thunderbolt: Fix domain reference leak when DPRX read is canceled
In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Fix domain reference leak when DPRX read is canceled tb_tunnel_one_dp() takes a domain reference which is only dropped once tb_dp_tunnel_active() has run on the work queue. If that work is cancelled that reference is leaked. Since commit f5cc545f5969 ("thunderbolt: Wait for tb_domain_release() to complete when driver is removed") instead of just leaking memory this now also blocks in the completion wait forever when unbinding the driver. This can be triggered whenever a DP tunnel is torn down before the DPRX read has completed, e.g. by unplugging within the timeout, and then unbinding the driver. That reference only exists to keep the domain around while the DPRX work is scheduled so let the work itself own it: take it in tb_dp_dprx_start() and drop it in both places that end the work. Get/put are then paired inside the same file and it doesn't matter anymore if the callback ever runs.
CVE-2026-98690
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98690
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "d6d458d42e1e1544a18f37f1d5c840e00d5261b9",
"lessThan": "2f5893172fc6153f5f1ef34014ddbfcbf1f47f29",
"versionType": "git"
},
{
"status": "affected",
"version": "d6d458d42e1e1544a18f37f1d5c840e00d5261b9",
"lessThan": "7739b02129b2248f9a8054cfda924fa253f66a88",
"versionType": "git"
},
{
"status": "affected",
"version": "d6d458d42e1e1544a18f37f1d5c840e00d5261b9",
"lessThan": "1fd1f67c94d30889377bba774f032ec15e8b9299",
"versionType": "git"
}
],
"programFiles": [
"drivers/thunderbolt/tb.c",
"drivers/thunderbolt/tunnel.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.14"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.14",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.56",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.10",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/thunderbolt/tb.c",
"drivers/thunderbolt/tunnel.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98690
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38689 · Revision 1
- Added to Heist Feed
- Publisher date