Buffer overflow in the kvm_vcpu_ioctl_x86_setup_mce function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel before…

Description

Buffer overflow in the kvm_vcpu_ioctl_x86_setup_mce function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel before 2.6.32-rc7 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via a KVM_X86_SETUP_MCE IOCTL request that specifies a large number of Machine Check Exception (MCE) banks.

Scores

EPSS (exploitation in 30 days)

0.41% · top 65% of all CVEs (5 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Weakness

• n/a
• CWE-119 (opens in a new tab)All about CWE-119 and its CVEs

Affected products

• n/a

  • affected n/a

References (6)

• http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc7 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 37035 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a9e38c3e01ad242fe2a625354cf065c34b01e3aa (opens in a new tab)x_refsource_CONFIRMx_transferred
• ADV-2009-3267 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• kernel-kvmvcpuioctl-privilege-escalation(54302) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• 37357 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2009-4004](https://trackcve.app/badge/CVE-2009-4004.svg)](https://trackcve.app/cve/CVE-2009-4004)

Record last updated 7 Aug 2024, 06:45 UTC.