SB20260325133 - NULL Pointer Dereference in Linux kernel accel amdxdna driver

Description

This security bulletin contains information about 1 vulnerability.

1) NULL Pointer Dereference (CVE-ID: CVE-2026-23328)

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 the accel/amdxdna component when handling management channel operations. A local user can trigger improper handling of firmware error responses to cause a denial of service.

The issue arises when mgmt_chann is set to NULL due to an unexpected firmware error, which is later dereferenced during hardware stop operations.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/032ca7a9059c4ba6c329e0f1b442dab54dd9c3e5
• https://git.kernel.org/stable/c/6270ee26e1edd862ea17e3eba148ca8fb2c99dc9