{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74536","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-15T05:44:03.913Z","datePublished":"2026-08-15T12:27:49.054Z","dateUpdated":"2026-08-17T05:21:20.361Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T05:21:20.361Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: fix leaking sk after socket release\n\niso_sock_kill() tests !sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket ||\nsock_flag(sk, SOCK_DEAD) for early return, but this is always true since\nsock_orphan(sk) sets SOCK_DEAD, so the sk reference released by socket\nalways leaks, iso_sock_destruct is never called.\n\nThe socket reference also leaks when __iso_sock_close() does not set\nSOCK_ZAPPED, since iso_conn_del() does not call iso_sock_kill() after\nzapping.\n\nFix by replacing SOCK_DEAD by BT_SK_KILLED flag that is not used for\nsomething else, and lock_sock to ensure iso_sock_kill() puts sk only\nafter socket release only once. Release and iso_conn_del may run\nconcurrently. Call iso_sock_kill() from iso_conn_del() to clean sk up\nafter zapping.\n\nRemove call to iso_sock_kill() from iso_sock_close(), as it's generally\nno-op there."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/iso.c"],"versions":[{"version":"ccf74f2390d60a2f9a75ef496d2564abb478f46a","lessThan":"96ed3c772c08e7a91c399567f412618e43231023","status":"affected","versionType":"git"},{"version":"ccf74f2390d60a2f9a75ef496d2564abb478f46a","lessThan":"e76a0ae6542ae43241b2147bacf4990e7ae5316a","status":"affected","versionType":"git"},{"version":"ccf74f2390d60a2f9a75ef496d2564abb478f46a","lessThan":"e30e5ca63c8fbe3cd505fbb419bb547760cda633","status":"affected","versionType":"git"},{"version":"ccf74f2390d60a2f9a75ef496d2564abb478f46a","lessThan":"ce57442a379212fe3fda59c9437ee8217eceb5b1","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/iso.c"],"versions":[{"version":"6.0","status":"affected"},{"version":"0","lessThan":"6.0","status":"unaffected","versionType":"semver"},{"version":"6.12.103","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.44","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.8","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","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":"6.0","versionEndExcluding":"6.12.103"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.18.44"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"7.1.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/96ed3c772c08e7a91c399567f412618e43231023"},{"url":"https://git.kernel.org/stable/c/e76a0ae6542ae43241b2147bacf4990e7ae5316a"},{"url":"https://git.kernel.org/stable/c/e30e5ca63c8fbe3cd505fbb419bb547760cda633"},{"url":"https://git.kernel.org/stable/c/ce57442a379212fe3fda59c9437ee8217eceb5b1"}],"title":"Bluetooth: ISO: fix leaking sk after socket release","x_generator":{"engine":"bippy-1.2.0"}}}}