CVE-2022-49506
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-49506
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49506.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-49506
- Related
- Published
- 2025-02-26T07:01:26Z
- Modified
- 2025-02-26T07:01:26Z
- Summary
- [none]
- Details
-
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 mtkdispovlirqhandler() and mtkovldisable_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
-
- 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://security-tracker.debian.org/tracker/CVE-2022-49506
Affected packages
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source