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CVE-2026-98973

Linux: drm/bridge: Fix unlocked list_del in drm_bridge_add()

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed inNone listedNo source names a fixed version yet
Published23 Oct 2026Updated 23 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version.

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.

Text from CVE List

Affected versions 6

  • Linuxaffected: 17805a15d1751f5d6bb06f924f9bed216feb8db7 before f469d850854101eae60dd4080244f114a9bcf2b5CVE List
  • Linuxaffected: 17805a15d1751f5d6bb06f924f9bed216feb8db7 before b62e3db8cdc1680e1c3390591e872f485148541aCVE List
  • Linuxaffected: 6.19CVE List
  • Linuxunaffected: all versions before 6.19CVE List
  • Linuxunaffected: 7.2.11 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 2