{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-50124", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.954Z", "datePublished": "2024-11-05T17:10:52.434Z", "dateUpdated": "2026-08-05T11:41:49.895Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:41:49.895Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: Fix UAF on iso_sock_timeout\n\nconn->sk maybe have been unlinked/freed while waiting for iso_conn_lock\nso this checks if the conn->sk is still valid by checking if it part of\niso_sk_list." } ], "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 `iso_conn` and its `timeout_work` exist only while a real ISO/CIS/BIS link or PA sync is established with an in-range Bluetooth LE Audio peer, and the second patched call site `iso_conn_del()` is driven directly by `iso_connect_cfm`/`iso_disconn_cfm` from adjacent-device HCI events. Bluetooth radio proximity is required, matching the Adjacent classification.\nAC:L - The attacker controls both sides of the race: `SO_SNDTIMEO` sets `sk->sk_sndtimeo`, which `iso_connect_cis()`/`iso_connect_bis()` pass verbatim to `iso_sock_set_timer()`, so the timeout work can be scheduled to fire at an arbitrarily chosen moment and raced against `close()`, and `iso_sock_clear_timer()` uses non-sync `cancel_delayed_work()` so an in-flight work item is never waited for. The sequence is freely repeatable until it wins.\nPR:L - There is no `capable()` or `CAP_NET_*` check anywhere in `bt_sock_create()`, `iso_sock_create()`, `iso_sock_bind()`, `iso_sock_listen()` or `iso_sock_connect()`, so any unprivileged local user can create BTPROTO_ISO sockets and drive the connect/close sequence that frees the socket. Only basic local account access is needed, not root.\nUI:N - The whole sequence — socket creation, `SO_SNDTIMEO`, connect/listen, close — is performed by the attacker's own process against the system Bluetooth adapter. No victim action is required.\nS:U - The use-after-free corrupts kernel heap memory within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `iso_proto` is registered with `proto_register(&iso_proto, 0)`, so `struct iso_pinfo` is allocated from the generic kmalloc caches; the attacker can respray the freed object and read its contents back through subsequent socket operations, giving a path to arbitrary kernel memory disclosure.\nI:H - The stale pointer is written through — `sock_hold()` performs an atomic increment on freed memory and `sk->sk_err = ETIMEDOUT` writes into it — and `sk->sk_state_change(sk)` performs an indirect call through a function pointer read from the freed object, providing a control-flow hijack primitive.\nA:H - Even without successful exploitation the UAF produces a KASAN splat, oops, or panic inside `iso_sock_timeout()` running on the system workqueue, and it can be triggered repeatedly by an unprivileged process." } ] } ], "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": "876ac72d535fa94f4ac57bba651987c6f990f646", "status": "affected", "versionType": "git" }, { "version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a", "lessThan": "14bcb721d241e62fdd18f6f434a2ed2ab6e71a9b", "status": "affected", "versionType": "git" }, { "version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a", "lessThan": "d75aad1d3143ca68cda52ff80ac392e1bbd84325", "status": "affected", "versionType": "git" }, { "version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a", "lessThan": "246b435ad668596aa0e2bbb9d491b6413861211a", "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": "6.1.115", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.59", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.6", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12", "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": "6.1.115" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.6.59" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.11.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.12" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/876ac72d535fa94f4ac57bba651987c6f990f646" }, { "url": "https://git.kernel.org/stable/c/14bcb721d241e62fdd18f6f434a2ed2ab6e71a9b" }, { "url": "https://git.kernel.org/stable/c/d75aad1d3143ca68cda52ff80ac392e1bbd84325" }, { "url": "https://git.kernel.org/stable/c/246b435ad668596aa0e2bbb9d491b6413861211a" } ], "title": "Bluetooth: ISO: Fix UAF on iso_sock_timeout", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-50124", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2024-12-11T14:25:58.935460Z" } } } ], "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": "2024-12-11T14:58:33.796Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:25:43.040Z" } } ] } }