{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2024-50019", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T12:17:06.064Z", "datePublished": "2024-10-21T19:39:25.908Z", "dateUpdated": "2025-11-03T22:24:32.144Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T09:43:55.766Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkthread: unpark only parked kthread\n\nCalling into kthread unparking unconditionally is mostly harmless when\nthe kthread is already unparked. The wake up is then simply ignored\nbecause the target is not in TASK_PARKED state.\n\nHowever if the kthread is per CPU, the wake up is preceded by a call\nto kthread_bind() which expects the task to be inactive and in\nTASK_PARKED state, which obviously isn't the case if it is unparked.\n\nAs a result, calling kthread_stop() on an unparked per-cpu kthread\ntriggers such a warning:\n\n\tWARNING: CPU: 0 PID: 11 at kernel/kthread.c:525 __kthread_bind_mask kernel/kthread.c:525\n\t <TASK>\n\t kthread_stop+0x17a/0x630 kernel/kthread.c:707\n\t destroy_workqueue+0x136/0xc40 kernel/workqueue.c:5810\n\t wg_destruct+0x1e2/0x2e0 drivers/net/wireguard/device.c:257\n\t netdev_run_todo+0xe1a/0x1000 net/core/dev.c:10693\n\t default_device_exit_batch+0xa14/0xa90 net/core/dev.c:11769\n\t ops_exit_list net/core/net_namespace.c:178 [inline]\n\t cleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640\n\t process_one_work kernel/workqueue.c:3231 [inline]\n\t process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312\n\t worker_thread+0x86d/0xd70 kernel/workqueue.c:3393\n\t kthread+0x2f0/0x390 kernel/kthread.c:389\n\t ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n\t ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\n\t </TASK>\n\nFix this with skipping unecessary unparking while stopping a kthread."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/kthread.c"], "versions": [{"version": "5c25b5ff89f004c30b04759dc34ace8585a4085f", "lessThan": "40a6e660d2a3a7a5cb99f0b8ff4fb41bad039f68", "status": "affected", "versionType": "git"}, {"version": "5c25b5ff89f004c30b04759dc34ace8585a4085f", "lessThan": "8608196a155cb6cfae04d96b10a2652d0327e33f", "status": "affected", "versionType": "git"}, {"version": "5c25b5ff89f004c30b04759dc34ace8585a4085f", "lessThan": "19a5029981c87c2ad0845e713837faa88f5d8e2b", "status": "affected", 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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4D51C05D-455B-4D8D-89E7-A58E140B864C", "versionEndExcluding": "5.15.168", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D01BD22E-ACD1-4618-9D01-6116570BE1EE", "versionEndExcluding": "6.1.113", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "05D83DB8-7465-4F88-AFB2-980011992AC1", "versionEndExcluding": "6.6.57", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "AA84D336-CE9A-4535-B901-1AD77EC17C34", "versionEndExcluding": "6.11.4", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*", "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*", "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkthread: unpark only parked kthread\n\nCalling into kthread unparking unconditionally is mostly harmless when\nthe kthread is already unparked. The wake up is then simply ignored\nbecause the target is not in TASK_PARKED state.\n\nHowever if the kthread is per CPU, the wake up is preceded by a call\nto kthread_bind() which expects the task to be inactive and in\nTASK_PARKED state, which obviously isn't the case if it is unparked.\n\nAs a result, calling kthread_stop() on an unparked per-cpu kthread\ntriggers such a warning:\n\n\tWARNING: CPU: 0 PID: 11 at kernel/kthread.c:525 __kthread_bind_mask kernel/kthread.c:525\n\t <TASK>\n\t kthread_stop+0x17a/0x630 kernel/kthread.c:707\n\t destroy_workqueue+0x136/0xc40 kernel/workqueue.c:5810\n\t wg_destruct+0x1e2/0x2e0 drivers/net/wireguard/device.c:257\n\t netdev_run_todo+0xe1a/0x1000 net/core/dev.c:10693\n\t default_device_exit_batch+0xa14/0xa90 net/core/dev.c:11769\n\t ops_exit_list net/core/net_namespace.c:178 [inline]\n\t cleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640\n\t process_one_work kernel/workqueue.c:3231 [inline]\n\t process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312\n\t worker_thread+0x86d/0xd70 kernel/workqueue.c:3393\n\t kthread+0x2f0/0x390 kernel/kthread.c:389\n\t ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n\t ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\n\t </TASK>\n\nFix this with skipping unecessary unparking while stopping a kthread."