Executive Summary

Informations
Name CVE-2024-43889 First vendor Publication 2024-08-26
Vendor Cve Last vendor Modification 2024-08-27

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 5.5
Base Score 5.5 Environmental Score 5.5
impact SubScore 3.6 Temporal Score 5.5
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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]
[ 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]

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-43889

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-369 Divide By Zero

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 8
Os 3648

Sources (Detail)

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

Alert History

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Date Informations
2025-01-08 03:04:38
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2024-12-25 03:02:49
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2024-09-03 21:27:40
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2024-08-27 21:27:40
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2024-08-26 17:27:26
  • First insertion