{ "document":{ "aggregate_severity":{ "namespace":"https://nvd.nist.gov/vuln-metrics/cvss", "text":"MEDIUM" }, "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/numa: Fix the potential null pointer dereference in task_numa_work()\n\nWhen running stress-ng-vm-segv test, we found a null pointer dereference\nerror in task_numa_work(). Here is the backtrace:\n\n [323676.066985] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020\n ......\n [323676.067108] CPU: 35 PID: 2694524 Comm: stress-ng-vm-se\n ......\n [323676.067113] pstate: 23401009 (nzCv daif +PAN -UAO +TCO +DIT +SSBS BTYPE=--)\n [323676.067115] pc : vma_migratable+0x1c/0xd0\n [323676.067122] lr : task_numa_work+0x1ec/0x4e0\n [323676.067127] sp : ffff8000ada73d20\n [323676.067128] x29: ffff8000ada73d20 x28: 0000000000000000 x27: 000000003e89f010\n [323676.067130] x26: 0000000000080000 x25: ffff800081b5c0d8 x24: ffff800081b27000\n [323676.067133] x23: 0000000000010000 x22: 0000000104d18cc0 x21: ffff0009f7158000\n [323676.067135] x20: 0000000000000000 x19: 0000000000000000 x18: ffff8000ada73db8\n [323676.067138] x17: 0001400000000000 x16: ffff800080df40b0 x15: 0000000000000035\n [323676.067140] x14: ffff8000ada73cc8 x13: 1fffe0017cc72001 x12: ffff8000ada73cc8\n [323676.067142] x11: ffff80008001160c x10: ffff000be639000c x9 : ffff8000800f4ba4\n [323676.067145] x8 : ffff000810375000 x7 : ffff8000ada73974 x6 : 0000000000000001\n [323676.067147] x5 : 0068000b33e26707 x4 : 0000000000000001 x3 : ffff0009f7158000\n [323676.067149] x2 : 0000000000000041 x1 : 0000000000004400 x0 : 0000000000000000\n [323676.067152] Call trace:\n [323676.067153] vma_migratable+0x1c/0xd0\n [323676.067155] task_numa_work+0x1ec/0x4e0\n [323676.067157] task_work_run+0x78/0xd8\n [323676.067161] do_notify_resume+0x1ec/0x290\n [323676.067163] el0_svc+0x150/0x160\n [323676.067167] el0t_64_sync_handler+0xf8/0x128\n [323676.067170] el0t_64_sync+0x17c/0x180\n [323676.067173] Code: d2888001 910003fd f9000bf3 aa0003f3 (f9401000)\n [323676.067177] SMP: stopping secondary CPUs\n [323676.070184] Starting crashdump kernel...\n\nstress-ng-vm-segv in stress-ng is used to stress test the SIGSEGV error\nhandling function of the system, which tries to cause a SIGSEGV error on\nreturn from unmapping the whole address space of the child process.\n\nNormally this program will not cause kernel crashes. But before the\nmunmap system call returns to user mode, a potential task_numa_work()\nfor numa balancing could be added and executed. In this scenario, since the\nchild process has no vma after munmap, the vma_next() in task_numa_work()\nwill return a null pointer even if the vma iterator restarts from 0.\n\nRecheck the vma pointer before dereferencing it in task_numa_work().", "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-2024-50223" }, { "summary":"CVE-2024-50223 vex file", "category":"self", "url":"https://repo.openeuler.org/security/data/csaf/cve/2024/csaf-openeuler-cve-2024-50223.json" }, { "summary":"openEuler-SA-2024-2492", "category":"self", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-2492" }, { "summary":"CVE-2024-50223", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2024-50223&packageName=kernel" } ], "title":"openEuler cve CVE-2024-50223", "tracking":{ "initial_release_date":"2024-11-29T19:56:15+08:00", "revision_history":[ { "date":"2024-11-29T19:56:15+08:00", "summary":"Initial", "number":"1.0.0" } ], "generator":{ "date":"2024-11-29T19:56:15+08:00", "engine":{ "name":"openEuler CSAF Tool V1.0" } }, "current_release_date":"2024-11-29T19:56:15+08:00", "id":"CVE-2024-50223", "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:24.03-LTS" }, "product_id":"openEuler-24.03-LTS", "name":"openEuler-24.03-LTS" }, "name":"openEuler-24.03-LTS", "category":"product_version" } ], "category":"product_name" }, { "name":"x86_64", "branches":[ { "product":{ "product_identification_helper":{ 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task_numa_work()\n\nWhen running stress-ng-vm-segv test, we found a null pointer dereference\nerror in task_numa_work(). Here is the backtrace:\n\n [323676.066985] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020\n ......\n [323676.067108] CPU: 35 PID: 2694524 Comm: stress-ng-vm-se\n ......