CVE-2005-2456

Severity: medium (CVSS 5.5 v3.1)
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: 2005-08-04 · updated 2026-06-16
Weakness: CWE-667

Description

Array index overflow in the xfrm_sk_policy_insert function in xfrm_user.c in Linux kernel 2.6 allows local users to cause a denial of service (oops or deadlock) and possibly execute arbitrary code via a p->dir value that is larger than XFRM_POLICY_OUT, which is used as an index in the sock->sk_policy array.

Affected products

Debian Linux: 3.1
Linux kernel: 2.6.0

References

http://secunia.com/advisories/16298
http://secunia.com/advisories/16500
http://secunia.com/advisories/17002
http://secunia.com/advisories/17073
http://secunia.com/advisories/17826
http://secunia.com/advisories/18056
http://secunia.com/advisories/18059
http://www.debian.org/security/2005/dsa-921
http://www.debian.org/security/2005/dsa-922
http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=blobdiff%3Bh=8da3e25b2c4c1f305fd85428d3a9eb62b543bfba%3Bhp=ecade4893a139cc35d4fe345ce70242ede5358c4%3Bhb=a4f1bac62564049ea4718c4624b0fadc9f597c84%3Bf=net/xfrm/xfrm_user.c
http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a4f1bac62564049ea4718c4624b0fadc9f597c84
http://www.mail-archive.com/netdev%40vger.kernel.org/msg00520.html

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