---
id: CVE-2026-53277
title: >-
  In the Linux kernel, the following vulnerability has been resolved:


  KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT
  emulation


  walk_s1() and kvm_walk_nested_s2() expect to be called while holding

  kvm->srcu …
summary: >-
  In the Linux kernel, the following vulnerability has been resolved:


  KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT
  emulation


  walk_s1() and kvm_walk_nested_s2() expect to be called while holding

  kvm->srcu …
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-662
  - CWE-820
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 6.12, < 6.18.36'
  - 'linux_kernel >= 6.19, < 7.0.13'
  - linux_kernel = 7.1
patched:
  - linux_kernel 7.0.13
published: '2026-06-25'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T13:20:29.430'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-53277'
references:
  - url: 'https://git.kernel.org/stable/c/97706097f9b851cfe55c3b00b083dfc2bcf542bc'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ec42b4ed1b072ea2d03f086061aa67bad6d8de39'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f2ca45b50d4216c9cc7ffabf50d9ad1932209251'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://access.redhat.com/errata/RHSA-2026:64775'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/security/cve/CVE-2026-53277'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2492725'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53277.json
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-13T19:59:02.772Z'
epss: 0.00153
epssPercentile: 0.0367
---

## Overview

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

KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation

walk_s1() and kvm_walk_nested_s2() expect to be called while holding
kvm->srcu to guard against memslot changes. While this is generally
the case, __kvm_at_s12() and __kvm_find_s1_desc_level() call into the
respective walkers without taking kvm->srcu.

Fix by acquiring kvm->srcu prior to the table walk in both instances.

## Affected

- `linux_kernel >= 6.12, < 6.18.36`
- `linux_kernel >= 6.19, < 7.0.13`
- `linux_kernel = 7.1`

## Remediation

Upgrade past the affected range:

- `linux_kernel 7.0.13`