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: kthread: unpark solo kthread aparcado Llamar a kthread unparking incondicionalmente es mayormente inofensivo cuando el kthread ya est\u00e1 desestacionado. Luego, la activaci\u00f3n simplemente se ignora porque el objetivo no est\u00e1 en estado TASK_PARKED. Sin embargo, si el kthread es por CPU, la activaci\u00f3n est\u00e1 precedida por una llamada a kthread_bind() que espera que la tarea est\u00e9 inactiva y en estado TASK_PARKED, lo que obviamente no es el caso si est\u00e1 desestacionada. Como resultado, llamar a kthread_stop() en un kthread por CPU no estacionado activa esta advertencia: ADVERTENCIA: CPU: 0 PID: 11 en kernel/kthread.c:525 __kthread_bind_mask kernel/kthread.c:525 kthread_stop+0x17a/0x630 kernel/kthread.c:707 destroy_workqueue+0x136/0xc40 kernel/workqueue.c:5810 wg_destruct+0x1e2/0x2e0 drivers/net/wireguard/device.c:257 netdev_run_todo+0xe1a/0x1000 net/core/dev.c:10693 default_device_exit_batch+0xa14/0xa90 net/core/dev.c:11769 ops_exit_list net/core/net_namespace.c:178 [en l\u00ednea] cleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640 process_one_work kernel/workqueue.c:3231 [en l\u00ednea] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Solucione esto omitiendo el desestacionamiento innecesario mientras Detener un kthread."}], "id": "CVE-2024-50019", "lastModified": "2025-11-03T23:16:40.920", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-10-21T20:15:15.510", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/19a5029981c87c2ad0845e713837faa88f5d8e2b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/214e01ad4ed7158cab66498810094fac5d09b218"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/40a6e660d2a3a7a5cb99f0b8ff4fb41bad039f68"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8608196a155cb6cfae04d96b10a2652d0327e33f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cda5423c1a1c906062ef235c940f249b97d9d135"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2025:6966", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-570.12.1.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-05-13T00:00:00Z"}, {"advisory": "RHSA-2025:6966", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-570.12.1.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-05-13T00:00:00Z"}], "bugzilla": {"description": "kernel: kthread: unpark only parked kthread", "id": "2320625", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2320625"}, "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": "verified"}, "cwe": "CWE-99", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nkthread: unpark only parked kthread\nCalling into kthread unparking unconditionally is mostly harmless when\nthe kthread is already unparked. The wake up is then simply ignored\nbecause the target is not in TASK_PARKED state.\nHowever if the kthread is per CPU, the wake up is preceded by a call\nto kthread_bind() which expects the task to be inactive and in\nTASK_PARKED state, which obviously isn't the case if it is unparked.\nAs a result, calling kthread_stop() on an unparked per-cpu kthread\ntriggers such a warning:\nWARNING: CPU: 0 PID: 11 at kernel/kthread.c:525 __kthread_bind_mask kernel/kthread.c:525\n<TASK>\nkthread_stop+0x17a/0x630 kernel/kthread.c:707\ndestroy_workqueue+0x136/0xc40 kernel/workqueue.c:5810\nwg_destruct+0x1e2/0x2e0 drivers/net/wireguard/device.c:257\nnetdev_run_todo+0xe1a/0x1000 net/core/dev.c:10693\ndefault_device_exit_batch+0xa14/0xa90 net/core/dev.c:11769\nops_exit_list net/core/net_namespace.c:178 [inline]\ncleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640\nprocess_one_work kernel/workqueue.c:3231 [inline]\nprocess_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312\nworker_thread+0x86d/0xd70 kernel/workqueue.c:3393\nkthread+0x2f0/0x390 kernel/kthread.c:389\nret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\nret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\n</TASK>\nFix this with skipping unecessary unparking while stopping a kthread."], "name": "CVE-2024-50019", "package_state": [{"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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-10-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-50019\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-50019\nhttps://lore.kernel.org/linux-cve-announce/2024102126-CVE-2024-50019-5896@gregkh/T"], "threat_severity": "Moderate"}