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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
be04cebf3e78874627dc1042991d5d504464a5cc to < 0648b375aa951cc15d9e90f9ac4de71e0b51fa45affectedbe04cebf3e78874627dc1042991d5d504464a5cc to < 97706097f9b851cfe55c3b00b083dfc2bcf542bcaffectedbe04cebf3e78874627dc1042991d5d504464a5cc to < ec42b4ed1b072ea2d03f086061aa67bad6d8de39affectedbe04cebf3e78874627dc1042991d5d504464a5cc to < f2ca45b50d4216c9cc7ffabf50d9ad1932209251affected
Linux Linux
Default version status: affected
6.12affected0 to < 6.12unaffected6.12.114 to ≤ 6.12.*unaffected6.18.36 to ≤ 6.18.*unaffected7.0.13 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
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 ↗