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Debian: CVE-2021-47063: linux -- security update

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Debian: CVE-2021-47063: linux -- security update

Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
02/29/2024
Created
07/31/2024
Added
07/30/2024
Modified
01/30/2025

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

Solution(s)

  • debian-upgrade-linux

References

  • https://attackerkb.com/topics/cve-2021-47063
  • CVE - 2021-47063
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