{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-50125", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.954Z", "datePublished": "2024-11-05T17:10:53.090Z", "dateUpdated": "2026-08-19T16:27:45.098Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:27:45.098Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: SCO: Fix UAF on sco_sock_timeout\n\nconn->sk maybe have been unlinked/freed while waiting for sco_conn_lock\nso this checks if the conn->sk is still valid by checking if it part of\nsco_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 path lives in the Bluetooth SCO stack and only executes when `conn->hcon` is non-NULL, i.e. an actual SCO/eSCO link exists with an in-range Bluetooth peer; `sco_conn_del()` (the second patched call site) is driven directly by `sco_connect_cfm`/`sco_disconn_cfm` from the adjacent device. 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 `sco_connect()` passes verbatim to `sco_sock_set_timer()`, so the timeout work can be scheduled to fire at an arbitrarily chosen moment and raced against `close()`, and `sco_sock_clear_timer()` uses non-sync `cancel_delayed_work()` so an in-flight work item is never waited for. syzbot produced a reproducer and confirmed the fix.\nPR:L - There is no `capable()` or `CAP_NET_*` check anywhere in `sco_sock_create/bind/listen/connect`, so any unprivileged local user can create SCO 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, close — is performed by the attacker's own process against a system Bluetooth adapter. No victim action is required.\nS:U - The use-after-free corrupts kernel heap memory within the same kernel security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - A use-after-free on `struct sock` lets the attacker respray the freed slab object and read back its contents 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 / kernel oops or panic in `sco_sock_timeout()`, 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": [ "include/net/bluetooth/bluetooth.h", "net/bluetooth/af_bluetooth.c", "net/bluetooth/sco.c" ], "versions": [ { "version": "a1073aad497d0d071a71f61b721966a176d50c08", "lessThan": "678386459ffc07d2fbfbfe33456013786975cfef", "status": "affected", "versionType": "git" }, { "version": "ba316be1b6a00db7126ed9a39f9bee434a508043", "lessThan": "74a466a15731a754bcd8b5a83c126b5122e15a45", "status": "affected", "versionType": "git" }, { "version": "ba316be1b6a00db7126ed9a39f9bee434a508043", "lessThan": "9ddda5d967e84796e7df1b54a55f36b4b9f21079", "status": "affected", "versionType": "git" }, { "version": "ba316be1b6a00db7126ed9a39f9bee434a508043", "lessThan": "d30803f6a972b5b9e26d1d43b583c7ec151de04b", "status": "affected", "versionType": "git" }, { "version": "ba316be1b6a00db7126ed9a39f9bee434a508043", "lessThan": "80b05fbfa998480fb3d5299d93eab946f51e9c36", "status": "affected", "versionType": "git" }, { "version": "ba316be1b6a00db7126ed9a39f9bee434a508043", "lessThan": "1bf4470a3939c678fb822073e9ea77a0560bc6bb", "status": "affected", "versionType": "git" }, { "version": "fea63ccd928c01573306983346588b26cffb5572", "status": "affected", "versionType": "git" }, { "version": "48669c81a65628ef234cbdd91b9395952c7c27fe", "status": "affected", "versionType": "git" }, { "version": "37d7ae2b0578f2373674a755402ee722e96edc08", "status": "affected", "versionType": "git" }, { "version": "ec1f74319bb35c1c90c25014ec0f6ea6c3ca2134", "status": "affected", "versionType": "git" }, { "version": "b657bba82ff6a007d84fd076bd73b11131726a2b", "status": "affected", "versionType": "git" }, { "version": "5.10.67", "lessThan": "5.10.265", "status": "affected", "versionType": "semver" }, { "version": "4.14.263", "lessThan": "4.15", "status": "affected", "versionType": "semver" }, { "version": "4.19.207", "lessThan": "4.20", "status": "affected", "versionType": "semver" }, { "version": "5.4.148", "lessThan": "5.5", "status": "affected", "versionType": "semver" }, { "version": "5.13.19", "lessThan": "5.14", "status": "affected", "versionType": "semver" }, { "version": "5.14.6", "lessThan": "5.15", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "include/net/bluetooth/bluetooth.h", "net/bluetooth/af_bluetooth.c", "net/bluetooth/sco.c" ], "versions": [ { "version": "5.15", "status": "affected" }, { "version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.265", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.181", "lessThanOrEqual": "5.15.*", "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": "5.10.67", "versionEndExcluding": "5.10.265" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "5.15.181" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.1.115" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.6.59" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.11.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14.263" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.207" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.148" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13.19" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14.6" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/678386459ffc07d2fbfbfe33456013786975cfef" }, { "url": "https://git.kernel.org/stable/c/74a466a15731a754bcd8b5a83c126b5122e15a45" }, { "url": "https://git.kernel.org/stable/c/9ddda5d967e84796e7df1b54a55f36b4b9f21079" }, { "url": "https://git.kernel.org/stable/c/d30803f6a972b5b9e26d1d43b583c7ec151de04b" }, { "url": "https://git.kernel.org/stable/c/80b05fbfa998480fb3d5299d93eab946f51e9c36" }, { "url": "https://git.kernel.org/stable/c/1bf4470a3939c678fb822073e9ea77a0560bc6bb" } ], "title": "Bluetooth: SCO: Fix UAF on sco_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-2024-50125", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2024-12-11T14:25:55.353607Z" } } } ], "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": "2024-12-11T14:58:33.667Z" } }, { "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": "2025-11-03T22:25:44.566Z" } } ] } }