Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm: bridge/panel: Cleanup connector on bridge detach If we don't call drm_connector_cleanup() manually in panel_bridge_detach(), the connector will be cleaned up with the other DRM objects in the call to drm_mode_config_cleanup(). However, since our drm_connector is devm-allocated, by the time drm_mode_config_cleanup() will be called, our connector will be long gone. Therefore, the connector must be cleaned up when the bridge is detached to avoid use-after-free conditions. v2: Cleanup connector only if it was created v3: Add FIXME v4: (Use connector->dev) directly in if() block
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.13, < 5.10.37 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/18149b420c9bd93c443e8d1f48a063d71d9f6aa1Patch
- https://git.kernel.org/stable/c/4d906839d321c2efbf3fed4bc31ffd9ff55b75c0Patch
- https://git.kernel.org/stable/c/98d7d76a74e48ec3ddf2e23950adff7edcab9327Patch
- https://git.kernel.org/stable/c/ce450934a00cf896e648fde08d0bd1426653d7a2Patch
- https://git.kernel.org/stable/c/18149b420c9bd93c443e8d1f48a063d71d9f6aa1Patch
- https://git.kernel.org/stable/c/4d906839d321c2efbf3fed4bc31ffd9ff55b75c0Patch
- https://git.kernel.org/stable/c/98d7d76a74e48ec3ddf2e23950adff7edcab9327Patch
- https://git.kernel.org/stable/c/ce450934a00cf896e648fde08d0bd1426653d7a2Patch
FAQ
What is CVE-2021-47063?
CVE-2021-47063 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: drm: bridge/panel: Cleanup connector on bridge detach If we don't call drm_connector_cleanup() manually in panel_bridge_detach(), ...
How severe is CVE-2021-47063?
CVE-2021-47063 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-47063?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.