CVE-2015-2666
Description
Stack-based buffer overflow in the get_matching_model_microcode function in arch/x86/kernel/cpu/microcode/intel_early.c in the Linux kernel before 4.0 allows context-dependent attackers to gain privileges by constructing a crafted microcode header and leveraging root privileges for write access to the initrd.
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
Fedora Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| 21 | Affected | — |
Linux kernel Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | 3.10.83 |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 3.16.7-ckt9-1 |
| sid | Fixed | 3.16.7-ckt9-1 |
| forky | Fixed | 3.16.7-ckt9-1 |
| bullseye | Fixed | 3.16.7-ckt9-1 |
| bookworm | Fixed | 3.16.7-ckt9-1 |
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/153329.html
- http://rhn.redhat.com/errata/RHSA-2015-1534.html
- http://www.openwall.com/lists/oss-security/2015/03/20/18
- http://www.securitytracker.com/id/1032414
- https://bugzilla.redhat.com/show_bug.cgi?id=1204722
- https://github.com/torvalds/linux/commit/f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4
- https://security-tracker.debian.org/tracker/CVE-2015-2666
CWEs
CWE-119
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.