CVEvulnerability
CVE-2014-8481
4.9 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2014-11-10
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 2.0 ([email protected])
- 4.9 MEDIUM — AV:L/AC:L/Au:N/C:N/I:N/A:C
- Weaknesses
- CWE-399
Description
The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before 3.18-rc2 does not properly handle invalid instructions, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) via a crafted application that triggers (1) an improperly fetched instruction or (2) an instruction that occupies too many bytes. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-8480.
Affected configurations
• linux linux kernel (<= 3.18)
Related
Weakness · not in database (1)
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a430c9166312e1aa3d80bce32374233bdbfeba32 git.kernel.org
- http://secunia.com/advisories/62042 secunia.com
- http://thread.gmane.org/gmane.comp.emulators.kvm.devel/128427 thread.gmane.org
- http://www.openwall.com/lists/oss-security/2014/10/23/7 Exploit
- https://bugzilla.redhat.com/show_bug.cgi?id=1156615 bugzilla.redhat.com
- https://github.com/torvalds/linux/commit/a430c9166312e1aa3d80bce32374233bdbfeba32 Exploit
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a430c9166312e1aa3d80bce32374233bdbfeba32 git.kernel.org
- http://secunia.com/advisories/62042 secunia.com
- http://thread.gmane.org/gmane.comp.emulators.kvm.devel/128427 thread.gmane.org
- http://www.openwall.com/lists/oss-security/2014/10/23/7 Exploit
- https://bugzilla.redhat.com/show_bug.cgi?id=1156615 bugzilla.redhat.com
- https://github.com/torvalds/linux/commit/a430c9166312e1aa3d80bce32374233bdbfeba32 Exploit