\n [323676.067113] pstate: 23401009 (nzCv daif +PAN -UAO +TCO +DIT +SSBS BTYPE=--)\n [323676.067115] pc : vma_migratable+0x1c/0xd0\n [323676.067122] lr : task_numa_work+0x1ec/0x4e0\n [323676.067127] sp : ffff8000ada73d20\n [323676.067128] x29: ffff8000ada73d20 x28: 0000000000000000 x27: 000000003e89f010\n [323676.067130] x26: 0000000000080000 x25: ffff800081b5c0d8 x24: ffff800081b27000\n [323676.067133] x23: 0000000000010000 x22: 0000000104d18cc0 x21: ffff0009f7158000\n [323676.067135] x20: 0000000000000000 x19: 0000000000000000 x18: ffff8000ada73db8\n [323676.067138] x17: 0001400000000000 x16: ffff800080df40b0 x15: 0000000000000035\n [323676.067140] x14: ffff8000ada73cc8 x13: 1fffe0017cc72001 x12: ffff8000ada73cc8\n [323676.067142] x11: ffff80008001160c x10: ffff000be639000c x9 : ffff8000800f4ba4\n [323676.067145] x8 : ffff000810375000 x7 : ffff8000ada73974 x6 : 0000000000000001\n [323676.067147] x5 : 0068000b33e26707 x4 : 0000000000000001 x3 : ffff0009f7158000\n [323676.067149] x2 : 0000000000000041 x1 : 0000000000004400 x0 : 0000000000000000\n [323676.067152] Call trace:\n [323676.067153] vma_migratable+0x1c/0xd0\n [323676.067155] task_numa_work+0x1ec/0x4e0\n [323676.067157] task_work_run+0x78/0xd8\n [323676.067161] do_notify_resume+0x1ec/0x290\n [323676.067163] el0_svc+0x150/0x160\n [323676.067167] el0t_64_sync_handler+0xf8/0x128\n [323676.067170] el0t_64_sync+0x17c/0x180\n [323676.067173] Code: d2888001 910003fd f9000bf3 aa0003f3 (f9401000)\n [323676.067177] SMP: stopping secondary CPUs\n [323676.070184] Starting crashdump kernel...\n\nstress-ng-vm-segv in stress-ng is used to stress test the SIGSEGV error\nhandling function of the system, which tries to cause a SIGSEGV error on\nreturn from unmapping the whole address space of the child process.\n\nNormally this program will not cause kernel crashes. But before the\nmunmap system call returns to user mode, a potential task_numa_work()\nfor numa balancing could be added and executed. In this scenario, since the\nchild process has no vma after munmap, the vma_next() in task_numa_work()\nwill return a null pointer even if the vma iterator restarts from 0.\n\nRecheck the vma pointer before dereferencing it in task_numa_work().", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-24.03-LTS:bpftool-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:bpftool-debuginfo-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:kernel-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:kernel-debuginfo-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:kernel-debugsource-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:kernel-devel-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:kernel-headers-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:kernel-source-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:kernel-tools-6.6.0-57.0.0.59.oe2403.x86_64", 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"vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version":"3.1" }, "products":[ "openEuler-24.03-LTS:bpftool-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:bpftool-debuginfo-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:kernel-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:kernel-debuginfo-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:kernel-debugsource-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:kernel-devel-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:kernel-headers-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:kernel-source-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:kernel-tools-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:kernel-tools-debuginfo-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:kernel-tools-devel-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:perf-6.6.0-57.0.0.59.oe2403.x86_64", "openEuler-24.03-LTS:perf-debuginfo-6.6.0-57.0.0.59.oe2403.x86_64", 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"openEuler-24.03-LTS:perf-6.6.0-57.0.0.59.oe2403.aarch64", "openEuler-24.03-LTS:perf-debuginfo-6.6.0-57.0.0.59.oe2403.aarch64", "openEuler-24.03-LTS:python3-perf-6.6.0-57.0.0.59.oe2403.aarch64", "openEuler-24.03-LTS:python3-perf-debuginfo-6.6.0-57.0.0.59.oe2403.aarch64" ] } ], "threats":[ { "details":"Medium", "category":"impact" } ], "title":"CVE-2024-50223" } ] }