{ "document":{ "aggregate_severity":{ "namespace":"https://nvd.nist.gov/vuln-metrics/cvss", "text":"HIGH" }, "category":"csaf_vex", "csaf_version":"2.0", "distribution":{ "tlp":{ "label":"WHITE", "url":"https:/www.first.org/tlp/" } }, "lang":"en", "notes":[ { "text":"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.", "category":"general", "title":"Synopsis" } ], "publisher":{ "issuing_authority":"openEuler security committee", "name":"openEuler", "namespace":"https://www.openeuler.org", "contact_details":"openeuler-security@openeuler.org", "category":"vendor" }, "references":[ { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2022-50103" }, { "summary":"CVE-2022-50103 vex file", "category":"self", "url":"https://repo.openeuler.org/security/data/csaf/cve/2022/csaf-openeuler-cve-2022-50103.json" }, { "summary":"openEuler-SA-2025-1820", "category":"self", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1820" }, { "summary":"CVE-2022-50103", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2022-50103&packageName=kernel" } ], "title":"openEuler cve CVE-2022-50103", "tracking":{ "initial_release_date":"2025-07-11T20:21:19+08:00", "revision_history":[ { "date":"2025-07-11T20:21:19+08:00", "summary":"Initial", "number":"1.0.0" } ], "generator":{ "date":"2025-07-11T20:21:19+08:00", "engine":{ "name":"openEuler CSAF Tool V1.0" } }, "current_release_date":"2025-07-11T20:21:19+08:00", "id":"CVE-2022-50103", "version":"1.0.0", "status":"interim" } }, "product_tree":{ "branches":[ { "name":"openEuler", "category":"vendor", "branches":[ { "name":"openEuler", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:20.03-LTS-SP4" }, "product_id":"openEuler-20.03-LTS-SP4", "name":"openEuler-20.03-LTS-SP4" }, "name":"openEuler-20.03-LTS-SP4", "category":"product_version" } ], "category":"product_name" }, { "name":"aarch64", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:20.03-LTS-SP4" }, 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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.", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-20.03-LTS-SP4:bpftool-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:bpftool-debuginfo-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-debuginfo-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-debugsource-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-devel-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-source-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-tools-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-tools-debuginfo-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", 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"vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version":"3.1" }, "products":[ "openEuler-20.03-LTS-SP4:bpftool-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:bpftool-debuginfo-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-debuginfo-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-debugsource-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-devel-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-source-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-tools-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-tools-debuginfo-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-tools-devel-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:perf-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", 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