Buffer overflow in Linux Kernel
CVE-2015-2666
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v2 metric
CVSS v2 base score 6.9 (Medium). Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.004 (33.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Linux Kernel
- Fedoraproject Fedora — versions 21
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.fedoraproject.org/pipermail/package-announce/2015-March/153329.html (vendor-advisory, Third Party Advisory)
- www.securitytracker.com/id/1032414 (VDB Entry, Third Party Advisory, vdb-entry)
- www.openwall.com/lists/oss-security/2015/03/20/18 (mailing-list, Mailing List)
- github.com/torvalds/linux/commit/f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4 (Patch)
- git.kernel.org/ (Broken Link)
- rhn.redhat.com/errata/RHSA-2015-1534.html (vendor-advisory, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking)
Frequently asked questions
- What is CVE-2015-2666?
- CVE-2015-2666 is a vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2015-05-27.
- Is CVE-2015-2666 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.