CVE-2026-53200

KVM: arm64: nv: Fix handling of XN[0] when !FEAT_XNX

State: Published
Severity: 8.8 High
Published: Jun 25, 2026
Updated: Aug 5, 2026
Reserved: Jun 9, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

KVM: arm64: nv: Fix handling of XN[0] when !FEAT_XNX

XN has already been extracted from its bitfield position so using FIELD_PREP() on the mask that clears XN[0] is completely broken, having the effect of unconditionally granting execute permissions...

Fix the obvious mistake by manipulating the right bit.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	d93febe2ed2e0491af9d47f0ee6d4b01918877f4 to before b95976c2ea446044553a5f469c0bae13553d75abAffected d93febe2ed2e0491af9d47f0ee6d4b01918877f4 to before 49b32ddb87a3a109afecea89e55d70f73956b8bcAffected
LinuxLinux	6.19Affected before 6.19Not affected 7.0.13 through 7.0.*Not affected 7.1 and laterNot affected

References

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