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.
History

Tue, 09 Jun 2026 20:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


Thu, 04 Jun 2026 02:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416
CWE-636

Thu, 04 Jun 2026 00:15:00 +0000


Wed, 03 Jun 2026 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416
CWE-636

Wed, 03 Jun 2026 17:45:00 +0000

Type Values Removed Values Added
Description 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.
Title nfc: hci: shdlc: Stop timers and work before freeing context
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-06-03T15:50:09.035Z

Updated: 2026-06-03T15:50:09.035Z

Reserved: 2026-05-13T15:03:33.108Z

Link: CVE-2026-46267

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2026-06-03T18:16:28.320

Modified: 2026-06-09T19:48:21.260

Link: CVE-2026-46267

cve-icon Redhat

Severity :

Publid Date: 2026-06-03T00:00:00Z

Links: CVE-2026-46267 - Bugzilla