Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: clk: mediatek: pllfh: Fix IO remapping leak in register_pllfhs error path When mtk_clk_register_pllfhs function fails to register a PLL, it unregisters all PLLs and cleans up itself in its error path before returning, so the function callers don't need to do it. But contrary to mtk_clk_unregister_pllfhs function, that does almost the same sequence, it does not free the IO memory mapped on fhctl node, leading to a leak. Fix this leak by factorizing the cleanup sequence in a new private function and use it both mtk_clk_register_pllfhs and mtk_clk_unregister_pllfhs functions. Also, change the loop index start value to avoid the -1 operation on index at each loop.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d7964de8a8ea800910fdd4e365c42a9e7d5c54aa before 6e3e93bc718c4fea556d7ca5fba07ab3511c9918; affected d7964de8a8ea800910fdd4e365c42a9e7d5c54aa before 111235106099019b8a8d1947dc5c2674e0329ffa; affected d7964de8a8ea800910fdd4e365c42a9e7d5c54aa before d35e45e5bad4fabcf122126402b6c6dcb4379672; affected d7964de8a8ea800910fdd4e365c42a9e7d5c54aa before fea0b4fd891a2af77b55e05b950e7ea55b5d234e; affected d7964de8a8ea800910fdd4e365c42a9e7d5c54aa before 540d91480bcb1b28a62d7023aa70947ea44c55b9 |
| Linux / Linux | affected 6.2; unaffected 0 before 6.2; unaffected 6.6.160 through 6.6.*; unaffected 6.12.114 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/6e3e93bc718c4fea556d7ca5fba07ab3511c9918
- https://git.kernel.org/stable/c/111235106099019b8a8d1947dc5c2674e0329ffa
- https://git.kernel.org/stable/c/d35e45e5bad4fabcf122126402b6c6dcb4379672
- https://git.kernel.org/stable/c/fea0b4fd891a2af77b55e05b950e7ea55b5d234e
- https://git.kernel.org/stable/c/540d91480bcb1b28a62d7023aa70947ea44c55b9