Improper access control in Linux kernel - CVE-2026-53057
Published: June 25, 2026
Vulnerability identifier: #VU135290
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-53057
CWE-ID: CWE-284
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 bypass IOMMU memory translation updates.
The vulnerability exists due to improper access control in the RISC-V IOMMU IODIR update handling when updating DDT or PDT entries without performing required IOTINVAL invalidations. A local user can trigger device context updates to bypass IOMMU memory translation updates.
The issue affects the RISC-V IOMMU implementation and arises because required TLB and context cache invalidations were not performed after directory entry updates.
How to mitigate CVE-2026-53057
Install security update from vendor's repository.