Description
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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
9b0704988b151824a51133dc4c921f4273c5d839 to < 8a2dbdeccef6de47565638abdf3c25f41cdffc37affected9b0704988b151824a51133dc4c921f4273c5d839 to < 8a265d9838bc3c63579002d55c2b2c655c4f8f26affected9b0704988b151824a51133dc4c921f4273c5d839 to < 3a4027b5971fe2a94e32754f007d9d3c12c68ad1affected9b0704988b151824a51133dc4c921f4273c5d839 to < b74d921b900b6ce38c6247c0a1c86be9f3746493affected
Linux Linux
Default version status: affected
5.12affected0 to < 5.12unaffected5.15.54 to ≤ 5.15.*unaffected5.17.14 to ≤ 5.17.*unaffected5.18.3 to ≤ 5.18.*unaffected5.19 to ≤ *unaffected