SB20260626148 - NULL pointer dereference in Linux kernel firmware driver

Description

This security bulletin contains information about 1 vulnerability.

1) NULL pointer dereference (CVE-ID: CVE-2026-53204)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 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

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.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/6bc249d324241c64118a3018124798c28e2950f7
• https://git.kernel.org/stable/c/bfd2eb9bba548a8f63c3339bb1fb9a2031a42d86