{"id":"CVE-2024-43889","summary":"padata: Fix possible divide-by-0 panic in padata_mt_helper()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\npadata: Fix possible divide-by-0 panic in padata_mt_helper()\n\nWe are hit with a not easily reproducible divide-by-0 panic in padata.c at\nbootup time.\n\n  [   10.017908] Oops: divide error: 0000 1 PREEMPT SMP NOPTI\n  [   10.017908] CPU: 26 PID: 2627 Comm: kworker/u1666:1 Not tainted 6.10.0-15.el10.x86_64 #1\n  [   10.017908] Hardware name: Lenovo ThinkSystem SR950 [7X12CTO1WW]/[7X12CTO1WW], BIOS [PSE140J-2.30] 07/20/2021\n  [   10.017908] Workqueue: events_unbound padata_mt_helper\n  [   10.017908] RIP: 0010:padata_mt_helper+0x39/0xb0\n    :\n  [   10.017963] Call Trace:\n  [   10.017968]  \u003cTASK\u003e\n  [   10.018004]  ? padata_mt_helper+0x39/0xb0\n  [   10.018084]  process_one_work+0x174/0x330\n  [   10.018093]  worker_thread+0x266/0x3a0\n  [   10.018111]  kthread+0xcf/0x100\n  [   10.018124]  ret_from_fork+0x31/0x50\n  [   10.018138]  ret_from_fork_asm+0x1a/0x30\n  [   10.018147]  \u003c/TASK\u003e\n\nLooking at the padata_mt_helper() function, the only way a divide-by-0\npanic can happen is when ps-\u003echunk_size is 0.  The way that chunk_size is\ninitialized in padata_do_multithreaded(), chunk_size can be 0 when the\nmin_chunk in the passed-in padata_mt_job structure is 0.\n\nFix this divide-by-0 panic by making sure that chunk_size will be at least\n1 no matter what the input parameters are.","modified":"2026-03-20T12:37:46.944515Z","published":"2024-08-26T10:10:42.270Z","related":["ALSA-2024:8856","ALSA-2024:8870","MGASA-2024-0309","MGASA-2024-0310","SUSE-SU-2024:3190-1","SUSE-SU-2024:3194-1","SUSE-SU-2024:3195-1","SUSE-SU-2024:3209-1","SUSE-SU-2024:3383-1","SUSE-SU-2024:3483-1","SUSE-SU-2025:20044-1","SUSE-SU-2025:20047-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/43xxx/CVE-2024-43889.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/6d45e1c948a8b7ed6ceddb14319af69424db730c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8f5ffd2af7274853ff91d6cd62541191d9fbd10d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/924f788c906dccaca30acab86c7124371e1d6f2c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a29cfcb848c31f22b4de6a531c3e1d68c9bfe09f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ab8b397d5997d8c37610252528edc54bebf9f6d3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/da0ffe84fcc1627a7dff82c80b823b94236af905"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/43xxx/CVE-2024-43889.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-43889"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"004ed42638f4428e70ead59d170f3d17ff761a0f"},{"fixed":"ab8b397d5997d8c37610252528edc54bebf9f6d3"},{"fixed":"8f5ffd2af7274853ff91d6cd62541191d9fbd10d"},{"fixed":"a29cfcb848c31f22b4de6a531c3e1d68c9bfe09f"},{"fixed":"924f788c906dccaca30acab86c7124371e1d6f2c"},{"fixed":"da0ffe84fcc1627a7dff82c80b823b94236af905"},{"fixed":"6d45e1c948a8b7ed6ceddb14319af69424db730c"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-43889.json"}}],"schema_version":"1.7.5"}