CVE-2026-64406

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64406", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.786Z", "datePublished": "2026-07-25T08:50:47.978Z", "dateUpdated": "2026-10-19T20:38:27.281Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:55:04.583Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: fix UAF in bt_accept_dequeue()\n\nbt_accept_get() takes a temporary reference before dropping the accept\nqueue lock. bt_accept_dequeue() currently drops that reference before\nbt_accept_unlink(), leaving only the queue reference.\n\nbt_accept_unlink() drops the queue reference. The subsequent\nsock_hold() therefore accesses freed memory if it was the final\nreference, as observed by KASAN during listening L2CAP socket cleanup.\n\nRetain the temporary queue-walk reference through unlink and hand it to\nthe caller on success. Drop it explicitly on the closed and\nnot-yet-connected paths."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:A - The vulnerable child is created through an incoming Bluetooth link, with its teardown driven by connection and disconnection events from a nearby peer. Bluetooth radio reachability is adjacent rather than routable network access.\nAC:L - The attacker can control listener cleanup and use an adjacent peer to connect and disconnect before the fixed channel becomes ready, producing the final queue-only reference state. The trigger is repeatable and Bluetooth BR/EDR support is a common default configuration.\nPR:L - Unprivileged SOCK_STREAM or SOCK_SEQPACKET L2CAP sockets and dynamic or fixed-CID binds require no capability; only raw sockets and reserved PSM binds are privileged. Although AF_BLUETOOTH requires init_net, an ordinary host user or user namespace without a new network namespace can reach it.\nUI:N - The attacker can close their own listener while controlling the peer connection lifecycle, requiring no action from another user.\nS:U - Exploitation compromises the vulnerable host kernel but does not inherently cross a VM, IOMMU, or other security-authority boundary.\nC:H - The freed struct sock comes from the general kmalloc-2k cache and can be reclaimed with attacker-controlled data. Subsequent socket and channel dereferences can be developed into arbitrary kernel-memory disclosure.\nI:H - The UAF causes an atomic write to freed memory followed by further operations on the freed socket and channel, enabling heap-spray-based corruption and potential control-flow hijacking.\nA:H - The confirmed post-free write can cause a kernel oops or panic, and the attacker can repeat the connection, disconnection, and cleanup sequence."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/bluetooth/af_bluetooth.c", "net/bluetooth/l2cap_sock.c"], "versions": [{"version": "751de6ec671fe75ad9cf65a0638d2a06b6a5984d", "lessThan": "c0577c55219be42b6ea2ea8db11e85bfab6f4e8d", "status": "affected", "versionType": "git"}, {"version": "407217734835d21d4e0105ebf347860dc1806f88", "lessThan": "96ad400d5132eb333f28f6f1e2d58f0728ca9547", "status": "affected", "versionType": "git"}, {"version": "7eebd4c2c86f573af87ff165d08a83432eb0b919", "lessThan": "0a98ff4e7b867f72fbb4e1237d81e9fa02ded0a0", "status": "affected", "versionType": "git"}, {"version": "5d86d2f1b4d9a508c441d3e45277ae1a73cfed57", "lessThan": "c66a95e60b65d876a927123b0ed36bd6177d9ca6", "status": "affected", "versionType": "git"}, {"version": "87c543e2f78d0871f271df92dab98901bbd5b6f5", "lessThan": "6303ed4bbe0095f4cc195225479bf506e010d1db", "status": "affected", "versionType": "git"}, {"version": "added1213395071470a900cc845a042fb51882a6", "lessThan": "26168db1ce5a9766cde021b18e590a101c056614", "status": "affected", "versionType": "git"}, {"version": "ab1513597c6cf17cd1ad2a21e3b045421b48e022", "lessThan": "50c662bdcd51b03033a0abed6716bfd377ba1049", "status": "affected", "versionType": "git"}, {"version": "ab1513597c6cf17cd1ad2a21e3b045421b48e022", "lessThan": "4bd0b274054f2679f28b70222b607bb0afc3ab9a", "status": "affected", "versionType": "git"}, {"version": "a5ca86a6097a8b030ca3226cd300b17ed330f966", "status": "affected", "versionType": "git"}, {"version": "5.10.259", "lessThan": "5.10.261", "status": "affected", "versionType": "semver"}, {"version": "5.15.210", "lessThan": "5.15.212", "status": "affected", "versionType": "semver"}, {"version": "6.1.175", "lessThan": "6.1.178", "status": "affected", "versionType": "semver"}, {"version": "6.6.142", "lessThan": "6.6.145", "status": "affected", "versionType": "semver"}, {"version": "6.12.92", "lessThan": "6.12.96", "status": "affected", "versionType": "semver"}, {"version": "6.18.34", "lessThan": "6.18.39", "status": "affected", "versionType": "semver"}, {"version": "7.0.11", "lessThan": "7.1", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/bluetooth/af_bluetooth.c", "net/bluetooth/l2cap_sock.c"], "versions": [{"version": "7.1", "status": "affected"}, {"version": "0", "lessThan": "7.1", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.96", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.4", "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": "5.10.259", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.210", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.175", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.142", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.92", "versionEndExcluding": "6.12.96"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18.34", "versionEndExcluding": "6.18.39"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.1.