{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74537", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.913Z", "datePublished": "2026-08-15T12:27:49.668Z", "dateUpdated": "2026-08-15T12:27:49.668Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-15T12:27:49.668Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: hold sk properly in iso_conn_ready\n\nsk deref in iso_conn_ready must be done either under conn->lock, or\nholding a refcount, to avoid concurrent close. conn->sk is currently\naccessed without either:\n\n [Task 1] [Task 2]\n iso_sock_release\n iso_conn_ready\n sk = conn->sk\n lock_sock(sk)\n conn->sk = NULL\n lock_sock(sk)\n release_sock(sk)\n iso_sock_kill(sk)\n UAF on sk deref\n\nFix possible UAF by holding sk refcount in iso_conn_ready(). Also\nrecheck after lock_sock that the socket is still valid. Adjust locking\nso conn->sk is cleared only under lock_sock."}], "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": "27c24fda62b601d6f9ca5e992502578c4310876f", "lessThan": "4e9b5e8669b3602a4e01b6d1e9539b72e42c84d5", "status": "affected", "versionType": "git"}, {"version": "27c24fda62b601d6f9ca5e992502578c4310876f", "lessThan": "1308d72903d792d10b82bc4ef08b8a4452308b04", "status": "affected", "versionType": "git"}, {"version": "27c24fda62b601d6f9ca5e992502578c4310876f", "lessThan": "0d255e63fcf3f13a570d7ac11678fa1164ac015c", "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": "5.15", "status": "affected"}, {"version": "0", "lessThan": "5.15", "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-rc6", "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": "5.15", "versionEndExcluding": "6.18.44"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "7.1.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "7.2-rc6"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/4e9b5e8669b3602a4e01b6d1e9539b72e42c84d5"}, {"url": "https://git.kernel.org/stable/c/1308d72903d792d10b82bc4ef08b8a4452308b04"}, {"url": "https://git.kernel.org/stable/c/0d255e63fcf3f13a570d7ac11678fa1164ac015c"}], "title": "Bluetooth: ISO: hold sk properly in iso_conn_ready", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/bluetooth/iso.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "4e9b5e8669b3602a4e01b6d1e9539b72e42c84d5", "status": "affected", "version": "27c24fda62b601d6f9ca5e992502578c4310876f", "versionType": "git"}, {"lessThan": "1308d72903d792d10b82bc4ef08b8a4452308b04", "status": "affected", "version": "27c24fda62b601d6f9ca5e992502578c4310876f", "versionType": "git"}, {"lessThan": "0d255e63fcf3f13a570d7ac11678fa1164ac015c", "status": "affected", "version": "27c24fda62b601d6f9ca5e992502578c4310876f", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/bluetooth/iso.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.15"}, {"lessThan": "5.15", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.44", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.8", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2-rc6", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: hold sk properly in iso_conn_ready\n\nsk deref in iso_conn_ready must be done either under conn->lock, or\nholding a refcount, to avoid concurrent close. conn->sk is currently\naccessed without either:\n\n [Task 1] [Task 2]\n iso_sock_release\n iso_conn_ready\n sk = conn->sk\n lock_sock(sk)\n conn->sk = NULL\n lock_sock(sk)\n release_sock(sk)\n iso_sock_kill(sk)\n UAF on sk deref\n\nFix possible UAF by holding sk refcount in iso_conn_ready(). Also\nrecheck after lock_sock that the socket is still valid. Adjust locking\nso conn->sk is cleared only under lock_sock."}], "id": "CVE-2026-74537", "lastModified": "2026-08-15T13:17:59.040", "metrics": {}, "published": "2026-08-15T13:17:59.040", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0d255e63fcf3f13a570d7ac11678fa1164ac015c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1308d72903d792d10b82bc4ef08b8a4452308b04"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4e9b5e8669b3602a4e01b6d1e9539b72e42c84d5"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"created": "2026-08-15T15:15:03.212954+00:00", "updated": "2026-08-15T15:15:03.212959+00:00", "vendors": []}