{"api_version":"1","generated_at":"2026-07-03T13:32:42+00:00","cve":"CVE-2026-53358","urls":{"html":"https://cve.report/CVE-2026-53358","api":"https://cve.report/api/cve/CVE-2026-53358.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53358","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53358"},"summary":{"title":"Bluetooth: L2CAP: use chan timer to close channels in cleanup_listen()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: use chan timer to close channels in cleanup_listen()\n\nl2cap_chan_close() removes the channel from conn->chan_l, which\nmust be done under conn->lock.  cleanup_listen() runs under the\nparent sk_lock, so acquiring conn->lock would invert the\nestablished conn->lock -> chan->lock -> sk_lock order.\n\nInstead of calling l2cap_chan_close() directly, schedule\nl2cap_chan_timeout with delay 0 to close the channel\nasynchronously.  The timeout handler already acquires conn->lock\nand chan->lock in the correct order.\n\nThe timer is only armed when chan->conn is still set: if it is\nalready NULL, l2cap_conn_del() has already processed this channel\n(l2cap_chan_del + l2cap_sock_teardown_cb + l2cap_sock_close_cb),\nso there is nothing left to do.  If l2cap_conn_del() races in\nafter the timer is armed, __clear_chan_timer() inside\nl2cap_chan_del() cancels it; if the timer has already fired, the\nhandler returns harmlessly because chan->conn was cleared.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-02 15:17:03","updated_at":"2026-07-02 15:17:03"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/89dec92041717b027216e110599e4f6d6c921b79","name":"https://git.kernel.org/stable/c/89dec92041717b027216e110599e4f6d6c921b79","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8c8e620467a7b51562dbcefbd1f09f288d7d710d","name":"https://git.kernel.org/stable/c/8c8e620467a7b51562dbcefbd1f09f288d7d710d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e1c100e2d61bd8c718b7d91fe3e050780a9bf72d","name":"https://git.kernel.org/stable/c/e1c100e2d61bd8c718b7d91fe3e050780a9bf72d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7555fd885a0603f50e49a655850a1f2bd8a25398","name":"https://git.kernel.org/stable/c/7555fd885a0603f50e49a655850a1f2bd8a25398","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/859d3ace791ed878ae9ba5522c7844d960da8f88","name":"https://git.kernel.org/stable/c/859d3ace791ed878ae9ba5522c7844d960da8f88","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3634cbdc2eb414b69ffa752ddbe5e0458518e321","name":"https://git.kernel.org/stable/c/3634cbdc2eb414b69ffa752ddbe5e0458518e321","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/50dfec218808b148ab4247b1858031b7a32015c5","name":"https://git.kernel.org/stable/c/50dfec218808b148ab4247b1858031b7a32015c5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/deb8493a8fa599f6c95e2465b12bfdfb7f94a1d9","name":"https://git.kernel.org/stable/c/deb8493a8fa599f6c95e2465b12bfdfb7f94a1d9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53358","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53358","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3df91ea20e744344100b10ae69a17211fcf5b207 3634cbdc2eb414b69ffa752ddbe5e0458518e321 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3df91ea20e744344100b10ae69a17211fcf5b207 e1c100e2d61bd8c718b7d91fe3e050780a9bf72d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3df91ea20e744344100b10ae69a17211fcf5b207 deb8493a8fa599f6c95e2465b12bfdfb7f94a1d9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3df91ea20e744344100b10ae69a17211fcf5b207 89dec92041717b027216e110599e4f6d6c921b79 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3df91ea20e744344100b10ae69a17211fcf5b207 50dfec218808b148ab4247b1858031b7a32015c5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3df91ea20e744344100b10ae69a17211fcf5b207 859d3ace791ed878ae9ba5522c7844d960da8f88 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3df91ea20e744344100b10ae69a17211fcf5b207 7555fd885a0603f50e49a655850a1f2bd8a25398 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3df91ea20e744344100b10ae69a17211fcf5b207 8c8e620467a7b51562dbcefbd1f09f288d7d710d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.4","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.4 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.259 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.210 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.176 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.143 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.93 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.35 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.12 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * 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/bluetooth/l2cap_sock.