CVE-2021-47063: drm: bridge/panel: Cleanup connector on bridge detach

First published: Thu Feb 29 2024(Updated: )

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

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

• agent/weakness
• agent/title
• agent/type
• agent/first-publish-date
• collector/launchpad-cve
• source/Launchpad
• agent/author
• agent/references
• agent/remedy
• agent/severity
• collector/usn-cve
• source/Ubuntu
• agent/description
• agent/event
• collector/mitre-cve
• source/MITRE
• agent/last-modified-date
• agent/trending
• agent/source
• agent/tags
• collector/security-tracker-debian
• source/Debian
• agent/software-canonical-lookup
• agent/softwarecombine
• collector/nvd-api
• source/NVD
• agent/software-canonical-lookup-request
• collector/nvd-cve
• package-manager/debian
• vendor/linux
• canonical/linux kernel
• version/linux kernel/4.13
• version/linux kernel/5.11
• version/linux kernel/5.12