CVE-2013-6376

Severity: medium (CVSS 5.2 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2013-12-14 · updated 2026-06-17
Weakness: CWE-189

Description

The recalculate_apic_map function in arch/x86/kvm/lapic.c in the KVM subsystem in the Linux kernel through 3.12.5 allows guest OS users to cause a denial of service (host OS crash) via a crafted ICR write operation in x2apic mode.

Affected products

Linux kernel: through 3.12.5; 3.0-rc1, 3.0-rc2, 3.0-rc3, 3.0-rc4, 3.0-rc5, 3.0-rc6 (+271)

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=17d68b763f09a9ce824ae23eb62c9efc57b69271
http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00003.html
http://www.openwall.com/lists/oss-security/2013/12/12/12
http://www.securityfocus.com/bid/64319
http://www.ubuntu.com/usn/USN-2113-1
http://www.ubuntu.com/usn/USN-2117-1
http://www.ubuntu.com/usn/USN-2136-1
https://bugzilla.redhat.com/show_bug.cgi?id=1033106
https://github.com/torvalds/linux/commit/17d68b763f09a9ce824ae23eb62c9efc57b69271
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=17d68b763f09a9ce824ae23eb62c9efc57b69271
http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00002.html

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