{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2024-35967", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-17T13:50:33.140Z", "datePublished": "2024-05-20T09:41:56.503Z", "dateUpdated": "2026-08-05T11:31:16.372Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:31:16.372Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: SCO: Fix not validating setsockopt user input\n\nsyzbot reported sco_sock_setsockopt() is copying data without\nchecking user input length.\n\nBUG: KASAN: slab-out-of-bounds in copy_from_sockptr_offset\ninclude/linux/sockptr.h:49 [inline]\nBUG: KASAN: slab-out-of-bounds in copy_from_sockptr\ninclude/linux/sockptr.h:55 [inline]\nBUG: KASAN: slab-out-of-bounds in sco_sock_setsockopt+0xc0b/0xf90\nnet/bluetooth/sco.c:893\nRead of size 4 at addr ffff88805f7b15a3 by task syz-executor.5/12578" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The flaw is triggered purely through the setsockopt(2) syscall on a locally created AF_BLUETOOTH/BTPROTO_SCO socket; no Bluetooth radio traffic, paired peer, or adapter link is involved in reaching the unvalidated copy.\nAC:L - Exploitation is fully deterministic and attacker-controlled — issue setsockopt(fd, SOL_BLUETOOTH, BT_PKT_STATUS/BT_DEFER_SETUP, buf, optlen<4); no race, no timing window, and no memory-layout condition outside the attacker's influence.\nPR:L - sco_sock_create() and bt_sock_create() contain no capability check (unlike HCI raw sockets), so any unprivileged local user can open a SCO socket and call setsockopt; only the permissive security_socket_setsockopt() LSM hook sits on the path.\nUI:N - The attacker performs every step itself via its own socket; no victim action, mount, or file open is needed.\nS:U - The out-of-bounds access occurs in kernel slab memory within the same security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - The bug is an out-of-bounds read of kernel heap memory past the end of the optval allocation, and the disclosed value is observable back in userspace because sco_sock_getsockopt() returns the BT_SK_DEFER_SETUP/BT_SK_PKT_STATUS bits, giving a repeatable oracle over adjacent kernel memory that can be combined with heap grooming to leak kernel data.\nI:N - The defect is a read past the end of a buffer; nothing is written out of bounds, and the leaked value only toggles a flag on the attacker's own socket, so no data outside the attacker's authority is modified.\nA:H - The slab out-of-bounds read triggers a KASAN BUG/panic on hardened and debug kernels and can fault when the copy crosses into an unmapped or guarded page, producing a kernel oops repeatable at will by an unprivileged user." } ] } ], "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/sco.c" ], "versions": [ { "version": "b96e9c671b05f95126753a22145d4509d45ca197", "lessThan": "b0e30c37695b614bee69187f86eaf250e36606ce", "status": "affected", "versionType": "git" }, { "version": "b96e9c671b05f95126753a22145d4509d45ca197", "lessThan": "2c2dc87cdebef3fe3b9d7a711a984c70e376e32e", "status": "affected", "versionType": "git" }, { "version": "b96e9c671b05f95126753a22145d4509d45ca197", "lessThan": "7bc65d23ba20dcd7ecc094a12c181e594e5eb315", "status": "affected", "versionType": "git" }, { "version": "b96e9c671b05f95126753a22145d4509d45ca197", "lessThan": "72473db90900da970a16ee50ad23c2c38d107d8c", "status": "affected", "versionType": "git" }, { "version": "b96e9c671b05f95126753a22145d4509d45ca197", "lessThan": "419a0ffca7010216f0fc265b08558d7394fa0ba7", "status": "affected", "versionType": "git" }, { "version": "b96e9c671b05f95126753a22145d4509d45ca197", "lessThan": "51eda36d33e43201e7a4fd35232e069b2c850b01", "status": "affected", "versionType": "git" } ] }, { "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/sco.c" ], "versions": [ { "version": "3.8", "status": "affected" }, { "version": "0", "lessThan": "3.8", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.216", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.178", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.87", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.28", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8.7", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9", "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": "3.8", "versionEndExcluding": "5.10.216" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "5.15.178" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.1.87" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.6.28" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.8.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.9" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/b0e30c37695b614bee69187f86eaf250e36606ce" }, { "url": "https://git.kernel.org/stable/c/2c2dc87cdebef3fe3b9d7a711a984c70e376e32e" }, { "url": "https://git.kernel.org/stable/c/7bc65d23ba20dcd7ecc094a12c181e594e5eb315" }, { "url": "https://git.kernel.org/stable/c/72473db90900da970a16ee50ad23c2c38d107d8c" }, { "url": "https://git.kernel.org/stable/c/419a0ffca7010216f0fc265b08558d7394fa0ba7" }, { "url": "https://git.kernel.org/stable/c/51eda36d33e43201e7a4fd35232e069b2c850b01" } ], "title": "Bluetooth: SCO: Fix not validating setsockopt user input", "x_generator": { 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