CVE-2022-4994

Not scored yetLast modified Nov 10, 2026

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.

Metrics

No CVSS score has been published yet.

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 8370c3d08bd98576d97514eca29970e03767a5d1, < dc7a4bfde507ffe1d8bef49aba1322f1d20c2cb3
LinuxLinux4.10

References

Timeline

Published
Jul 30, 2026
Last modified
Nov 10, 2026
NVD status
Undergoing Analysis

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CVE-2022-4994: Unscored | Vulnix