{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-50103", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-06-18T10:57:27.413Z", "datePublished": "2025-06-18T11:02:38.840Z", "dateUpdated": "2025-06-18T11:02:38.840Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-06-18T11:02:38.840Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched, cpuset: Fix dl_cpu_busy() panic due to empty cs->cpus_allowed\n\nWith cgroup v2, the cpuset's cpus_allowed mask can be empty indicating\nthat the cpuset will just use the effective CPUs of its parent. So\ncpuset_can_attach() can call task_can_attach() with an empty mask.\nThis can lead to cpumask_any_and() returns nr_cpu_ids causing the call\nto dl_bw_of() to crash due to percpu value access of an out of bound\nCPU value. For example:\n\n\t[80468.182258] BUG: unable to handle page fault for address: ffffffff8b6648b0\n\t :\n\t[80468.191019] RIP: 0010:dl_cpu_busy+0x30/0x2b0\n\t :\n\t[80468.207946] Call Trace:\n\t[80468.208947] cpuset_can_attach+0xa0/0x140\n\t[80468.209953] cgroup_migrate_execute+0x8c/0x490\n\t[80468.210931] cgroup_update_dfl_csses+0x254/0x270\n\t[80468.211898] cgroup_subtree_control_write+0x322/0x400\n\t[80468.212854] kernfs_fop_write_iter+0x11c/0x1b0\n\t[80468.213777] new_sync_write+0x11f/0x1b0\n\t[80468.214689] vfs_write+0x1eb/0x280\n\t[80468.215592] ksys_write+0x5f/0xe0\n\t[80468.216463] do_syscall_64+0x5c/0x80\n\t[80468.224287] entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nFix that by using effective_cpus instead. For cgroup v1, effective_cpus\nis the same as cpus_allowed. For v2, effective_cpus is the real cpumask\nto be used by tasks within the cpuset anyway.\n\nAlso update task_can_attach()'s 2nd argument name to cs_effective_cpus to\nreflect the change. In addition, a check is added to task_can_attach()\nto guard against the possibility that cpumask_any_and() may return a\nvalue >= nr_cpu_ids."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/linux/sched.h", "kernel/cgroup/cpuset.c", "kernel/sched/core.c"], "versions": [{"version": "7f51412a415d87ea8598d14722fb31e4f5701257", "lessThan": "336626564b58071b8980a4e6a31a8f5d92705d9b", "status": "affected", "versionType": "git"}, {"version": "7f51412a415d87ea8598d14722fb31e4f5701257", "lessThan": "147f66d22f58712dce7ccdd6a1f6cb3ee8042df4", "status": "affected", "versionType": "git"}, {"version": "7f51412a415d87ea8598d14722fb31e4f5701257", "lessThan": "357f3f0e522a6ce1ce4a571cb780d9861d53bec7", "status": "affected", "versionType": "git"}, {"version": "7f51412a415d87ea8598d14722fb31e4f5701257", "lessThan": "f56607b44c9896e51678a7e8cdd3a5479f4b4548", "status": "affected", "versionType": "git"}, {"version": "7f51412a415d87ea8598d14722fb31e4f5701257", "lessThan": "b6e8d40d43ae4dec00c8fea2593eeea3114b8f44", "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/linux/sched.h", "kernel/cgroup/cpuset.c", "kernel/sched/core.c"], "versions": [{"version": "3.19", "status": "affected"}, {"version": "0", "lessThan": "3.19", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.137", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.61", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.18.18", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.19.2", "lessThanOrEqual": "5.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0", "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": "3.19", "versionEndExcluding": "5.10.137"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.19", "versionEndExcluding": "5.15.61"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.19", "versionEndExcluding": "5.18.18"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.19", "versionEndExcluding": "5.19.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.19", "versionEndExcluding": "6.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/336626564b58071b8980a4e6a31a8f5d92705d9b"}, {"url": "https://git.kernel.org/stable/c/147f66d22f58712dce7ccdd6a1f6cb3ee8042df4"}, {"url": "https://git.kernel.org/stable/c/357f3f0e522a6ce1ce4a571cb780d9861d53bec7"}, {"url": "https://git.kernel.org/stable/c/f56607b44c9896e51678a7e8cdd3a5479f4b4548"}, {"url": "https://git.kernel.org/stable/c/b6e8d40d43ae4dec00c8fea2593eeea3114b8f44"}], "title": "sched, cpuset: Fix dl_cpu_busy() panic due to empty cs->cpus_allowed", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D7F94E3E-3387-47A2-BF64-B07D883DD8C4", "versionEndExcluding": "5.10.137", "versionStartIncluding": "3.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "51861563-7F40-460F-82CD-2D3FBDAD6618", "versionEndExcluding": "5.15.61", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5B42E453-8837-49D0-A5EF-03F818A6DC11", "versionEndExcluding": "5.18.18", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A1A2A5A5-4598-4D7E-BA07-4660398D6C8F", "versionEndExcluding": "5.19.2", "versionStartIncluding": "5.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched, cpuset: Fix dl_cpu_busy() panic due to empty cs->cpus_allowed\n\nWith cgroup v2, the cpuset's cpus_allowed mask can be empty indicating\nthat the cpuset will just use the effective CPUs of its parent. So\ncpuset_can_attach() can call task_can_attach() with an empty mask.