CVE-2026-53277

HighCVSS 8.8/10Last modified Oct 21, 2026

Description

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-662CWE-820

Affected software

VendorProductVersions
LinuxLinux>= be04cebf3e78874627dc1042991d5d504464a5cc, < 0648b375aa951cc15d9e90f9ac4de71e0b51fa45; >= be04cebf3e78874627dc1042991d5d504464a5cc, < 97706097f9b851cfe55c3b00b083dfc2bcf542bc; >= be04cebf3e78874627dc1042991d5d504464a5cc, < ec42b4ed1b072ea2d03f086061aa67bad6d8de39; >= be04cebf3e78874627dc1042991d5d504464a5cc, < f2ca45b50d4216c9cc7ffabf50d9ad1932209251
LinuxLinux6.12
Red HatRed Hat Enterprise Linux 10—
Red HatRed Hat Enterprise Linux 6—
Red HatRed Hat Enterprise Linux 7—
Red HatRed Hat Enterprise Linux 7—
Red HatRed Hat Enterprise Linux 8—
Red HatRed Hat Enterprise Linux 8—
Red HatRed Hat Enterprise Linux 9—
Red HatRed Hat Enterprise Linux 9—

References

Timeline

Published
Jun 25, 2026
Last modified
Oct 21, 2026
NVD status
Modified

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CVE-2026-53277: High severity, CVSS 8.8 | Vulnix