thunderbolt: Tear down inactive DP tunnels when the domain is stopped

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Summary

CVECVE-2026-98691
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-18 16:17:22 UTC
Updated2026-10-19 10:19:33 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: thunderbolt: Tear down inactive DP tunnels when the domain is stopped tb_stop() only tears down DMA tunnels so a DP tunnel that is still waiting for dprx_work to complete keeps that work queued while the routers are removed and the control channel is stopped. The work only stops once the DPRX timeout has passed and because it requeues itself until then the flush_workqueue() in tb_domain_remove() won't wait for its final run. The callback then runs against a domain that is already torn down. A reference to that domain is kept so the completion waiting for that domain to disappear in unbind will block until the timeout is eventually reached. Tear down DP tunnels that are not active yet as well which also cancels that work. Tunnels for displays that are already alive are untouched and keep working.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected d6d458d42e1e1544a18f37f1d5c840e00d5261b9 34a6e27c954e5bfc29fead17867c7155d54b6481 git Not specified
CNA Linux Linux affected d6d458d42e1e1544a18f37f1d5c840e00d5261b9 cbd2abb85ea32cafdcbaba218e13b18d8ed79bfa git Not specified
CNA Linux Linux affected d6d458d42e1e1544a18f37f1d5c840e00d5261b9 0b457c6733f73421a3fb03786f13d67c618b5119 git Not specified
CNA Linux Linux affected 6.14 Not specified
CNA Linux Linux unaffected 6.14 semver Not specified
CNA Linux Linux unaffected 6.18.56 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.10 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/cbd2abb85ea32cafdcbaba218e13b18d8ed79bfa 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/34a6e27c954e5bfc29fead17867c7155d54b6481 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0b457c6733f73421a3fb03786f13d67c618b5119 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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