CVE - CVE-2022-49506

CVE-ID
CVE-2022-49506	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/3a4027b5971fe2a94e32754f007d9d3c12c68ad1 URL:https://git.kernel.org/stable/c/3a4027b5971fe2a94e32754f007d9d3c12c68ad1 MISC:https://git.kernel.org/stable/c/8a265d9838bc3c63579002d55c2b2c655c4f8f26 URL:https://git.kernel.org/stable/c/8a265d9838bc3c63579002d55c2b2c655c4f8f26 MISC:https://git.kernel.org/stable/c/8a2dbdeccef6de47565638abdf3c25f41cdffc37 URL:https://git.kernel.org/stable/c/8a2dbdeccef6de47565638abdf3c25f41cdffc37 MISC:https://git.kernel.org/stable/c/b74d921b900b6ce38c6247c0a1c86be9f3746493 URL:https://git.kernel.org/stable/c/b74d921b900b6ce38c6247c0a1c86be9f3746493
Assigning CNA
kernel.org
Date Record Created
20250226	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250226)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
This is an record on the CVE List, which provides common identifiers for publicly known cybersecurity vulnerabilities.
Search CVE Using Keywords: You can also search by reference using the CVE Reference Maps.
For More Information: CVE Request Web Form (select "Other" from dropdown)