CVE-2024-43889

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.
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*

History

27 Aug 2024, 14:38

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 5.5
CWE CWE-369
First Time Linux linux Kernel
Linux
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: padata: corrige un posible pánico de división por 0 en padata_mt_helper() Nos encontramos con un pánico de división por 0 que no es fácilmente reproducible en padata.c en el momento del arranque. [ 10.017908] Vaya: error de división: 0000 1 PREEMPT SMP NOPTI [ 10.017908] CPU: 26 PID: 2627 Comm: kworker/u1666:1 No contaminado 6.10.0-15.el10.x86_64 #1 [ 10.017908] Nombre del hardware: Lenovo ThinkSystem SR950 [7X12CTO1WW]/[7X12CTO1WW], BIOS [PSE140J-2.30] 20/07/2021 [10.017908] Cola de trabajo: events_unbound padata_mt_helper [10.017908] RIP: 0010:padata_mt_helper+0x39/0xb0: [ 10.017963] Seguimiento de llamadas: [ 10.017968] &lt; TAREA&gt; [10.018004] ? padata_mt_helper+0x39/0xb0 [ 10.018084] proceso_one_work+0x174/0x330 [ 10.018093] trabajador_thread+0x266/0x3a0 [ 10.018111] kthread+0xcf/0x100 [ 10.018124] 1/0x50 [ 10.018138] ret_from_fork_asm+0x1a/0x30 [ 10.018147] Mirando la función padata_mt_helper(), la única forma en que puede ocurrir un pánico de división por 0 es cuando ps-&gt;chunk_size es 0. La forma en que chunk_size se inicializa en padata_do_multithreaded(), chunk_size puede ser 0 cuando min_chunk en la estructura pasada padata_mt_job es 0. Solucione este pánico de división por 0 asegurándose de que chunk_size sea al menos 1 sin importar cuáles sean los parámetros de entrada.
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/6d45e1c948a8b7ed6ceddb14319af69424db730c - () https://git.kernel.org/stable/c/6d45e1c948a8b7ed6ceddb14319af69424db730c - Patch
References () https://git.kernel.org/stable/c/8f5ffd2af7274853ff91d6cd62541191d9fbd10d - () https://git.kernel.org/stable/c/8f5ffd2af7274853ff91d6cd62541191d9fbd10d - Patch
References () https://git.kernel.org/stable/c/924f788c906dccaca30acab86c7124371e1d6f2c - () https://git.kernel.org/stable/c/924f788c906dccaca30acab86c7124371e1d6f2c - Patch
References () https://git.kernel.org/stable/c/a29cfcb848c31f22b4de6a531c3e1d68c9bfe09f - () https://git.kernel.org/stable/c/a29cfcb848c31f22b4de6a531c3e1d68c9bfe09f - Patch
References () https://git.kernel.org/stable/c/ab8b397d5997d8c37610252528edc54bebf9f6d3 - () https://git.kernel.org/stable/c/ab8b397d5997d8c37610252528edc54bebf9f6d3 - Patch
References () https://git.kernel.org/stable/c/da0ffe84fcc1627a7dff82c80b823b94236af905 - () https://git.kernel.org/stable/c/da0ffe84fcc1627a7dff82c80b823b94236af905 - Patch

26 Aug 2024, 11:15

Type Values Removed Values Added
New CVE

Information

Published : 2024-08-26 11:15

Updated : 2024-08-27 14:38


NVD link : CVE-2024-43889

Mitre link : CVE-2024-43889

CVE.ORG link : CVE-2024-43889


JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-369

Divide By Zero