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0.11"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c0577c55219be42b6ea2ea8db11e85bfab6f4e8d"}, {"url": "https://git.kernel.org/stable/c/96ad400d5132eb333f28f6f1e2d58f0728ca9547"}, {"url": "https://git.kernel.org/stable/c/0a98ff4e7b867f72fbb4e1237d81e9fa02ded0a0"}, {"url": "https://git.kernel.org/stable/c/c66a95e60b65d876a927123b0ed36bd6177d9ca6"}, {"url": "https://git.kernel.org/stable/c/6303ed4bbe0095f4cc195225479bf506e010d1db"}, {"url": "https://git.kernel.org/stable/c/26168db1ce5a9766cde021b18e590a101c056614"}, {"url": "https://git.kernel.org/stable/c/50c662bdcd51b03033a0abed6716bfd377ba1049"}, {"url": "https://git.kernel.org/stable/c/4bd0b274054f2679f28b70222b607bb0afc3ab9a"}], "title": "Bluetooth: fix UAF in bt_accept_dequeue()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-64406", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T15:40:14.651940Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T20:38:27.281Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-64406", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T15:40:14.651940Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T15:40:15.328Z"}}], "cna": {"title": "Bluetooth: fix UAF in bt_accept_dequeue()", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:A - The vulnerable child is created through an incoming Bluetooth link, with its teardown driven by connection and disconnection events from a nearby peer. Bluetooth radio reachability is adjacent rather than routable network access.\nAC:L - The attacker can control listener cleanup and use an adjacent peer to connect and disconnect before the fixed channel becomes ready, producing the final queue-only reference state. The trigger is repeatable and Bluetooth BR/EDR support is a common default configuration.\nPR:L - Unprivileged SOCK_STREAM or SOCK_SEQPACKET L2CAP sockets and dynamic or fixed-CID binds require no capability; only raw sockets and reserved PSM binds are privileged. Although AF_BLUETOOTH requires init_net, an ordinary host user or user namespace without a new network namespace can reach it.\nUI:N - The attacker can close their own listener while controlling the peer connection lifecycle, requiring no action from another user.\nS:U - Exploitation compromises the vulnerable host kernel but does not inherently cross a VM, IOMMU, or other security-authority boundary.\nC:H - The freed struct sock comes from the general kmalloc-2k cache and can be reclaimed with attacker-controlled data. Subsequent socket and channel dereferences can be developed into arbitrary kernel-memory disclosure.\nI:H - The UAF causes an atomic write to freed memory followed by further operations on the freed socket and channel, enabling heap-spray-based corruption and potential control-flow hijacking.\nA:H - The confirmed post-free write can cause a kernel oops or panic, and the attacker can repeat the connection, disconnection, and cleanup sequence."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "751de6ec671fe75ad9cf65a0638d2a06b6a5984d", "lessThan": "c0577c55219be42b6ea2ea8db11e85bfab6f4e8d", "versionType": "git"}, {"status": "affected", "version": "407217734835d21d4e0105ebf347860dc1806f88", "lessThan": "96ad400d5132eb333f28f6f1e2d58f0728ca9547", "versionType": "git"}, {"status": "affected", "version": "7eebd4c2c86f573af87ff165d08a83432eb0b919", "lessThan": "0a98ff4e7b867f72fbb4e1237d81e9fa02ded0a0", "versionType": "git"}, {"status": "affected", "version": "5d86d2f1b4d9a508c441d3e45277ae1a73cfed57", "lessThan": "c66a95e60b65d876a927123b0ed36bd6177d9ca6", "versionType": "git"}, {"status": "affected", "version": "87c543e2f78d0871f271df92dab98901bbd5b6f5", "lessThan": "6303ed4bbe0095f4cc195225479bf506e010d1db", "versionType": "git"}, {"status": "affected", "version": "added1213395071470a900cc845a042fb51882a6", "lessThan": "26168db1ce5a9766cde021b18e590a101c056614", "versionType": "git"}, {"status": "affected", "version": "ab1513597c6cf17cd1ad2a21e3b045421b48e022", "lessThan": "50c662bdcd51b03033a0abed6716bfd377ba1049", "versionType": "git"}, {"status": "affected", "version": "ab1513597c6cf17cd1ad2a21e3b045421b48e022", "lessThan": "4bd0b274054f2679f28b70222b607bb0afc3ab9a", "versionType": "git"}, {"status": "affected", "version": "a5ca86a6097a8b030ca3226cd300b17ed330f966", "versionType": "git"}, {"status": "affected", "version": "5.10.259", "lessThan": "5.10.261", "versionType": "semver"}, {"status": "affected", "version": "5.15.210", "lessThan": "5.15.212", "versionType": "semver"}, {"status": "affected", "version": "6.1.175", "lessThan": "6.1.178", "versionType": "semver"}, {"status": "affected", "version": "6.6.142", "lessThan": "6.6.145", "versionType": "semver"}, {"status": "affected", "version": "6.12.92", "lessThan": "6.12.96", "versionType": "semver"}, {"status": "affected", "version": "6.18.34", "lessThan": "6.18.39", "versionType": "semver"}, {"status": "affected", "version": "7.0.11", "lessThan": "7.1", "versionType": "semver"}], "programFiles": ["net/bluetooth/af_bluetooth.c", "net/bluetooth/l2cap_sock.