CVE-2014-8480

Severity: medium (CVSS 4.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2014-11-10 · updated 2026-06-17
Weakness: CWE-399

Description

The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before 3.18-rc2 lacks intended decoder-table flags for certain RIP-relative instructions, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) via a crafted application.

Affected products

Linux kernel: through 3.18

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3f6f1480d86bf9fc16c160d803ab1d006e3058d5
http://thread.gmane.org/gmane.comp.emulators.kvm.devel/128427
http://www.openwall.com/lists/oss-security/2014/10/23/7
http://www.securityfocus.com/bid/70710
https://bugzilla.redhat.com/show_bug.cgi?id=1156615
https://github.com/torvalds/linux/commit/3f6f1480d86bf9fc16c160d803ab1d006e3058d5
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3f6f1480d86bf9fc16c160d803ab1d006e3058d5
http://thread.gmane.org/gmane.comp.emulators.kvm.devel/128427
http://www.openwall.com/lists/oss-security/2014/10/23/7
http://www.securityfocus.com/bid/70710
https://bugzilla.redhat.com/show_bug.cgi?id=1156615
https://github.com/torvalds/linux/commit/3f6f1480d86bf9fc16c160d803ab1d006e3058d5

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