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"3634cbdc2eb414b69ffa752ddbe5e0458518e321","status":"affected","version":"3df91ea20e744344100b10ae69a17211fcf5b207","versionType":"git"},{"lessThan":"e1c100e2d61bd8c718b7d91fe3e050780a9bf72d","status":"affected","version":"3df91ea20e744344100b10ae69a17211fcf5b207","versionType":"git"},{"lessThan":"deb8493a8fa599f6c95e2465b12bfdfb7f94a1d9","status":"affected","version":"3df91ea20e744344100b10ae69a17211fcf5b207","versionType":"git"},{"lessThan":"89dec92041717b027216e110599e4f6d6c921b79","status":"affected","version":"3df91ea20e744344100b10ae69a17211fcf5b207","versionType":"git"},{"lessThan":"50dfec218808b148ab4247b1858031b7a32015c5","status":"affected","version":"3df91ea20e744344100b10ae69a17211fcf5b207","versionType":"git"},{"lessThan":"859d3ace791ed878ae9ba5522c7844d960da8f88","status":"affected","version":"3df91ea20e744344100b10ae69a17211fcf5b207","versionType":"git"},{"lessThan":"7555fd885a0603f50e49a655850a1f2bd8a25398","status":"affected","version":"3df91ea20e744344100b10ae69a17211fcf5b207","versionType":"git"},{"lessThan":"8c8e620467a7b51562dbcefbd1f09f288d7d710d","status":"affected","version":"3df91ea20e744344100b10ae69a17211fcf5b207","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/bluetooth/l2cap_sock.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.4"},{"lessThan":"3.4","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.143","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.93","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.35","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.12","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.259","versionStartIncluding":"3.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.210","versionStartIncluding":"3.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.176","versionStartIncluding":"3.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.143","versionStartIncluding":"3.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.93","versionStartIncluding":"3.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.35","versionStartIncluding":"3.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.12","versionStartIncluding":"3.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"3.4","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: use chan timer to close channels in cleanup_listen()\n\nl2cap_chan_close() removes the channel from conn->chan_l, which\nmust be done under conn->lock.  cleanup_listen() runs under the\nparent sk_lock, so acquiring conn->lock would invert the\nestablished conn->lock -> chan->lock -> sk_lock order.\n\nInstead of calling l2cap_chan_close() directly, schedule\nl2cap_chan_timeout with delay 0 to close the channel\nasynchronously.  The timeout handler already acquires conn->lock\nand chan->lock in the correct order.\n\nThe timer is only armed when chan->conn is still set: if it is\nalready NULL, l2cap_conn_del() has already processed this channel\n(l2cap_chan_del + l2cap_sock_teardown_cb + l2cap_sock_close_cb),\nso there is nothing left to do.  If l2cap_conn_del() races in\nafter the timer is armed, __clear_chan_timer() inside\nl2cap_chan_del() cancels it; if the timer has already fired, the\nhandler returns harmlessly because chan->conn was cleared."}],"providerMetadata":{"dateUpdated":"2026-07-02T13:43:17.630Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/3634cbdc2eb414b69ffa752ddbe5e0458518e321"},{"url":"https://git.kernel.org/stable/c/e1c100e2d61bd8c718b7d91fe3e050780a9bf72d"},{"url":"https://git.kernel.org/stable/c/deb8493a8fa599f6c95e2465b12bfdfb7f94a1d9"},{"url":"https://git.kernel.org/stable/c/89dec92041717b027216e110599e4f6d6c921b79"},{"url":"https://git.kernel.org/stable/c/50dfec218808b148ab4247b1858031b7a32015c5"},{"url":"https://git.kernel.org/stable/c/859d3ace791ed878ae9ba5522c7844d960da8f88"},{"url":"https://git.kernel.org/stable/c/7555fd885a0603f50e49a655850a1f2bd8a25398"},{"url":"https://git.kernel.org/stable/c/8c8e620467a7b51562dbcefbd1f09f288d7d710d"}],"title":"Bluetooth: L2CAP: use chan timer to close channels in cleanup_listen()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-53358","datePublished":"2026-07-02T13:43:17.630Z","dateReserved":"2026-06-09T07:44:35.400Z","dateUpdated":"2026-07-02T13:43:17.630Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-02 15:17:03","lastModifiedDate":"2026-07-02 15:17:03","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"53358","Ordinal":"1","Title":"Bluetooth: L2CAP: use chan timer to close channels in cleanup_li","CVE":"CVE-2026-53358","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53358","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: use chan timer to close channels in cleanup_listen()\n\nl2cap_chan_close() removes the channel from conn->chan_l, which\nmust be done under conn->lock.  cleanup_listen() runs under the\nparent sk_lock, so acquiring conn->lock would invert the\nestablished conn->lock -> chan->lock -> sk_lock order.\n\nInstead of calling l2cap_chan_close() directly, schedule\nl2cap_chan_timeout with delay 0 to close the channel\nasynchronously.  The timeout handler already acquires conn->lock\nand chan->lock in the correct order.\n\nThe timer is only armed when chan->conn is still set: if it is\nalready NULL, l2cap_conn_del() has already processed this channel\n(l2cap_chan_del + l2cap_sock_teardown_cb + l2cap_sock_close_cb),\nso there is nothing left to do.  If l2cap_conn_del() races in\nafter the timer is armed, __clear_chan_timer() inside\nl2cap_chan_del() cancels it; if the timer has already fired, the\nhandler returns harmlessly because chan->conn was cleared.","Type":"Description","Title":"Bluetooth: L2CAP: use chan timer to close channels in cleanup_li"}]}}}