Race condition in Linux kernel - CVE-2026-53277
Published: June 26, 2026
Vulnerability identifier: #VU135482
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-53277
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a race condition in arm64 KVM page table walk handling when performing fault injection and address translation emulation. A local user can trigger page table walks without the required SRCU protection to cause a denial of service.
The issue affects calls to __kvm_at_s12() and __kvm_find_s1_desc_level() that invoke nested stage-2 and stage-1 walkers without holding kvm->srcu.
How to mitigate CVE-2026-53277
Install security update from vendor's repository.