{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53358","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-06-09T07:44:35.400Z","datePublished":"2026-07-02T13:43:17.630Z","dateUpdated":"2026-07-02T13:43:17.630Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-07-02T13:43:17.630Z"},"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/l2cap_sock.c"],"versions":[{"version":"3df91ea20e744344100b10ae69a17211fcf5b207","lessThan":"3634cbdc2eb414b69ffa752ddbe5e0458518e321","status":"affected","versionType":"git"},{"version":"3df91ea20e744344100b10ae69a17211fcf5b207","lessThan":"e1c100e2d61bd8c718b7d91fe3e050780a9bf72d","status":"affected","versionType":"git"},{"version":"3df91ea20e744344100b10ae69a17211fcf5b207","lessThan":"deb8493a8fa599f6c95e2465b12bfdfb7f94a1d9","status":"affected","versionType":"git"},{"version":"3df91ea20e744344100b10ae69a17211fcf5b207","lessThan":"89dec92041717b027216e110599e4f6d6c921b79","status":"affected","versionType":"git"},{"version":"3df91ea20e744344100b10ae69a17211fcf5b207","lessThan":"50dfec218808b148ab4247b1858031b7a32015c5","status":"affected","versionType":"git"},{"version":"3df91ea20e744344100b10ae69a17211fcf5b207","lessThan":"859d3ace791ed878ae9ba5522c7844d960da8f88","status":"affected","versionType":"git"},{"version":"3df91ea20e744344100b10ae69a17211fcf5b207","lessThan":"7555fd885a0603f50e49a655850a1f2bd8a25398","status":"affected","versionType":"git"},{"version":"3df91ea20e744344100b10ae69a17211fcf5b207","lessThan":"8c8e620467a7b51562dbcefbd1f09f288d7d710d","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/l2cap_sock.c"],"versions":[{"version":"3.4","status":"affected"},{"version":"0","lessThan":"3.4","status":"unaffected","versionType":"semver"},{"version":"5.10.259","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.210","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.176","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.143","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.93","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.35","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.12","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"5.10.259"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"5.15.210"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.1.176"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.6.143"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.12.93"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.18.35"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"7.0.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"7.1"}]}]}],"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"}}}}