thunderbolt: Make the DP tunnel activation callback mandatory
Severity and exploitation
KEV coverage does not rule out exploitation.
Severity
unknownCVSS measures technical severity, not the likelihood of an attack.
Known exploitation
Not listed in the checked CISA KEV catalog
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Public exploit
Not established by this record
Missing evidence does not mean no public exploit exists.
Remediation
Fix status not established
No structured fix or guidance is available here. Check the latest publisher advisory.
What this means
In the Linux kernel, the following vulnerability has been resolved:
Source excerpt · LinuxAttack conditions
No attack-condition excerpt has been identified here. Review the full source description and references for authentication, network access, and configuration requirements.
Review supporting sources →Affected versions
Check the exact model, release, and any platform requirements against your installation.
Linux · Linux
Linux
3 ranges
Linux · Linux
Linux
Compare with this publisher’s ranges. This does not inspect your installation.
affected
d6d458d42e1e1544a18f37f1d5c840e00d5261b9 → before 39a2c4e5e606cf49b83595971b449b3fb80743c6
git versions
d6d458d42e1e1544a18f37f1d5c840e00d5261b9 → before 47d60ea801fc333a10c576691eca2e7840b02d3d
git versions
d6d458d42e1e1544a18f37f1d5c840e00d5261b9 → before 12f5d8b85a66a0ac08d082517d92ce136f8c0d42
git versions
Other versions: unaffected
Linux · Linux
Linux
5 ranges
Linux · Linux
Linux
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affected
6.14
unaffected
0 → before 6.14
semver versions
6.18.61 → through 6.18.*
semver versions
7.2.10 → through 7.2.*
semver versions
7.3 → through *
original_commit_for_fix versions
Other versions: affected
What to do
Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.
No structured fix or remediation guidance is available here. Check the full source description and vendor’s latest advisory for a patch or workaround; do not assume another version is safe.
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Public exploit evidence
No public exploit reference is identified in the imported evidence. This is not a claim that no exploit exists.
Original source description
Read the full publisher description
In the Linux kernel, the following vulnerability has been resolved:
thunderbolt: Make the DP tunnel activation callback mandatory
tb_tunnel_alloc_dp() takes an optional callback which is run from dprx_work once the DPRX capabilities read has completed. Without that callback tb_dp_dprx_start() reads the capabilities synchronously and never queues the work. It however always takes a tunnel reference which is only dropped by dprx_work itself or by tb_dp_dprx_stop() when cancel_delayed_work() actually canceled that work. That reference is thus leaked for every tunnel without a callback.
The only tunnels without one are those from tb_tunnel_discover_dp(), which are activated again when restoring from hibernation. Pass the callback to tb_tunnel_discover_dp() as well and drop the synchronous path such that the DPRX capabilities are always read from dprx_work. Hibernation restore then also no longer blocks for up to 12 seconds while waiting for that read to complete.
Also fix up the KUnit tests.
References
3 sourcesInside the record
Evidence available
Describes the evidence in this view, not whether the product is safe.
Original records
CVE-2026-98692View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.
cve.new JSON →Environment requirements
These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.
Linux · platform conditions
Any condition may hold
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 6.14
Before: 6.18.61
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 6.14
Before: 7.2.10
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 6.14
Before: 7.3
Applicability preview
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]Contributing organizations · 1
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What changed
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