CVE-2022-4994
- Source
- https://cve.org/CVERecord?id=CVE-2022-4994
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-4994.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-4994
- Downstream
- Published
- 2026-07-30T09:18:06.591Z
- Modified
- 2026-08-01T03:45:39.800672453Z
- Summary
- KVM: x86: wean fast IN from emulator_pio_in
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
KVM: x86: wean fast IN from emulatorpioin
Use __emulatorpioin() directly for fast PIO instead of bouncing through emulatorpioin() now that __emulatorpioin() fills "val" when handling in-kernel PIO. vcpu->arch.pio.count is guaranteed to be '0', so this a pure nop.
emulatorpioinemulated is now the last caller of emulatorpio_in.
No functional change intended.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/4xxx/CVE-2022-4994.json", "cna_assigner": "Linux" }- References