{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-50223", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.973Z", "datePublished": "2024-11-09T10:14:34.219Z", "dateUpdated": "2026-05-11T20:47:47.135Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:47:47.135Z" }, "descriptions": [ { "lang": "en", "value": "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()." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "kernel/sched/fair.c" ], "versions": [ { "version": "214dbc4281374cbbd833edd502d0ed1fd1b0e243", "lessThan": "ade91f6e9848b370add44d89c976e070ccb492ef", "status": "affected", "versionType": "git" }, { "version": "214dbc4281374cbbd833edd502d0ed1fd1b0e243", "lessThan": "c60d98ef7078fc3e22b48e98eae7a897d88494ee", "status": "affected", "versionType": "git" }, { "version": "214dbc4281374cbbd833edd502d0ed1fd1b0e243", "lessThan": "9c70b2a33cd2aa6a5a59c5523ef053bd42265209", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "kernel/sched/fair.c" ], "versions": [ { "version": "6.3", "status": "affected" }, { "version": "0", "lessThan": "6.3", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.60", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.7", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12", "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": "6.3", "versionEndExcluding": "6.6.60" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.11.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.12" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/ade91f6e9848b370add44d89c976e070ccb492ef" }, { "url": "https://git.kernel.org/stable/c/c60d98ef7078fc3e22b48e98eae7a897d88494ee" }, { "url": "https://git.kernel.org/stable/c/9c70b2a33cd2aa6a5a59c5523ef053bd42265209" } ], "title": "sched/numa: Fix the potential null pointer dereference in task_numa_work()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-50223", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2025-10-01T20:17:01.866240Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T20:27:04.894Z" } } ] } }