CVE-2012-2375
Description
The __nfs4_get_acl_uncached function in fs/nfs/nfs4proc.c in the NFSv4 implementation in the Linux kernel before 3.3.2 uses an incorrect length variable during a copy operation, which allows remote NFS servers to cause a denial of service (OOPS) by sending an excessive number of bitmap words in an FATTR4_ACL reply. NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-4131.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 3.2.19-1 |
| debian | bullseye | fixed | 3.2.19-1 |
| debian | forky | fixed | 3.2.19-1 |
| debian | sid | fixed | 3.2.19-1 |
| debian | trixie | fixed | 3.2.19-1 |
| linux-kernel | affected | | |
| linux-kernel | 3.3 | affected | |
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=20e0fa98b751facf9a1101edaefbc19c82616a68
- http://marc.info/?l=bugtraq&m=139447903326211&w=2
- http://rhn.redhat.com/errata/RHSA-2012-1580.html
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.2
- http://www.openwall.com/lists/oss-security/2012/05/18/13
- https://bugzilla.redhat.com/show_bug.cgi?id=822869
- https://github.com/torvalds/linux/commit/20e0fa98b751facf9a1101edaefbc19c82616a68
- https://security-tracker.debian.org/tracker/CVE-2012-2375
CWEs
CWE-189
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.