CVE-2026-53152: mmc: dw_mmc-rockchip: Add missing private data for very old controllers
In the Linux kernel, the following vulnerability has been resolved:
mmc: dwmmc-rockchip: Add missing private data for very old controllers
The really old controllers (rk2928, rk3066, rk3188) do not support UHS speeds at all, and thus never handled phase data.
For that reason it never had a parsedt callback and no driver private data at all.
Commit ff6f0286c896 ("mmc: dwmmc-rockchip: Add memory clock auto-gating support") makes the private data sort of mandatory, because the init function checks whether phases are configured internally or through the clock controller.
This results in the old SoCs then experiencing NULL-pointer dereferences when they try to access that private-data struct.
While we could have if (priv) conditionals in all places, it's way less cluttery to just give the old types their private-data struct.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-53152?
CVE-2026-53152 has a risk rating of 27, indicating a low to moderate severity.
How do I fix CVE-2026-53152?
To address CVE-2026-53152, ensure that your Linux kernel and dw_mmc-rockchip driver are updated to the latest version where this vulnerability has been resolved.
Which controllers are affected by CVE-2026-53152?
CVE-2026-53152 affects very old controllers including rk2928, rk3066, and rk3188.
What impact does CVE-2026-53152 have on system security?
The vulnerability primarily affects the handling of phase data in older controllers that do not support UHS speeds.
When was CVE-2026-53152 published?
CVE-2026-53152 was published on June 25, 2026.