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CVE Vulnerability Details :
CVE-2026-46267
PUBLISHED
More InfoOfficial Page
Assigner-Linux
Assigner Org ID-416baaa9-dc9f-4396-8d5f-8c081fb06d67
View Known Exploited Vulnerability (KEV) details
Published At-03 Jun, 2026 | 15:50
Updated At-03 Jun, 2026 | 15:50
Rejected At-
▼CVE Numbering Authority (CNA)
nfc: hci: shdlc: Stop timers and work before freeing context

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.

Affected Products
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • net/nfc/hci/llc_shdlc.c
Default Status
unaffected
Versions
Affected
  • From 4a61cd6687fc6348d08724676d34e38160d6cf9b before c60f41022eaad2a1dafecd3ae6f249a3bd6d4b6e (git)
  • From 4a61cd6687fc6348d08724676d34e38160d6cf9b before a24a676329d40481b2331bfa1418a679577dfd3a (git)
  • From 4a61cd6687fc6348d08724676d34e38160d6cf9b before 77eef9f2eef045c3c37a3df82d3e661afb866b98 (git)
  • From 4a61cd6687fc6348d08724676d34e38160d6cf9b before cf70cedce327833296ebe6043364d1e44b76a2ab (git)
  • From 4a61cd6687fc6348d08724676d34e38160d6cf9b before 276820278e9717cc7d4bb32381892dd3ddf418d4 (git)
  • From 4a61cd6687fc6348d08724676d34e38160d6cf9b before 1cb97b1225450af3f7b728777929ba50c6a58ced (git)
  • From 4a61cd6687fc6348d08724676d34e38160d6cf9b before c9efde1e537baed7648a94022b43836a348a074f (git)
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • net/nfc/hci/llc_shdlc.c
Default Status
affected
Versions
Affected
  • 3.7
Unaffected
  • From 0 before 3.7 (semver)
  • From 5.15.202 through 5.15.* (semver)
  • From 6.1.165 through 6.1.* (semver)
  • From 6.6.128 through 6.6.* (semver)
  • From 6.12.75 through 6.12.* (semver)
  • From 6.18.14 through 6.18.* (semver)
  • From 6.19.4 through 6.19.* (semver)
  • From 7.0 through * (original_commit_for_fix)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://git.kernel.org/stable/c/c60f41022eaad2a1dafecd3ae6f249a3bd6d4b6e
N/A
https://git.kernel.org/stable/c/a24a676329d40481b2331bfa1418a679577dfd3a
N/A
https://git.kernel.org/stable/c/77eef9f2eef045c3c37a3df82d3e661afb866b98
N/A
https://git.kernel.org/stable/c/cf70cedce327833296ebe6043364d1e44b76a2ab
N/A
https://git.kernel.org/stable/c/276820278e9717cc7d4bb32381892dd3ddf418d4
N/A
https://git.kernel.org/stable/c/1cb97b1225450af3f7b728777929ba50c6a58ced
N/A
https://git.kernel.org/stable/c/c9efde1e537baed7648a94022b43836a348a074f
N/A
Hyperlink: https://git.kernel.org/stable/c/c60f41022eaad2a1dafecd3ae6f249a3bd6d4b6e
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/a24a676329d40481b2331bfa1418a679577dfd3a
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/77eef9f2eef045c3c37a3df82d3e661afb866b98
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/cf70cedce327833296ebe6043364d1e44b76a2ab
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/276820278e9717cc7d4bb32381892dd3ddf418d4
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/1cb97b1225450af3f7b728777929ba50c6a58ced
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/c9efde1e537baed7648a94022b43836a348a074f
Resource: N/A
Details not found