Vulnerability Report

CVE-2015-2666

Title: Linux Linux Kernel Auth Bypass

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2015-2666.

CWE Category CWE-119
Published Date May 27, 2015
Modified Date Jun 17, 2026
Exploit Status Not Found
Score 6.9 CVSS v2.0
Exploit Probability (EPSS)
0.42%

Vulnerability Summary

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.

Impacted Vendors

L
linux 1
R
redhat 1
U
ubuntu 1
F
fedoraproject 1

Reference Links

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 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
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
6.9
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:L/AC:M/Au:N/C:C/I:C/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2015-2666 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A
Complexity N/A
Privileges N/A
Interaction NONE
CVSS Vector String AV:L/AC:M/Au:N/C:C/I:C/A:C

Affected Stack

No specific products linked.