CVE-2026-46267 (GCVE-0-2026-46267)

Vulnerability from cvelistv5 – Published: 2026-06-03 15:50 – Updated: 2026-06-03 15:50
VLAI
Title
nfc: hci: shdlc: Stop timers and work before freeing context
Summary
In the Linux kernel, the following vulnerability has been resolved: nfc: hci: shdlc: Stop timers and work before freeing context llc_shdlc_deinit() purges SHDLC skb queues and frees the llc_shdlc structure while its timers and state machine work may still be active. Timer callbacks can schedule sm_work, and sm_work accesses SHDLC state and the skb queues. If teardown happens in parallel with a queued/running work item, it can lead to UAF and other shutdown races. Stop all SHDLC timers and cancel sm_work synchronously before purging the queues and freeing the context. Found by Linux Verification Center (linuxtesting.org) with SVACE.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 4a61cd6687fc6348d08724676d34e38160d6cf9b , < c60f41022eaad2a1dafecd3ae6f249a3bd6d4b6e (git)
Affected: 4a61cd6687fc6348d08724676d34e38160d6cf9b , < a24a676329d40481b2331bfa1418a679577dfd3a (git)
Affected: 4a61cd6687fc6348d08724676d34e38160d6cf9b , < 77eef9f2eef045c3c37a3df82d3e661afb866b98 (git)
Affected: 4a61cd6687fc6348d08724676d34e38160d6cf9b , < cf70cedce327833296ebe6043364d1e44b76a2ab (git)
Affected: 4a61cd6687fc6348d08724676d34e38160d6cf9b , < 276820278e9717cc7d4bb32381892dd3ddf418d4 (git)
Affected: 4a61cd6687fc6348d08724676d34e38160d6cf9b , < 1cb97b1225450af3f7b728777929ba50c6a58ced (git)
Affected: 4a61cd6687fc6348d08724676d34e38160d6cf9b , < c9efde1e537baed7648a94022b43836a348a074f (git)
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Linux Linux Affected: 3.7
Unaffected: 0 , < 3.7 (semver)
Unaffected: 5.15.202 , ≤ 5.15.* (semver)
Unaffected: 6.1.165 , ≤ 6.1.* (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.14 , ≤ 6.18.* (semver)
Unaffected: 6.19.4 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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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.