CVE-2015-2666
medium
CVSS v3
—
CVSS v2
6.9
VIR risk
6.9
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
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2015-2666
Vendor advisory: cve@mitre.org — https://github.com/torvalds/linux/commit/f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| linux-kernel | affected | 3.10.83 | |
| fedora | 21 | affected | |
| debian | bookworm | fixed | 3.16.7-ckt9-1 |
| debian | bullseye | fixed | 3.16.7-ckt9-1 |
| debian | forky | fixed | 3.16.7-ckt9-1 |
| debian | sid | fixed | 3.16.7-ckt9-1 |
| debian | trixie | 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
Verify integrity in audit chain (admin only). AS-IS.