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CVE-2015-2666

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Date: May 27, 2015

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.

Language: C

Severity Score

Related Resources (11)

https://bugzilla.redhat.com/show_bug.cgi?id=1204722
http://www.openwall.com/lists/oss-security/2015/03/20/18
https://nvd.nist.gov/vuln/detail/CVE-2015-2666
https://access.redhat.com/security/cve/CVE-2015-2666
http://lists.fedoraproject.org/pipermail/package-announce/2015-March/153329.html
http://www.securitytracker.com/id/1032414
https://github.com/torvalds/linux/commit/f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4
https://people.canonical.com/~ubuntu-security/cve/CVE-2015-2666
http://rhn.redhat.com/errata/RHSA-2015-1534.html
https://www.mend.io/vulnerability-database/CVE-2015-2666

Severity Score

Weakness Type (CWE)

Buffer Errors

CWE-119

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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