| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "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" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-50223", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
