Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: clk: sunxi-ng: Unregister clocks/resets when unbinding Currently, unbinding a CCU driver unmaps the device's MMIO region, while leaving its clocks/resets and their providers registered. This can cause a page fault later when some clock operation tries to perform MMIO. Fix this by separating the CCU initialization from the memory allocation, and then using a devres callback to unregister the clocks and resets. This also fixes a memory leak of the `struct ccu_reset`, and uses the correct owner (the specific platform driver) for the clocks and resets. Early OF clock providers are never unregistered, and limited error handling is possible, so they are mostly unchanged. The error reporting is made more consistent by moving the message inside of_sunxi_ccu_probe.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c6a0637460c29799f1e63a6a4a65bda22caf4a54 before b5dd513daa70ee8f6d281a20bd28485ee9bb7db2; affected c6a0637460c29799f1e63a6a4a65bda22caf4a54 before 9bec2b9c6134052994115d2d3374e96f2ccb9b9d |
| Linux / Linux | affected 4.10; unaffected 0 before 4.10; unaffected 5.15.5 through 5.15.*; unaffected 5.16 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/b5dd513daa70ee8f6d281a20bd28485ee9bb7db2
- https://git.kernel.org/stable/c/9bec2b9c6134052994115d2d3374e96f2ccb9b9d
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.