VulnerabilityPublished 18 Oct 2026

CVE-2026-98694: Linux kernel · thunderbolt: Fix KASAN reported use-after-free when request is canceled

Source GCVE Database

Authoritative record:CVE-2026-98694

Not known to be exploited · fixed in f18faa3d3b810d60a3005ae1b1d1866faa67d343 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:05 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 f18faa3d3b810d60a3005ae1b1d1866faa67d343, b70b9c41f240c42bf6e728034537c0fe60c16ef4, a02188ddc24b7872f0c5e0c5873f827318717803 +2

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-vpmx-4vx6-75fp

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ d7f781bfdbf4eb7c5706c9974b8bf6d3c82e69c1, < f18faa3d3b810d60a3005ae1b1d1866faa67d343	Fixed in f18faa3d3b810d60a3005ae1b1d1866faa67d343
LinuxLinux	Affected ≥ d7f781bfdbf4eb7c5706c9974b8bf6d3c82e69c1, < b70b9c41f240c42bf6e728034537c0fe60c16ef4	Fixed in b70b9c41f240c42bf6e728034537c0fe60c16ef4
LinuxLinux	Affected ≥ d7f781bfdbf4eb7c5706c9974b8bf6d3c82e69c1, < a02188ddc24b7872f0c5e0c5873f827318717803	Fixed in a02188ddc24b7872f0c5e0c5873f827318717803
LinuxLinux	Affected ≥ d7f781bfdbf4eb7c5706c9974b8bf6d3c82e69c1, < 08287212b622039212c972806f896f078dfd28e2	Fixed in 08287212b622039212c972806f896f078dfd28e2
LinuxLinux	Affected ≥ d7f781bfdbf4eb7c5706c9974b8bf6d3c82e69c1, < 71b3c517e02af2c46ad58d4b3706b7c3cb24936d	Fixed in 71b3c517e02af2c46ad58d4b3706b7c3cb24936d
LinuxLinux	Affected =4.13	Fixed in–

AI-suggested

A fix has been implemented in the Linux kernel to address this use-after-free issue in the thunderbolt driver. Users and administrators should update to the fixed kernel version once it is released. Patch status is not explicitly confirmed in the provided data; therefore, check the official Linux kernel advisories or vendor updates for the specific patch and remediation guidance.

Description

A use-after-free vulnerability in the Linux kernel's thunderbolt driver was identified and fixed. The issue occurs when a request is canceled, leading to a potential use of freed memory during control channel operations. The fix ensures that canceled requests are not rescheduled and that cleanup occurs immediately after canceling work, preventing access to released memory.

References

Community reviews

Loading reviews…