CVE-2009-0269

Severity: medium (CVSS 4.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-01-26 · updated 2026-06-16
Weakness: CWE-787

Description

fs/ecryptfs/inode.c in the eCryptfs subsystem in the Linux kernel before 2.6.28.1 allows local users to cause a denial of service (fault or memory corruption), or possibly have unspecified other impact, via a readlink call that results in an error, leading to use of a -1 return value as an array index.

Affected products

Canonical Ubuntu Linux: 7.10, 8.04, 8.10
Debian Linux: 4.0, 5.0
Linux kernel: before 2.6.28.1 — fixed in 2.6.28.1
Opensuse: 10.3, 11.0, 11.1

How to fix

Upgrade to a fixed version: Linux kernel 2.6.28.1. Check the vendor advisory for mitigations.

References

http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.27.y.git%3Ba=commit%3Bh=a17d5232de7b53d34229de79ec22f4bb04adb7e4
http://lists.opensuse.org/opensuse-security-announce/2009-02/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html
http://secunia.com/advisories/33758
http://secunia.com/advisories/34394
http://secunia.com/advisories/34502
http://secunia.com/advisories/34981
http://secunia.com/advisories/35390
http://secunia.com/advisories/35394
http://secunia.com/advisories/37471
http://www.debian.org/security/2009/dsa-1749

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