CVE-2026-53277 | BDVDB-2026-343295 Detail
LinuxLinux
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.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.
Weaknesses#
- CWE-820 Missing Synchronization
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/security/cve/CVE-2026-53277
- https://bugzilla.redhat.com/show_bug.cgi?id=2492725
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53277.json
- https://access.redhat.com/errata/RHSA-2026:64775
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.