What is CVE-2015-2666?

CVE-2015-2666 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.9 out of 10, classified as a Buffer Overflow flaw (CWE-119). CVE-2015-2666 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2015-2666?

CVE-2015-2666 has a CVSS score of 6.9 out of 10, rated Medium severity. The vector string is AV:L/AC:M/Au:N/C:C/I:C/A:C.

Is there a patch available for CVE-2015-2666?

No patch is currently available for CVE-2015-2666. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2015-2666 actively exploited?

CVE-2015-2666 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/119.html

CVE-2015-2666

Medium

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.

Package Linux Kernel

Published 2015-05-27

Last modified 2026-05-06

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

6.9

out of 10

Medium

Attack Vector

Local

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Vector string

AV:L/AC:M/Au:N/C:C/I:C/A:C

Weakness type

CWE-119

CVE-2015-2666 is a Buffer Overflow vulnerability

What is Buffer Overflow?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2015-2666 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Lists
http://lists.fedoraproject.org/pipermail/package-announce/2015-March/153329.html

Third Party Advisory
Red Hat
http://rhn.redhat.com/errata/RHSA-2015-1534.html

Third Party Advisory
Openwall
http://www.openwall.com/lists/oss-security/2015/03/20/18

Mailing List
Securitytracker
http://www.securitytracker.com/id/1032414

Third Party Advisory VDB Entry
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=1204722

Issue Tracking
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4
Patch

Details

CVE ID CVE-2015-2666

Severity Medium

CVSS score 6.9 / 10

CVSS version 2.0

Published 2015-05-27

Modified 2026-05-06

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2015-2666?

CVE-2015-2666 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.9 out of 10 , classified as a Buffer Overflow flaw (CWE-119) . CVE-2015-2666 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2015-2666?

CVE-2015-2666 has a CVSS score of 6.9 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:L/AC:M/Au:N/C:C/I:C/A:C.
Is there a patch available for CVE-2015-2666?

No patch is currently available for CVE-2015-2666. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2015-2666 actively exploited?

No — CVE-2015-2666 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. View CWE-119 on MITRE CWE →