Riskcovery

CVE-2026-98973

drm/bridge: Fix unlocked list_del in drm_bridge_add()

State
Published
Severity
Not scored
Published
Oct 23, 2026
Updated
Oct 23, 2026
Reserved
Sep 25, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

drm/bridge: Fix unlocked list_del in drm_bridge_add()

When re-adding a bridge that was previously removed, drm_bridge_add() drops it from bridge_lingering_list without holding bridge_lock.

Both bridge_list and bridge_lingering_list are protected by bridge_lock, as they are concurrently modified by drm_bridge_remove() and __drm_bridge_free(), and walked by the debugfs 'bridges' file. Running the list_empty() test and the list_del_init() outside of the lock may therefore corrupt either list.

Perform both under bridge_lock.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 17805a15d1751f5d6bb06f924f9bed216feb8db7 to before f469d850854101eae60dd4080244f114a9bcf2b5Affected
  • 17805a15d1751f5d6bb06f924f9bed216feb8db7 to before b62e3db8cdc1680e1c3390591e872f485148541aAffected
LinuxLinux
  • 6.19Affected
  • before 6.19Not affected
  • 7.2.11 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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