VulnerabilityPublished 23 Oct 2026

CVE-2026-98973: Linux kernel · drm/bridge: Fix unlocked list_del in drm_bridge_add()

Source GCVE Database

Authoritative record:CVE-2026-98973· Medium

Not known to be exploited : upgrade to f469d850854101eae60dd4080244f114a9bcf2b5 or b62e3db8cdc1680e1c3390591e872f485148541a when convenient.

Data as of 26 Oct 2026, 17:16 UTC

Severity

Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in f469d850854101eae60dd4080244f114a9bcf2b5, b62e3db8cdc1680e1c3390591e872f485148541a

Exploitation evidence

Disclosed: evidence found.
CVE published 23 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-69cp-rcr3-v67w

What to do

Upgrade Linux kernel to f469d850854101eae60dd4080244f114a9bcf2b5 or b62e3db8cdc1680e1c3390591e872f485148541a.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 17805a15d1751f5d6bb06f924f9bed216feb8db7, < f469d850854101eae60dd4080244f114a9bcf2b5	Fixed in f469d850854101eae60dd4080244f114a9bcf2b5
LinuxLinux	Affected ≥ 17805a15d1751f5d6bb06f924f9bed216feb8db7, < b62e3db8cdc1680e1c3390591e872f485148541a	Fixed in b62e3db8cdc1680e1c3390591e872f485148541a
LinuxLinux	Affected =6.19	Fixed in–

AI-suggested

A fix has been implemented in the Linux kernel to ensure list operations in drm_bridge_add() are performed under the bridge_lock. Users should apply the official kernel update containing this fix once available. No additional mitigation steps are indicated.

Description

A vulnerability in the Linux kernel's drm_bridge_add() function was resolved. The issue involved modifying linked lists without holding the required bridge_lock, potentially causing list corruption when re-adding a previously removed bridge. This could affect the stability of the drm bridge subsystem.

Impact

Improper locking during list operations can lead to corruption of internal kernel data structures managing drm bridges. This may cause system instability or crashes related to the graphics subsystem. No direct exploit or code execution impact is reported.

Summary

The Linux kernel vulnerability (CVE-2026-98973) concerns the drm/bridge component where drm_bridge_add() removes an entry from bridge_lingering_list without holding the bridge_lock. Both bridge_list and bridge_lingering_list are protected by bridge_lock due to concurrent modifications by drm_bridge_remove() and __drm_bridge_free(), and are accessed by debugfs. Performing list_empty() and list_del_init() outside the lock can corrupt these lists. The fix ensures these operations occur while holding bridge_lock to maintain list integrity.

References

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