CVE-2015-2666

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Summary

CVECVE-2015-2666
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2015-05-27 10:59:04 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionStack-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.

Risk And Classification

Primary CVSS: v2.0 6.9 from [email protected]

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

Problem Types: CWE-119 | n/a

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
x86/microcode/intel: Guard against stack overflow in the loader · torvalds/linux@f84598b · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com Third Party Advisory
Linux Kernel Buffer Overflow in get_matching_model_microcode() Lets Local Users Gain Elevated Privileges - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Broken Link
[SECURITY] Fedora 21 Update: kernel-3.19.2-201.fc21 af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org Third Party Advisory
Bug 1204722 – CVE-2015-2666 kernel: execution in the early microcode loader af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking
oss-security - Re: CVE Request: Linux kernel execution in the early microcode loader. af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
kernel/git/torvalds/linux.git - Linux kernel source tree MITRE git.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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