net: thunderbolt: Release the Rx HopID that was handed out on mismatch

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-80990
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-11 20:19:05 UTC
Updated2026-09-11 20:19:05 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: net: thunderbolt: Release the Rx HopID that was handed out on mismatch tb_xdomain_alloc_in_hopid() passes the wanted HopID to ida_alloc_range() as the lower bound, so a taken id is not an error there: the allocator returns the next free one above it. tbnet_connected_work() asks for the peer's transmit path, treats any other id as a failure and returns without releasing what it got, so that allocation stays live for the rest of the XDomain connection with nothing left holding a reference to it. Release the id when it is not the one we asked for, the same way the error unwind at the end of the function releases the expected one.

Risk And Classification

EPSS: 0.002000000 probability, percentile 0.099350000 (date 2026-09-13)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 180b0689425c6fb2b35e69a3316ee38371a782df 9eac1817bfc5fa76e3a2d1b8fd824cc6ef5a9ab0 git Not specified
CNA Linux Linux affected 180b0689425c6fb2b35e69a3316ee38371a782df 61ff3c353e5d2ff4eb9d0b6d8d9e47805b136eea git Not specified
CNA Linux Linux affected 180b0689425c6fb2b35e69a3316ee38371a782df 1c361f6cf39be7cc0ce37c0b67bd1cdf74b0a0c1 git Not specified
CNA Linux Linux affected 180b0689425c6fb2b35e69a3316ee38371a782df 2f1463554d0561a2fead81e3888604e5c1125e29 git Not specified
CNA Linux Linux affected 5.13 Not specified
CNA Linux Linux unaffected 5.13 semver Not specified
CNA Linux Linux unaffected 6.12.109 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.50 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.4 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/61ff3c353e5d2ff4eb9d0b6d8d9e47805b136eea 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1c361f6cf39be7cc0ce37c0b67bd1cdf74b0a0c1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9eac1817bfc5fa76e3a2d1b8fd824cc6ef5a9ab0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2f1463554d0561a2fead81e3888604e5c1125e29 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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