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CVE-2026-80990 (GCVE-0-2026-80990)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:42 – Updated: 2026-09-14 11:59
VLAI
Title
net: thunderbolt: Release the Rx HopID that was handed out on mismatch
Summary
In 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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 180b0689425c6fb2b35e69a3316ee38371a782df , < 47981eb66461ba4e74bbaea0f139adaaeb3991e9 (git)
Affected: 180b0689425c6fb2b35e69a3316ee38371a782df , < 9eac1817bfc5fa76e3a2d1b8fd824cc6ef5a9ab0 (git)
Affected: 180b0689425c6fb2b35e69a3316ee38371a782df , < 61ff3c353e5d2ff4eb9d0b6d8d9e47805b136eea (git)
Affected: 180b0689425c6fb2b35e69a3316ee38371a782df , < 1c361f6cf39be7cc0ce37c0b67bd1cdf74b0a0c1 (git)
Affected: 180b0689425c6fb2b35e69a3316ee38371a782df , < 2f1463554d0561a2fead81e3888604e5c1125e29 (git)
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Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.109 , ≤ 6.12.* (semver)
Unaffected: 6.18.50 , ≤ 6.18.* (semver)
Unaffected: 7.2.4 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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Show details on NVD website
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/net/thunderbolt/main.c"
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    "dateReserved": "2026-08-26T14:34:25.811Z",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.