VulnerabilityPublished 18 Oct 2026

CVE-2026-98691: Linux kernel · thunderbolt: Tear down inactive DP tunnels when the domain is stopped

Source GCVE Database

Authoritative record:CVE-2026-98691· Medium

Not known to be exploited · fixed in cbd2abb85ea32cafdcbaba218e13b18d8ed79bfa : update Linux kernel 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 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in cbd2abb85ea32cafdcbaba218e13b18d8ed79bfa, 34a6e27c954e5bfc29fead17867c7155d54b6481, 0b457c6733f73421a3fb03786f13d67c618b5119

Exploitation evidence

Disclosed: evidence found.
CVE published 18 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-7w6x-49rw-4c9g

What to do

Upgrade Linux kernel to cbd2abb85ea32cafdcbaba218e13b18d8ed79bfa, 34a6e27c954e5bfc29fead17867c7155d54b6481 or 0b457c6733f73421a3fb03786f13d67c618b5119.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ d6d458d42e1e1544a18f37f1d5c840e00d5261b9, < cbd2abb85ea32cafdcbaba218e13b18d8ed79bfa	Fixed in cbd2abb85ea32cafdcbaba218e13b18d8ed79bfa
LinuxLinux	Affected ≥ d6d458d42e1e1544a18f37f1d5c840e00d5261b9, < 34a6e27c954e5bfc29fead17867c7155d54b6481	Fixed in 34a6e27c954e5bfc29fead17867c7155d54b6481
LinuxLinux	Affected ≥ d6d458d42e1e1544a18f37f1d5c840e00d5261b9, < 0b457c6733f73421a3fb03786f13d67c618b5119	Fixed in 0b457c6733f73421a3fb03786f13d67c618b5119
LinuxLinux	Affected =6.14	Fixed in–

AI-suggested

A fix has been implemented in the Linux kernel to properly tear down inactive DP tunnels when the domain is stopped, canceling queued work and preventing callbacks on torn down domains. Users should update to the fixed kernel version once available. No additional mitigation steps are indicated.

Description

A vulnerability in the Linux kernel's Thunderbolt driver was resolved involving improper teardown of inactive DisplayPort (DP) tunnels when the domain is stopped. The function tb_stop() only tore down DMA tunnels, leaving DP tunnels waiting for completion work queued, which could cause operations to run against a domain already torn down. The fix ensures that inactive DP tunnels are also torn down, canceling queued work and preventing potential issues. Active tunnels for live displays remain unaffected.

References

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