CVE-2009-1242: canonical ubuntu_linux Improper Input Validation

Modified

Published 06-04-2009Last modified 07-08-2024

Vulnerability summary

CVE-2009-1242 is a medium (CVSS 4.9) Improper Input Validation vulnerability in canonical ubuntu_linux. EPSS estimates a 0.47% chance of exploitation in the next 30 days, higher than 40.9% of scored vulnerabilities.

Priority

Routine

Not severe (CVSS 4.9, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

4.9/10

010

Medium · v2.0 (NVD)

EPSS score

0.47%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2

DSA-1787-1 DSA-1800-1

Timeline

06-04-2009
PublishedVulnerability first disclosed.
07-08-2024
Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

1 score · 1 source · 1 version

v2.04.9

EPSS trend

Probability

0.47%

Chance of exploitation in the next 30 days

Percentile

41%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.47% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Affected systems

Version check

Known conditions: local access, no authentication (CVSS vector). Other conditions: not stated in public data.

Canonical1 product

ubuntu_linuxEOL6.06 | 8.04 | 8.10 | 9.04

Debian1 product

debian_linuxEOL4.0 | 5.0

Fedoraproject1 product

fedoraEOL10

Linux1 product

linux_kernel< 2.6.29.1

Opensuse1 product

opensuseEOL11.0 | 11.1

5 vendors · 5 products

References

27 links

www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.29-git1.logX Refsource CONFIRMBroken Link
www.globalsecuritymag.com/Vigil-nce-Linux-kernel-denial-of%2C20090402%2C8311X Refsource MISC
exchange.xforce.ibmcloud.com/vulnerabilities/49594VDB EntryX Refsource XFThird Party Advisory
secunia.com/advisories/35226Third Party AdvisoryX Refsource SECUNIA
patchwork.kernel.org/patch/15549/X Refsource CONFIRMPatchVendor Advisory
www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.1X Refsource CONFIRMBroken Link
secunia.com/advisories/34478Third Party AdvisoryX Refsource SECUNIA
www.securityfocus.com/bid/34331VDB EntryX Refsource BIDThird Party Advisory
git.kernel.orgX Refsource CONFIRM
www.redhat.com/archives/fedora-package-announce/2009-May/msg01126.htmlVendor AdvisoryX Refsource FEDORAThird Party Advisory

Show all 27 references

lists.opensuse.org/opensuse-security-announce/2009-06/msg00002.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
secunia.com/advisories/35656Third Party AdvisoryX Refsource SECUNIA
www.securityfocus.com/archive/1/503610/100/0/threadedMailing ListX Refsource BUGTRAQThird Party AdvisoryVDB Entry
vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-EFER-8585X Refsource MISCThird Party Advisory
secunia.com/advisories/35120Third Party AdvisoryX Refsource SECUNIA
lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
www.ubuntu.com/usn/usn-793-1Vendor AdvisoryX Refsource UBUNTUThird Party Advisory
secunia.com/advisories/34981Third Party AdvisoryX Refsource SECUNIA
www.debian.org/security/2009/dsa-1800Vendor AdvisoryX Refsource DEBIANThird Party Advisory
secunia.com/advisories/35387Third Party AdvisoryX Refsource SECUNIA
www.debian.org/security/2009/dsa-1787Vendor AdvisoryX Refsource DEBIANThird Party Advisory
wiki.rpath.com/Advisories:rPSA-2009-0084X Refsource CONFIRMBroken Link
openwall.com/lists/oss-security/2009/04/01/3Mailing ListX Refsource MLISTPatchThird Party Advisory
secunia.com/advisories/35121Third Party AdvisoryX Refsource SECUNIA
www.vupen.com/english/advisories/2009/0924VDB EntryX Refsource VUPENBroken Link
bugzilla.redhat.com/show_bug.cgi?id=502109X Refsource CONFIRMIssue TrackingPatchThird Party Advisory
secunia.com/advisories/35394Third Party AdvisoryX Refsource SECUNIA