CVE catalog
CVE-2009-4031
kvm - several vulnerabilities
- Severity
- Unknown
- Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 3.11% · Oct 27, 2026
The do_insn_fetch function in arch/x86/kvm/emulate.c in the x86 emulator in the KVM subsystem in the Linux kernel before 2.6.32-rc8-next-20091125 tries to interpret instructions that contain too many bytes to be valid, which allows guest OS users to cause a denial of service (increased scheduling latency) on the host OS via unspecified manipulations related to SMP support. kernel: KVM: x86 emulator: limit instructions to 15 bytes The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | kvm | 5.0 | 72+dfsg-4 | vulnerable |
| Debian | kvm | 5.0 | 72+dfsg-5~lenny1 | vulnerable |
| Debian | kvm | 5.0 | 72+dfsg-5~lenny2 | vulnerable |
| Debian | kvm | 5.0 | 72+dfsg-5~lenny3 | vulnerable |
| Debian | kvm | 5.0 | 72+dfsg-5~lenny4 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | kvm | deb | 5.0 | 72+dfsg-5~lenny4 | Not reported | DSA-1962-1 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed: