NULL pointer dereference in Linux kernel - CVE-2026-53152
Published: June 26, 2026
Vulnerability identifier: #VU135636
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-2026-53152
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 the dw_mmc-rockchip driver when initializing very old Rockchip MMC controllers. A local user can trigger initialization of an affected controller to cause a denial of service.
The issue affects rk2928, rk3066, and rk3188 controllers that do not support UHS speeds and therefore lacked driver private data for phase handling.
How to mitigate CVE-2026-53152
Install security update from vendor's repository.