Vulnerability Monitor

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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.

Published

2015-05-27T10:59:04.813

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 6.9 (MEDIUM)

CVSSv2 Vector

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

Access Vector: LOCAL
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

3.4

Impact Score

10.0

Weaknesses

Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	< 3.10.83	Yes
Operating System	linux	linux_kernel	< 3.12.40	Yes
Operating System	linux	linux_kernel	< 3.14.47	Yes
Operating System	linux	linux_kernel	< 3.16.35	Yes
Operating System	linux	linux_kernel	< 3.18.19	Yes
Operating System	fedoraproject	fedora	21	Yes

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4 Broken Link ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-March/153329.html Third Party Advisory ([email protected])
http://rhn.redhat.com/errata/RHSA-2015-1534.html Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2015/03/20/18 Mailing List ([email protected])
http://www.securitytracker.com/id/1032414 Third Party Advisory, VDB Entry ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1204722 Issue Tracking ([email protected])
https://github.com/torvalds/linux/commit/f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4 Patch ([email protected])
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4 Broken Link (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2015-March/153329.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2015-1534.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/03/20/18 Mailing List (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1032414 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1204722 Issue Tracking (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/torvalds/linux/commit/f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4 Patch (af854a3a-2127-422b-91ae-364da2661108)