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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +15 | 2.6.32-220.7.1.el6 | RHSA-2012:0350 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6.1 EUS | perf +14 | 2.6.32-131.29.1.el6 | RHSA-2012:1042 |
| Red Hat MRG 2 | kernel-rt +10 | 3.0.18-rt34.53.el6rt | RHSA-2012:0333 |
Advisories 3
- RHSA-2012:0350 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:0333 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:1042 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Nov 22, 2025
References
- [oss-security] 20120110 Re: CVE request: kernel: xfs heap overflow mailing-list
- https://github.com/torvalds/linux/commit/fa8b18edd752a8b4e9d1ee2cd615b82c93cf8bba
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa8b18edd752a8b4e9d1ee2cd615b82c93cf8bba
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=093019cf1b18dd31b2c3b77acce4e000e2cbc9ce
- https://bugzilla.redhat.com/show_bug.cgi?id=773280
- https://github.com/torvalds/linux/commit/093019cf1b18dd31b2c3b77acce4e000e2cbc9ce
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1.9