{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50419", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-17T14:53:07.003Z", "datePublished": "2025-09-18T16:04:02.152Z", "dateUpdated": "2026-08-05T08:58:43.597Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:58:43.597Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sysfs: Fix attempting to call device_add multiple times\n\ndevice_add shall not be called multiple times as stated in its\ndocumentation:\n\n 'Do not call this routine or device_register() more than once for\n any device structure'\n\nSyzkaller reports a bug as follows [1]:\n------------[ cut here ]------------\nkernel BUG at lib/list_debug.c:33!\ninvalid opcode: 0000 [#1] PREEMPT SMP KASAN\n[...]\nCall Trace:\n \n __list_add include/linux/list.h:69 [inline]\n list_add_tail include/linux/list.h:102 [inline]\n kobj_kset_join lib/kobject.c:164 [inline]\n kobject_add_internal+0x18f/0x8f0 lib/kobject.c:214\n kobject_add_varg lib/kobject.c:358 [inline]\n kobject_add+0x150/0x1c0 lib/kobject.c:410\n device_add+0x368/0x1e90 drivers/base/core.c:3452\n hci_conn_add_sysfs+0x9b/0x1b0 net/bluetooth/hci_sysfs.c:53\n hci_le_cis_estabilished_evt+0x57c/0xae0 net/bluetooth/hci_event.c:6799\n hci_le_meta_evt+0x2b8/0x510 net/bluetooth/hci_event.c:7110\n hci_event_func net/bluetooth/hci_event.c:7440 [inline]\n hci_event_packet+0x63d/0xfd0 net/bluetooth/hci_event.c:7495\n hci_rx_work+0xae7/0x1230 net/bluetooth/hci_core.c:4007\n process_one_work+0x991/0x1610 kernel/workqueue.c:2289\n worker_thread+0x665/0x1080 kernel/workqueue.c:2436\n kthread+0x2e4/0x3a0 kernel/kthread.c:376\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306\n " } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - The vulnerable path is Bluetooth HCI event handling (hci_le_cis_estabilished_evt → hci_conn_add_sysfs) reached when establishing LE Audio/CIS or related links with a nearby Bluetooth peer/controller, so exploitation requires adjacency rather than local shell or routable network access.\nAC:L - An attacker who can drive the HCI event sequence (malicious/buggy controller, or duplicate CIS Established / handle-colliding events) triggers the double device_add reliably; no race or attacker-uncontrollable timing is required.\nPR:N - A nearby Bluetooth peer needs no account or capability on the victim host; connection acceptance is performed by the victim’s normal Bluetooth/LE Audio stack, not by attacker-held OS privileges.\nUI:N - Once Bluetooth is enabled and reachable for CIS/LE connections (common on phones and audio devices), the kernel processes the HCI events asynchronously without further victim action.\nS:U - Impact stays within the host kernel Bluetooth/driver-model authority; this is not a VM escape, IOMMU bypass, or other cross-scope boundary violation.\nC:H - Double device_add corrupts the kobject kset linked list; without list-debug BUG paths this is kernel memory corruption that can be leveraged for arbitrary read primitives, so confidentiality is High.\nI:H - The same list corruption yields classic unlink/write primitives against kernel list pointers, enabling integrity compromise and potential code execution under the required higher-severity rule.\nA:H - With list debugging the double add hits a kernel BUG/oops; without it, corrupted kset lists still cause crashes or hangs when devices are walked or removed, so availability is High." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/bluetooth/hci_sysfs.c" ], "versions": [ { "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec", "lessThan": "4bcefec3636208b4c97536b26014d5935d5c10a0", "status": "affected", "versionType": "git" }, { "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec", "lessThan": "6144423712d570247b8ca26e50a277c30dd13702", "status": "affected", "versionType": "git" }, { "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec", "lessThan": "671fee73e08ff415d36a7c16bdf238927df83884", "status": "affected", "versionType": "git" }, { "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec", "lessThan": "6e85d2ad958c6f034b1b158d904019869dbb3c81", "status": "affected", "versionType": "git" }, { "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec", "lessThan": "7b674dce4162bb46d396586e30e4653427023875", "status": "affected", "versionType": "git" }, { "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec", "lessThan": "3423a50fa018e88aed4c900d59c3c8334d8ad583", "status": "affected", "versionType": "git" }, { "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec", "lessThan": "ef055094df4c10b73cfe67c8d43f9de1fb608a8b", "status": "affected", "versionType": "git" }, { "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec", "lessThan": "1b6c89571f453101251201f0fad1c26f7256e937", "status": "affected", "versionType": "git" }, { "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec", "lessThan": "448a496f760664d3e2e79466aa1787e6abc922b5", "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/hci_sysfs.c" ], "versions": [ { "version": "2.6.19", "status": "affected" }, { "version": "0", "lessThan": "2.6.19", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.331", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.296", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.262", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.220", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.150", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.75", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.19.17", "lessThanOrEqual": "5.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.3", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1", "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": "2.6.19", "versionEndExcluding": "4.9.331" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "4.14.296" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "4.19.262" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "5.4.220" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "5.10.150" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "5.15.75" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "5.19.17" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "6.0.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "6.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/4bcefec3636208b4c97536b26014d5935d5c10a0" }, { "url": "https://git.kernel.org/stable/c/6144423712d570247b8ca26e50a277c30dd13702" }, { "url": "https://git.kernel.org/stable/c/671fee73e08ff415d36a7c16bdf238927df83884" }, { "url": "https://git.kernel.org/stable/c/6e85d2ad958c6f034b1b158d904019869dbb3c81" }, { "url": "https://git.kernel.org/stable/c/7b674dce4162bb46d396586e30e4653427023875" }, { "url": "https://git.kernel.org/stable/c/3423a50fa018e88aed4c900d59c3c8334d8ad583" }, { "url": "https://git.kernel.org/stable/c/ef055094df4c10b73cfe67c8d43f9de1fb608a8b" }, { "url": "https://git.kernel.org/stable/c/1b6c89571f453101251201f0fad1c26f7256e937" }, { "url": "https://git.kernel.org/stable/c/448a496f760664d3e2e79466aa1787e6abc922b5" } ], "title": "Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times", "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-2022-50419", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2026-01-14T19:11:20.804878Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-415", "description": "CWE-415 Double Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T19:13:10.240Z" } } ] } }