{"id":"CVE-2023-53016","state":"PUBLISHED","title":"Bluetooth: Fix possible deadlock in rfcomm_sk_state_change","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: Fix possible deadlock in rfcomm_sk_state_change\n\nsyzbot reports a possible deadlock in rfcomm_sk_state_change [1].\nWhile rfcomm_sock_connect acquires the sk lock and waits for\nthe rfcomm lock, rfcomm_sock_release could have the rfcomm\nlock and hit a deadlock for acquiring the sk lock.\nHere's a simplified flow:\n\nrfcomm_sock_connect:\n  lock_sock(sk)\n  rfcomm_dlc_open:\n    rfcomm_lock()\n\nrfcomm_sock_release:\n  rfcomm_sock_shutdown:\n    rfcomm_lock()\n    __rfcomm_dlc_close:\n        rfcomm_k_state_change:\n\t  lock_sock(sk)\n\nThis patch drops the sk lock before calling rfcomm_dlc_open to\navoid the possible deadlock and holds sk's reference count to\nprevent use-after-free after rfcomm_dlc_open completes.","publishedAt":"2025-03-27T16:43:44.528Z","updatedAt":"2026-05-11T19:36:58.226Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1804fdf6e494e5e2938c65d8391690b59bcff897","status":"affected","lessThan":"98aec50ff7f60cc6f2d6a4396b475c547e58b04d","versionType":"git"},{"version":"1804fdf6e494e5e2938c65d8391690b59bcff897","status":"affected","lessThan":"17511bd84871f4a6106cb335616e086880313f3f","versionType":"git"},{"version":"1804fdf6e494e5e2938c65d8391690b59bcff897","status":"affected","lessThan":"1d80d57ffcb55488f0ec0b77928d4f82d16b6a90","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/rfcomm/sock.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.91","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.9","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/rfcomm/sock.c"]}],"references":["https://git.kernel.org/stable/c/98aec50ff7f60cc6f2d6a4396b475c547e58b04d","https://git.kernel.org/stable/c/17511bd84871f4a6106cb335616e086880313f3f","https://git.kernel.org/stable/c/1d80d57ffcb55488f0ec0b77928d4f82d16b6a90"],"weaknesses":["CWE-667"],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53016.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53016","state":"PUBLISHED","datePublished":"2025-03-27T16:43:44.528Z","dateUpdated":"2026-05-11T19:36:58.226Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-03-27T16:40:15.750Z"},"containers":{"cna":{"title":"Bluetooth: Fix possible deadlock in rfcomm_sk_state_change","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: Fix possible deadlock in rfcomm_sk_state_change\n\nsyzbot reports a possible deadlock in rfcomm_sk_state_change [1].\nWhile rfcomm_sock_connect acquires the sk lock and waits for\nthe rfcomm lock, rfcomm_sock_release could have the rfcomm\nlock and hit a deadlock for acquiring the sk lock.\nHere's a simplified flow:\n\nrfcomm_sock_connect:\n  lock_sock(sk)\n  rfcomm_dlc_open:\n    rfcomm_lock()\n\nrfcomm_sock_release:\n  rfcomm_sock_shutdown:\n    rfcomm_lock()\n    __rfcomm_dlc_close:\n        rfcomm_k_state_change:\n\t  lock_sock(sk)\n\nThis patch drops the sk lock before calling rfcomm_dlc_open to\navoid the possible deadlock and holds sk's reference count to\nprevent use-after-free after rfcomm_dlc_open completes."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1804fdf6e494e5e2938c65d8391690b59bcff897","status":"affected","lessThan":"98aec50ff7f60cc6f2d6a4396b475c547e58b04d","versionType":"git"},{"version":"1804fdf6e494e5e2938c65d8391690b59bcff897","status":"affected","lessThan":"17511bd84871f4a6106cb335616e086880313f3f","versionType":"git"},{"version":"1804fdf6e494e5e2938c65d8391690b59bcff897","status":"affected","lessThan":"1d80d57ffcb55488f0ec0b77928d4f82d16b6a90","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/rfcomm/sock.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.91","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.9","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/rfcomm/sock.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/98aec50ff7f60cc6f2d6a4396b475c547e58b04d"},{"url":"https://git.kernel.org/stable/c/17511bd84871f4a6106cb335616e086880313f3f"},{"url":"https://git.kernel.org/stable/c/1d80d57ffcb55488f0ec0b77928d4f82d16b6a90"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:36:58.226Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"5.15.91"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-10-01T17:20:21.041847Z","id":"CVE-2023-53016","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-667","type":"CWE","lang":"en","description":"CWE-667 Improper Locking"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T17:20:23.878Z"}}]}}}