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "7.1"}, {"status": "unaffected", "version": "0", "lessThan": "7.1", "versionType": "semver"}, {"status": 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"https://git.kernel.org/stable/c/c0577c55219be42b6ea2ea8db11e85bfab6f4e8d"}, {"url": "https://git.kernel.org/stable/c/96ad400d5132eb333f28f6f1e2d58f0728ca9547"}, {"url": "https://git.kernel.org/stable/c/0a98ff4e7b867f72fbb4e1237d81e9fa02ded0a0"}, {"url": "https://git.kernel.org/stable/c/c66a95e60b65d876a927123b0ed36bd6177d9ca6"}, {"url": "https://git.kernel.org/stable/c/6303ed4bbe0095f4cc195225479bf506e010d1db"}, {"url": "https://git.kernel.org/stable/c/26168db1ce5a9766cde021b18e590a101c056614"}, {"url": "https://git.kernel.org/stable/c/50c662bdcd51b03033a0abed6716bfd377ba1049"}, {"url": "https://git.kernel.org/stable/c/4bd0b274054f2679f28b70222b607bb0afc3ab9a"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: fix UAF in bt_accept_dequeue()\n\nbt_accept_get() takes a temporary reference before dropping the accept\nqueue lock. bt_accept_dequeue() currently drops that reference before\nbt_accept_unlink(), leaving only the queue reference.\n\nbt_accept_unlink() drops the queue reference. The subsequent\nsock_hold() therefore accesses freed memory if it was the final\nreference, as observed by KASAN during listening L2CAP socket cleanup.\n\nRetain the temporary queue-walk reference through unlink and hand it to\nthe caller on success. Drop it explicitly on the closed and\nnot-yet-connected paths."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.261", "versionStartIncluding": "5.10.259"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.212", "versionStartIncluding": "5.15.210"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.178", "versionStartIncluding": "6.1.175"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.145", "versionStartIncluding": "6.6.142"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.96", "versionStartIncluding": "6.12.92"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.39", "versionStartIncluding": "6.18.34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.4", "versionStartIncluding": "7.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "7.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "7.0.11"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:55:04.583Z"}}}, "cveMetadata": {"cveId": "CVE-2026-64406", "state": "PUBLISHED", "dateUpdated": "2026-10-19T20:38:27.281Z", "dateReserved": "2026-07-19T15:36:31.786Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-07-25T08:50:47.978Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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The subsequent\nsock_hold() therefore accesses freed memory if it was the final\nreference, as observed by KASAN during listening L2CAP socket cleanup.\n\nRetain the temporary queue-walk reference through unlink and hand it to\nthe caller on success. Drop it explicitly on the closed and\nnot-yet-connected paths."}], "id": "CVE-2026-64406", "lastModified": "2026-10-19T21:17:35.963", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-64406", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:40:14.651940Z", "version": "2.0.3"}}]}, "published": "2026-07-25T10:17:24.243", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0a98ff4e7b867f72fbb4e1237d81e9fa02ded0a0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/26168db1ce5a9766cde021b18e590a101c056614"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4bd0b274054f2679f28b70222b607bb0afc3ab9a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/50c662bdcd51b03033a0abed6716bfd377ba1049"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6303ed4bbe0095f4cc195225479bf506e010d1db"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/96ad400d5132eb333f28f6f1e2d58f0728ca9547"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c0577c55219be42b6ea2ea8db11e85bfab6f4e8d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c66a95e60b65d876a927123b0ed36bd6177d9ca6"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: Bluetooth: fix UAF in bt_accept_dequeue()", "id": "2507293", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507293"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's Bluetooth subsystem. This use-after-free (UAF) vulnerability in the `bt_accept_dequeue()` function occurs because a temporary reference is prematurely dropped, leading to `sock_hold()` accessing freed memory. An attacker could potentially exploit this to cause a denial of service (DoS) or other unpredictable system behavior."], "name": "CVE-2026-64406", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "impact": "important", "package_name": "erlang27", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64406\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64406\nhttps://lore.kernel.org/linux-cve-announce/2026072531-CVE-2026-64406-daf2@gregkh/T"], "threat_severity": "Moderate"}

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