Out-of-bounds read in Linux kernel - CVE-2026-53038
Published: June 25, 2026
Vulnerability identifier: #VU135315
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-2026-53038
CWE-ID: CWE-125
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 an out-of-bounds read in create_securityfs_measurement_lists in the IMA securityfs measurement list creation logic when processing TPM banks with unsupported hash algorithms. A local user can trigger initialization on a system with a TPM that reports an unsupported bank algorithm to cause a denial of service.
The issue is triggered during IMA initialization when a TPM bank algorithm is left as HASH_ALGO__LAST and then used as an index into hash_algo_name[].
How to mitigate CVE-2026-53038
Install security update from vendor's repository.