CVE-2026-98973 (GCVE-0-2026-98973)

Vulnerability from cvelistv5 – Published: 2026-10-23 12:19 – Updated: 2026-10-23 12:19
VLAI
Title
drm/bridge: Fix unlocked list_del in drm_bridge_add()
Summary
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.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7061 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 17805a15d1751f5d6bb06f924f9bed216feb8db7 , < f469d850854101eae60dd4080244f114a9bcf2b5 (git)
Affected: 17805a15d1751f5d6bb06f924f9bed216feb8db7 , < b62e3db8cdc1680e1c3390591e872f485148541a (git)
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Linux Linux Affected: 6.19
Unaffected: 0 , < 6.19 (semver)
Unaffected: 7.2.11 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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        }
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      "providerMetadata": {
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    "dateReserved": "2026-09-25T10:25:14.383Z",
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        "descriptions": [
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/bridge: Fix unlocked list_del in drm_bridge_add()\n\nWhen re-adding a bridge that was previously removed, drm_bridge_add()\ndrops it from bridge_lingering_list without holding bridge_lock.\n\nBoth bridge_list and bridge_lingering_list are protected by bridge_lock,\nas they are concurrently modified by drm_bridge_remove() and\n__drm_bridge_free(), and walked by the debugfs \u0027bridges\u0027 file.  Running\nthe list_empty() test and the list_del_init() outside of the lock may\ntherefore corrupt either list.\n\nPerform both under bridge_lock."
          }
        ],
        "id": "CVE-2026-98973",
        "lastModified": "2026-10-23T13:17:18.900",
        "metrics": {},
        "published": "2026-10-23T13:17:18.900",
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}



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