\nThis can lead to cpumask_any_and() returns nr_cpu_ids causing the call\nto dl_bw_of() to crash due to percpu value access of an out of bound\nCPU value. For example:\n\n\t[80468.182258] BUG: unable to handle page fault for address: ffffffff8b6648b0\n\t :\n\t[80468.191019] RIP: 0010:dl_cpu_busy+0x30/0x2b0\n\t :\n\t[80468.207946] Call Trace:\n\t[80468.208947] cpuset_can_attach+0xa0/0x140\n\t[80468.209953] cgroup_migrate_execute+0x8c/0x490\n\t[80468.210931] cgroup_update_dfl_csses+0x254/0x270\n\t[80468.211898] cgroup_subtree_control_write+0x322/0x400\n\t[80468.212854] kernfs_fop_write_iter+0x11c/0x1b0\n\t[80468.213777] new_sync_write+0x11f/0x1b0\n\t[80468.214689] vfs_write+0x1eb/0x280\n\t[80468.215592] ksys_write+0x5f/0xe0\n\t[80468.216463] do_syscall_64+0x5c/0x80\n\t[80468.224287] entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nFix that by using effective_cpus instead. For cgroup v1, effective_cpus\nis the same as cpus_allowed. For v2, effective_cpus is the real cpumask\nto be used by tasks within the cpuset anyway.\n\nAlso update task_can_attach()'s 2nd argument name to cs_effective_cpus to\nreflect the change. In addition, a check is added to task_can_attach()\nto guard against the possibility that cpumask_any_and() may return a\nvalue >= nr_cpu_ids."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sched, cpuset: Se solucion\u00f3 el p\u00e1nico de dl_cpu_busy() debido a un valor de cs->cpus_allowed vac\u00edo. Con cgroup v2, la m\u00e1scara cpus_allowed de cpuset puede estar vac\u00eda, lo que indica que solo usar\u00e1 las CPU efectivas de su padre. Por lo tanto, cpuset_can_attach() puede llamar a task_can_attach() con una m\u00e1scara vac\u00eda. Esto puede provocar que cpumask_any_and() devuelva nr_cpu_ids, lo que provoca el bloqueo de la llamada a dl_bw_of() debido al acceso a un valor de CPU fuera de los l\u00edmites. Por ejemplo: [80468.182258] ERROR: no se puede manejar el error de p\u00e1gina para la direcci\u00f3n: ffffffff8b6648b0 : [80468.191019] RIP: 0010:dl_cpu_busy+0x30/0x2b0 : [80468.207946] Rastreo de llamadas: [80468.208947] cpuset_can_attach+0xa0/0x140 [80468.209953] cgroup_migrate_execute+0x8c/0x490 [80468.210931] cgroup_update_dfl_csses+0x254/0x270 [80468.211898] Solucione esto utilizando effective_cpus en su lugar. Para cgroup v1, effective_cpus es igual que cpus_allowed. Para v2, effective_cpus es la m\u00e1scara de CPU real que usar\u00e1n las tareas dentro del conjunto de CPU. Actualice tambi\u00e9n el segundo argumento de task_can_attach() a cs_effective_cpus para reflejar el cambio. Adem\u00e1s, se ha a\u00f1adido una comprobaci\u00f3n a task_can_attach() para evitar que cpumask_any_and() devuelva un valor mayor que nr_cpu_ids."}], "id": "CVE-2022-50103", "lastModified": "2025-11-19T13:29:49.433", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-06-18T11:15:39.670", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/147f66d22f58712dce7ccdd6a1f6cb3ee8042df4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/336626564b58071b8980a4e6a31a8f5d92705d9b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/357f3f0e522a6ce1ce4a571cb780d9861d53bec7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b6e8d40d43ae4dec00c8fea2593eeea3114b8f44"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f56607b44c9896e51678a7e8cdd3a5479f4b4548"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: sched, cpuset: Fix dl_cpu_busy() panic due to empty cs->cpus_allowed", "id": "2373575", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2373575"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nsched, cpuset: Fix dl_cpu_busy() panic due to empty cs->cpus_allowed\nWith cgroup v2, the cpuset's cpus_allowed mask can be empty indicating\nthat the cpuset will just use the effective CPUs of its parent. So\ncpuset_can_attach() can call task_can_attach() with an empty mask.\nThis can lead to cpumask_any_and() returns nr_cpu_ids causing the call\nto dl_bw_of() to crash due to percpu value access of an out of bound\nCPU value. For example:\n[80468.182258] BUG: unable to handle page fault for address: ffffffff8b6648b0\n:\n[80468.191019] RIP: 0010:dl_cpu_busy+0x30/0x2b0\n:\n[80468.207946] Call Trace:\n[80468.208947] cpuset_can_attach+0xa0/0x140\n[80468.209953] cgroup_migrate_execute+0x8c/0x490\n[80468.210931] cgroup_update_dfl_csses+0x254/0x270\n[80468.211898] cgroup_subtree_control_write+0x322/0x400\n[80468.212854] kernfs_fop_write_iter+0x11c/0x1b0\n[80468.213777] new_sync_write+0x11f/0x1b0\n[80468.214689] vfs_write+0x1eb/0x280\n[80468.215592] ksys_write+0x5f/0xe0\n[80468.216463] do_syscall_64+0x5c/0x80\n[80468.224287] entry_SYSCALL_64_after_hwframe+0x44/0xae\nFix that by using effective_cpus instead. For cgroup v1, effective_cpus\nis the same as cpus_allowed. For v2, effective_cpus is the real cpumask\nto be used by tasks within the cpuset anyway.\nAlso update task_can_attach()'s 2nd argument name to cs_effective_cpus to\nreflect the change. In addition, a check is added to task_can_attach()\nto guard against the possibility that cpumask_any_and() may return a\nvalue >= nr_cpu_ids."], "name": "CVE-2022-50103", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-06-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-50103\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-50103\nhttps://lore.kernel.org/linux-cve-announce/2025061804-CVE-2022-50103-01db@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-06-23T08:36:33.511848+00:00", "updated": "2025-06-23T08:36:33.511897+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}