Use After Free Affecting kernel package, versions *
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Test your applications- Snyk ID SNYK-CENTOS7-KERNEL-6353845
- published 1 Mar 2024
- disclosed 29 Feb 2024
Introduced: 29 Feb 2024
CVE-2021-47063 Open this link in a new tabHow to fix?
There is no fixed version for Centos:7 kernel.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
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
References
- https://access.redhat.com/security/cve/CVE-2021-47063
- https://git.kernel.org/stable/c/18149b420c9bd93c443e8d1f48a063d71d9f6aa1
- https://git.kernel.org/stable/c/4d906839d321c2efbf3fed4bc31ffd9ff55b75c0
- https://git.kernel.org/stable/c/98d7d76a74e48ec3ddf2e23950adff7edcab9327
- https://git.kernel.org/stable/c/ce450934a00cf896e648fde08d0bd1426653d7a2