CVE-2022-49506

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.

The following products are affected by CVE-2022-49506 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2022-49506.

URL	Resource
https://git.kernel.org/stable/c/3a4027b5971fe2a94e32754f007d9d3c12c68ad1
https://git.kernel.org/stable/c/8a265d9838bc3c63579002d55c2b2c655c4f8f26
https://git.kernel.org/stable/c/8a2dbdeccef6de47565638abdf3c25f41cdffc37
https://git.kernel.org/stable/c/b74d921b900b6ce38c6247c0a1c86be9f3746493
https://lore.kernel.org/linux-cve-announce/2025022608-CVE-2022-49506-2808@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2022-49506
https://www.cve.org/CVERecord?id=CVE-2022-49506