CVE-2026-46267 | 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
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.
- 🔗 git.kernel.org/stable/c/c60f41022eaad2a1dafecd3ae6f249a3…
- 🔗 git.kernel.org/stable/c/a24a676329d40481b2331bfa1418a679…
- 🔗 git.kernel.org/stable/c/77eef9f2eef045c3c37a3df82d3e661a…
- 🔗 git.kernel.org/stable/c/cf70cedce327833296ebe6043364d1e4…
- 🔗 git.kernel.org/stable/c/276820278e9717cc7d4bb32381892dd3…
- 🔗 git.kernel.org/stable/c/1cb97b1225450af3f7b728777929ba50…
- 🔗 git.kernel.org/stable/c/c9efde1e537baed7648a94022b43836a…
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CVE-2026-46267 | 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
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 machi