CVE-2026-89737usb: typec: thunderbolt: Disable work before freeing tbt on remove
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: usb: typec: thunderbolt: Disable work before freeing tbt on remove tbt_altmode_remove() drops the plug and cable references without draining tbt->work. The work function dereferences those references, and can also requeue itself in its error path. The VDM callbacks can queue the same work item. Disable and drain tbt->work before dropping the references. This waits for an existing invocation and prevents subsequent schedule_work() calls from queueing it during teardown. This issue was found by an in-house static analysis tool and confirmed by manual code review.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 100e257386595b3f1865ca8a991e2ba74f9701ff before ebb840d982a612261cfc8a7687735a140c6c7024; 100e257386595b3f1865ca8a991e2ba74f9701ff builds before 0a25484fe22f621e151367a59a82330a22ac80bc; from 100e257386595b3f1865ca8a991e2ba74f9701ff before 92090f6ff2acc81e9dd99881dcfb4f8c1bdaabd3 | CNA record |
References
- https://git.kernel.org/stable/c/ebb840d982a612261cfc8a7687735a140c6c7024
- https://git.kernel.org/stable/c/0a25484fe22f621e151367a59a82330a22ac80bc
- https://git.kernel.org/stable/c/92090f6ff2acc81e9dd99881dcfb4f8c1bdaabd3
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.