NULL pointer dereference in Linux kernel - CVE-2026-53204
Published: June 26, 2026
Vulnerability identifier: #VU135590
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-2026-53204
CWE-ID: CWE-476
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 NULL pointer dereference in stratix10_rsu_probe() and the stratix10 RSU receive callback path when handling rsu_send_msg() timeouts during probe. A local user can trigger a timeout condition so that additional requests are queued on a channel whose scl pointer has been cleared to cause a denial of service.
The issue occurs in error paths for COMMAND_RSU_DCMF_VERSION, COMMAND_RSU_DCMF_STATUS, COMMAND_RSU_MAX_RETRY, and COMMAND_RSU_GET_SPT_TABLE.
How to mitigate CVE-2026-53204
Install security update from vendor's repository.