=f841bde30c18493a94fd5d522b84724a8eb82a4a%3Bhb=4ea6a8046bb49d43c950898f0cb4e1994ef6c89d%3Bf=net/ipv6/ip6_flowlabel.c
http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=4ea6a8046bb49d43c950898f0cb4e1994ef6c89d
http://secunia.com/advisories/17917
http://secunia.com/advisories/17918
http://secunia.com/advisories/18203
http://secunia.com/advisories/18510
http://secunia.com/advisories/18562
http://secunia.com/advisories/18684
http://secunia.com/advisories/18977
http://secunia.com/advisories/19369
http://secunia.com/advisories/19374
http://www.debian.org/security/2006/dsa-1017

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