CVE-2012-0038

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: 2012-05-17 · updated 2026-06-16
Weakness: CWE-190

Description

Integer overflow in the xfs_acl_from_disk function in fs/xfs/xfs_acl.c in the Linux kernel before 3.1.9 allows local users to cause a denial of service (panic) via a filesystem with a malformed ACL, leading to a heap-based buffer overflow.

Affected products

Linux kernel: before 3.1.9 — fixed in 3.1.9

How to fix

Upgrade to a fixed version: Linux kernel 3.1.9. Check the vendor advisory for mitigations.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=093019cf1b18dd31b2c3b77acce4e000e2cbc9ce
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa8b18edd752a8b4e9d1ee2cd615b82c93cf8bba
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1.9
http://www.openwall.com/lists/oss-security/2012/01/10/11
https://bugzilla.redhat.com/show_bug.cgi?id=773280
https://github.com/torvalds/linux/commit/093019cf1b18dd31b2c3b77acce4e000e2cbc9ce
https://github.com/torvalds/linux/commit/fa8b18edd752a8b4e9d1ee2cd615b82c93cf8bba
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=093019cf1b18dd31b2c3b77acce4e000e2cbc9ce
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa8b18edd752a8b4e9d1ee2cd615b82c93cf8bba
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1.9
http://www.openwall.com/lists/oss-security/2012/01/10/11
https://bugzilla.redhat.com/show_bug.cgi?id=773280

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