Description
Integer overflow in the kvm_dev_ioctl_get_supported_cpuid function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel before 2.6.31.4 allows local users to have an unspecified impact via a KVM_GET_SUPPORTED_CPUID request to the kvm_arch_dev_ioctl function.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 5.0 | kvm | 72+dfsg-5~lenny4 | DSA-1962-1 |
| Debian 5.0 | linux-2.6 | 2.6.26-19lenny2 | DSA-1927-1 |
Advisories 2
- DSA-1962-1 kvm - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1927-1 linux-2.6 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.31.4
- [oss-security] 20091023 Re: CVE request: kvm: integer overflow in kvm_dev_ioctl_get_supported_cpuid() mailing-list
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6a54435560efdab1a08f429a954df4d6c740bddf
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc4
- USN-864-1 vendor-advisory
- MDVSA-2009:329 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=530515
- linux-kernel-supportedcpuid-code-execution(53934) vdb-entry
- 36803 vdb-entry
- [oss-security] 20091023 CVE request: kvm: integer overflow in kvm_dev_ioctl_get_supported_cpuid() mailing-list
- FEDORA-2009-11038 vendor-advisory