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 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 versions
Linux kernel versions
3.7
and later are affected. Fixed in
5.15.202,
6.1.165,
6.6.128,
6.12.75,
6.18.14,
6.19.4,
7.0
and their respective stable series.
References
The following references provide additional information about CVE-2026-46267 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/1cb97b1225450af3f7b728777929ba50c6a58ced
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PatchKernel patch commithttps://git.kernel.org/stable/c/276820278e9717cc7d4bb32381892dd3ddf418d4
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PatchKernel patch commithttps://git.kernel.org/stable/c/77eef9f2eef045c3c37a3df82d3e661afb866b98
Frequently asked questions
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What is CVE-2026-46267?
CVE-2026-46267 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.7 onward and has been patched in 5.15.202, 6.1.165, 6.6.128 and others. CVE-2026-46267 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-46267?
Yes — CVE-2026-46267 has been patched. Fixed versions include 5.15.202, 6.1.165, 6.6.128 and others. If you are running Linux kernel 3.7 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-46267 actively exploited?
No — CVE-2026-46267 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.