{"id":"CVE-2026-46267","summary":"nfc: hci: shdlc: Stop timers and work before freeing context","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: hci: shdlc: Stop timers and work before freeing context\n\nllc_shdlc_deinit() purges SHDLC skb queues and frees the llc_shdlc\nstructure while its timers and state machine work may still be active.\n\nTimer callbacks can schedule sm_work, and sm_work accesses SHDLC state\nand the skb queues. If teardown happens in parallel with a queued/running\nwork item, it can lead to UAF and other shutdown races.\n\nStop all SHDLC timers and cancel sm_work synchronously before purging the\nqueues and freeing the context.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE.","modified":"2026-06-18T03:56:11.785767669Z","published":"2026-06-03T15:50:09.035Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46267.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1cb97b1225450af3f7b728777929ba50c6a58ced"},{"type":"WEB","url":"https://git.kernel.org/stable/c/276820278e9717cc7d4bb32381892dd3ddf418d4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/77eef9f2eef045c3c37a3df82d3e661afb866b98"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a24a676329d40481b2331bfa1418a679577dfd3a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c60f41022eaad2a1dafecd3ae6f249a3bd6d4b6e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c9efde1e537baed7648a94022b43836a348a074f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cf70cedce327833296ebe6043364d1e44b76a2ab"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46267.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46267"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4a61cd6687fc6348d08724676d34e38160d6cf9b"},{"fixed":"c60f41022eaad2a1dafecd3ae6f249a3bd6d4b6e"},{"fixed":"a24a676329d40481b2331bfa1418a679577dfd3a"},{"fixed":"77eef9f2eef045c3c37a3df82d3e661afb866b98"},{"fixed":"cf70cedce327833296ebe6043364d1e44b76a2ab"},{"fixed":"276820278e9717cc7d4bb32381892dd3ddf418d4"},{"fixed":"1cb97b1225450af3f7b728777929ba50c6a58ced"},{"fixed":"c9efde1e537baed7648a94022b43836a348a074f"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46267.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.7.0"},{"fixed":"5.15.202"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.165"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.128"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.75"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.14"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46267.json"}}],"schema_version":"1.7.5"}