CVE-2014-1438
Description
The restore_fpu_checking function in arch/x86/include/asm/fpu-internal.h in the Linux kernel before 3.12.8 on the AMD K7 and K8 platforms does not clear pending exceptions before proceeding to an EMMS instruction, which allows local users to cause a denial of service (task kill) or possibly gain privileges via a crafted application.
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
Linux kernel Affected 8 releases
| Version | Status | Fixed in |
|---|---|---|
| 3.12.6 | Affected | — |
| 3.12.5 | Affected | — |
| 3.12.4 | Affected | — |
| 3.12.3 | Affected | — |
| 3.12.2 | Affected | — |
| 3.12.1 | Affected | — |
| 3.12 | Affected | — |
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 3.12.8-1 |
| sid | Fixed | 3.12.8-1 |
| forky | Fixed | 3.12.8-1 |
| bullseye | Fixed | 3.12.8-1 |
| bookworm | Fixed | 3.12.8-1 |
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=26bef1318adc1b3a530ecc807ef99346db2aa8b0
- http://lists.fedoraproject.org/pipermail/package-announce/2014-January/126858.html
- http://lists.fedoraproject.org/pipermail/package-announce/2014-January/126874.html
- http://www.halfdog.net/Security/2013/Vm86SyscallTaskSwitchKernelPanic/
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.12.8
- http://www.mandriva.com/security/advisories?name=MDVSA-2014:038
- http://www.openwall.com/lists/oss-security/2014/01/14/1
- http://www.securityfocus.com/bid/64781
- http://www.securitytracker.com/id/1029592
- http://www.ubuntu.com/usn/USN-2113-1
- http://www.ubuntu.com/usn/USN-2117-1
- http://www.ubuntu.com/usn/USN-2133-1
- http://www.ubuntu.com/usn/USN-2134-1
- http://www.ubuntu.com/usn/USN-2135-1
- http://www.ubuntu.com/usn/USN-2136-1
- http://www.ubuntu.com/usn/USN-2138-1
- http://www.ubuntu.com/usn/USN-2139-1
- http://www.ubuntu.com/usn/USN-2141-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1052914
- https://github.com/torvalds/linux/commit/26bef1318adc1b3a530ecc807ef99346db2aa8b0
- https://lkml.org/lkml/2014/1/9/637
- https://security-tracker.debian.org/tracker/CVE-2014-1438
CWEs
CWE-264
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.