CVE-2009-1242
What it is
The vmx_set_msr function in arch/x86/kvm/vmx.c in the VMX implementation in the KVM subsystem in the Linux kernel before 2.6.29.1 on the i386 platform allows guest OS users to cause a denial of service (OOPS) by setting the EFER_LME (aka "Long mode enable") bit in the Extended Feature Enable Register (EFER) model-specific register, which is specific to the x86_64 platform.
At a glance
- Exploitability
- Can be exploited locally on the machine without logging in. High risk of service disruption.
- Exploit odds
- 0.5% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.5% in the next 30 days (EPSS).
- Severity: 4.9 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.5% · EPSS, next 30 days
- Weakness
- CWE-20 · Improper input validation
- Record status
- Modified
Affected
- Linux Kernel < 2.6.29.1
- Opensuse 11.0
- Opensuse 11.1
- Debian Linux 4.0
- Debian Linux 5.0
- Canonical Ubuntu Linux 6.06
- Canonical Ubuntu Linux 8.04
- Canonical Ubuntu Linux 8.10
Attack profile CVSS 2.0 · 4.9
- Attack vector
- Local
- Complexity
- Low
- Authentication
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Complete
Raw vector
AV:L/AC:L/Au:N/C:N/I:N/A:C
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2009-1242.md and follow it. Check whether this project is affected by CVE-2009-1242. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- http://openwall.com/lists/oss-security/2009/04/01/3
- http://patchwork.kernel.org/patch/15549/
- https://bugzilla.redhat.com/show_bug.cgi?id=502109
- http://openwall.com/lists/oss-security/2009/04/01/3
- http://patchwork.kernel.org/patch/15549/
- https://bugzilla.redhat.com/show_bug.cgi?id=502109
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=16175a796d061833aacfbd9672235f2d2725df65
- http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00002.html
- http://openwall.com/lists/oss-security/2009/04/01/3
- http://patchwork.kernel.org/patch/15549/
- http://secunia.com/advisories/34478
- http://secunia.com/advisories/34981
- http://secunia.com/advisories/35120
- http://secunia.com/advisories/35121
- http://secunia.com/advisories/35226
- http://secunia.com/advisories/35387
- http://secunia.com/advisories/35394
- http://secunia.com/advisories/35656
- http://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-EFER-8585
- http://wiki.rpath.com/Advisories:rPSA-2009-0084
- http://www.debian.org/security/2009/dsa-1787
- http://www.debian.org/security/2009/dsa-1800
- http://www.globalsecuritymag.com/Vigil-nce-Linux-kernel-denial-of%2C20090402%2C8311
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.1
- http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.29-git1.log
- http://www.securityfocus.com/archive/1/503610/100/0/threaded
- http://www.securityfocus.com/bid/34331
- http://www.ubuntu.com/usn/usn-793-1
- http://www.vupen.com/english/advisories/2009/0924
- https://bugzilla.redhat.com/show_bug.cgi?id=502109