CVE-2024-43889

MEDIUM EPSS 14.6%
Published Aug 26, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Aug 26, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: padata: Fix possible divide-by-0 panic in padata_mt_helper() We are hit with a not easily reproducible divide-by-0 panic in padata.c at bootup time. [ 10.017908] Oops: divide error: 0000 1 PREEMPT SMP NOPTI [ 10.017908] CPU: 26 PID: 2627 Comm: kworker/u1666:1 Not tainted 6.10.0-15.el10.x86_64 #1 [ 10.017908] Hardware name: Lenovo ThinkSystem SR950 [7X12CTO1WW]/[7X12CTO1WW], BIOS [PSE140J-2.30] 07/20/2021 [ 10.017908] Workqueue: events_unbound padata_mt_helper [ 10.017908] RIP: 0010:padata_mt_helper+0x39/0xb0 : [ 10.017963] Call Trace: [ 10.017968] <TASK> [ 10.018004] ? padata_mt_helper+0x39/0xb0 [ 10.018084] process_one_work+0x174/0x330 [ 10.018093] worker_thread+0x266/0x3a0 [ 10.018111] kthread+0xcf/0x100 [ 10.018124] ret_from_fork+0x31/0x50 [ 10.018138] ret_from_fork_asm+0x1a/0x30 [ 10.018147] </TASK> Looking at the padata_mt_helper() function, the only way a divide-by-0 panic can happen is when ps->chunk_size is 0. The way that chunk_size is initialized in padata_do_multithreaded(), chunk_size can be 0 when the min_chunk in the passed-in padata_mt_job structure is 0. Fix this divide-by-0 panic by making sure that chunk_size will be at least 1 no matter what the input parameters are.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
14.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-369

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel*≥5.8  –  <5.10.224
linuxlinux_kernel*≥5.11  –  <5.15.165
linuxlinux_kernel*≥5.16  –  <6.1.105
linuxlinux_kernel*≥6.2  –  <6.6.46
linuxlinux_kernel*≥6.7  –  <6.10.5
linuxlinux_kernel6.11any
linuxlinux_kernel6.11any

References 11

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-265688.html
  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-355557.html
  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-613116.html
  • git.kernel.org https://git.kernel.org/stable/c/6d45e1c948a8b7ed6ceddb14319af69424db730c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8f5ffd2af7274853ff91d6cd62541191d9fbd10d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/924f788c906dccaca30acab86c7124371e1d6f2c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a29cfcb848c31f22b4de6a531c3e1d68c9bfe09f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ab8b397d5997d8c37610252528edc54bebf9f6d3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/da0ffe84fcc1627a7dff82c80b823b94236af905
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/6d45e1c948a8b7ed6ceddb14319af69424db730c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8f5ffd2af7274853ff91d6cd62541191d9fbd10d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/924f788c906dccaca30acab86c7124371e1d6f2c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a29cfcb848c31f22b4de6a531c3e1d68c9bfe09f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ab8b397d5997d8c37610252528edc54bebf9f6d3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/da0ffe84fcc1627a7dff82c80b823b94236af905
    Patch