CVE-2026-53277

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.

CVSS 3.1

8.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS

0.1% chance of exploitation in the next 30 days; higher than 1% of CVEs (scores of 2026-10-25)

CWEs

CWE-662, CWE-820

Published

2026-06-25

Modified

2026-10-21

Record from

the NVD, synced 2026-10-22

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/0648b375aa951cc15d9e90f9ac4de71e0b51fa45
• https://git.kernel.org/stable/c/97706097f9b851cfe55c3b00b083dfc2bcf542bc
• https://git.kernel.org/stable/c/ec42b4ed1b072ea2d03f086061aa67bad6d8de39
• https://git.kernel.org/stable/c/f2ca45b50d4216c9cc7ffabf50d9ad1932209251
• https://access.redhat.com/errata/RHSA-2026:64775

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