CVE-2022-4994
Unknown
Description
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: wean fast IN from emulator_pio_in Use __emulator_pio_in() directly for fast PIO instead of bouncing through emulator_pio_in() now that __emulator_pio_in() fills "val" when handling in-kernel PIO. vcpu->arch.pio.count is guaranteed to be '0', so this a pure nop. emulator_pio_in_emulated is now the last caller of emulator_pio_in. No functional change intended.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedJul 30, 2026
First seenJul 30, 2026
How to fix
Update
- Linux Linuxdc7a4bfde507ffe1d8bef49aba1322f1d20c2cb3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 8370c3d08bd98576d97514eca29970e03767a5d1 ≤ v < dc7a4bfde507ffe1d8bef49aba1322f1d20c2cb3, 4.10 | dc7a4bfde507ffe1d8bef49aba1322f1d20c2cb3 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.