Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 3.18 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://thread.gmane.org/gmane.comp.emulators.kvm.devel/128427
- http://www.openwall.com/lists/oss-security/2014/10/23/7Exploit
- http://www.securityfocus.com/bid/70710
- https://bugzilla.redhat.com/show_bug.cgi?id=1156615
- https://github.com/torvalds/linux/commit/3f6f1480d86bf9fc16c160d803ab1d006e3058dExploit
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://thread.gmane.org/gmane.comp.emulators.kvm.devel/128427
- http://www.openwall.com/lists/oss-security/2014/10/23/7Exploit
- http://www.securityfocus.com/bid/70710
- https://bugzilla.redhat.com/show_bug.cgi?id=1156615
- https://github.com/torvalds/linux/commit/3f6f1480d86bf9fc16c160d803ab1d006e3058dExploit
FAQ
What is CVE-2014-8480?
CVE-2014-8480 is a vulnerability with a CVSS score of 4.9 (MEDIUM). 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 ...
How severe is CVE-2014-8480?
CVE-2014-8480 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2014-8480?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.