CVE-2026-53200

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

High · published June 25, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
1.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00120 · 1.8th percentile
Published
2026-06-25T08:39Z
EPSS history
Timeline
  • 25 JUN 08:39Z
    KVM: arm64: nv: Fix handling of XN[0] when !FEAT_XNX
    cvelistv5