Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: Add vblank register/unregister callback functions We encountered a kernel panic issue that callback data will be NULL when it's using in ovl irq handler. There is a timing issue between mtk_disp_ovl_irq_handler() and mtk_ovl_disable_vblank(). To resolve this issue, we use the flow to register/unregister vblank cb: - Register callback function and callback data when crtc creates. - Unregister callback function and callback data when crtc destroies. With this solution, we can assure callback data will not be NULL when vblank is disable.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 9b0704988b151824a51133dc4c921f4273c5d839 before 8a2dbdeccef6de47565638abdf3c25f41cdffc37; affected 9b0704988b151824a51133dc4c921f4273c5d839 before 8a265d9838bc3c63579002d55c2b2c655c4f8f26; affected 9b0704988b151824a51133dc4c921f4273c5d839 before 3a4027b5971fe2a94e32754f007d9d3c12c68ad1; affected 9b0704988b151824a51133dc4c921f4273c5d839 before b74d921b900b6ce38c6247c0a1c86be9f3746493 |
| Linux / Linux | affected 5.12; unaffected 0 before 5.12; unaffected 5.15.54 through 5.15.*; unaffected 5.17.14 through 5.17.*; unaffected 5.18.3 through 5.18.*; unaffected 5.19 through * |
CWE
No CWE identifiers supplied.