{"api_version":"1","generated_at":"2026-06-04T13:01:11+00:00","cve":"CVE-2026-46267","urls":{"html":"https://cve.report/CVE-2026-46267","api":"https://cve.report/api/cve/CVE-2026-46267.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46267","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46267"},"summary":{"title":"nfc: hci: shdlc: Stop timers and work before freeing context","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-03 18:16:28","updated_at":"2026-06-03 18:16:28"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/cf70cedce327833296ebe6043364d1e44b76a2ab","name":"https://git.kernel.org/stable/c/cf70cedce327833296ebe6043364d1e44b76a2ab","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a24a676329d40481b2331bfa1418a679577dfd3a","name":"https://git.kernel.org/stable/c/a24a676329d40481b2331bfa1418a679577dfd3a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1cb97b1225450af3f7b728777929ba50c6a58ced","name":"https://git.kernel.org/stable/c/1cb97b1225450af3f7b728777929ba50c6a58ced","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c9efde1e537baed7648a94022b43836a348a074f","name":"https://git.kernel.org/stable/c/c9efde1e537baed7648a94022b43836a348a074f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c60f41022eaad2a1dafecd3ae6f249a3bd6d4b6e","name":"https://git.kernel.org/stable/c/c60f41022eaad2a1dafecd3ae6f249a3bd6d4b6e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/77eef9f2eef045c3c37a3df82d3e661afb866b98","name":"https://git.kernel.org/stable/c/77eef9f2eef045c3c37a3df82d3e661afb866b98","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/276820278e9717cc7d4bb32381892dd3ddf418d4","name":"https://git.kernel.org/stable/c/276820278e9717cc7d4bb32381892dd3ddf418d4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46267","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46267","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4a61cd6687fc6348d08724676d34e38160d6cf9b c60f41022eaad2a1dafecd3ae6f249a3bd6d4b6e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4a61cd6687fc6348d08724676d34e38160d6cf9b a24a676329d40481b2331bfa1418a679577dfd3a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4a61cd6687fc6348d08724676d34e38160d6cf9b 77eef9f2eef045c3c37a3df82d3e661afb866b98 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4a61cd6687fc6348d08724676d34e38160d6cf9b cf70cedce327833296ebe6043364d1e44b76a2ab git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.75 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.14 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.4 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/nfc/hci/llc_shdlc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c60f41022eaad2a1dafecd3ae6f249a3bd6d4b6e","status":"affected","version":"4a61cd6687fc6348d08724676d34e38160d6cf9b","versionType":"git"},{"lessThan":"a24a676329d40481b2331bfa1418a679577dfd3a","status":"affected","version":"4a61cd6687fc6348d08724676d34e38160d6cf9b","versionType":"git"},{"lessThan":"77eef9f2eef045c3c37a3df82d3e661afb866b98","status":"affected","version":"4a61cd6687fc6348d08724676d34e38160d6cf9b","versionType":"git"},{"lessThan":"cf70cedce327833296ebe6043364d1e44b76a2ab","status":"affected","version":"4a61cd6687fc6348d08724676d34e38160d6cf9b","versionType":"git"},{"lessThan":"276820278e9717cc7d4bb32381892dd3ddf418d4","status":"affected","version":"4a61cd6687fc6348d08724676d34e38160d6cf9b","versionType":"git"},{"lessThan":"1cb97b1225450af3f7b728777929ba50c6a58ced","status":"affected","version":"4a61cd6687fc6348d08724676d34e38160d6cf9b","versionType":"git"},{"lessThan":"c9efde1e537baed7648a94022b43836a348a074f","status":"affected","version":"4a61cd6687fc6348d08724676d34e38160d6cf9b","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/nfc/hci/llc_shdlc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.7"},{"lessThan":"3.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.202","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.165","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.128","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.75","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.14","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.202","versionStartIncluding":"3.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.165","versionStartIncluding":"3.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.128","versionStartIncluding":"3.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.75","versionStartIncluding":"3.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.14","versionStartIncluding":"3.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.4","versionStartIncluding":"3.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"3.7","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-06-03T15:50:09.035Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/c60f41022eaad2a1dafecd3ae6f249a3bd6d4b6e"},{"url":"https://git.kernel.org/stable/c/a24a676329d40481b2331bfa1418a679577dfd3a"},{"url":"https://git.kernel.org/stable/c/77eef9f2eef045c3c37a3df82d3e661afb866b98"},{"url":"https://git.kernel.org/stable/c/cf70cedce327833296ebe6043364d1e44b76a2ab"},{"url":"https://git.kernel.org/stable/c/276820278e9717cc7d4bb32381892dd3ddf418d4"},{"url":"https://git.kernel.org/stable/c/1cb97b1225450af3f7b728777929ba50c6a58ced"},{"url":"https://git.kernel.org/stable/c/c9efde1e537baed7648a94022b43836a348a074f"}],"title":"nfc: hci: shdlc: Stop timers and work before freeing context","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46267","datePublished":"2026-06-03T15:50:09.035Z","dateReserved":"2026-05-13T15:03:33.108Z","dateUpdated":"2026-06-03T15:50:09.035Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-03 18:16:28","lastModifiedDate":"2026-06-03 18:16:28","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46267","Ordinal":"1","Title":"nfc: hci: shdlc: Stop timers and work before freeing context","CVE":"CVE-2026-46267","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46267","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"nfc: hci: shdlc: Stop timers and work before freeing context"}]}}}