CVE-2024-27055

workqueue: Don't call cpumask_test_cpu() with -1 CPU in wq_update_node_max_active()

Severity Score

"-"

*CVSS v-

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved:

workqueue: Don't call cpumask_test_cpu() with -1 CPU in wq_update_node_max_active()

For wq_update_node_max_active(), @off_cpu of -1 indicates that no CPU is
going down. The function was incorrectly calling cpumask_test_cpu() with -1
CPU leading to oopses like the following on some archs:

Unable to handle kernel paging request at virtual address ffff0002100296e0
..
pc : wq_update_node_max_active+0x50/0x1fc
lr : wq_update_node_max_active+0x1f0/0x1fc
...
Call trace:
wq_update_node_max_active+0x50/0x1fc
apply_wqattrs_commit+0xf0/0x114
apply_workqueue_attrs_locked+0x58/0xa0
alloc_workqueue+0x5ac/0x774
workqueue_init_early+0x460/0x540
start_kernel+0x258/0x684
__primary_switched+0xb8/0xc0
Code: 9100a273 35000d01 53067f00 d0016dc1 (f8607a60)
---[ end trace 0000000000000000 ]---
Kernel panic - not syncing: Attempted to kill the idle task!
---[ end Kernel panic - not syncing: Attempted to kill the idle task! ]---

Fix it.

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: cola de trabajo: no llame a cpumask_test_cpu() con -1 CPU en wq_update_node_max_active() Para wq_update_node_max_active(), @off_cpu de -1 indica que no hay ninguna CPU fallando. La función llamaba incorrectamente a cpumask_test_cpu() con -1 CPU, lo que provocaba errores como los siguientes en algunos arcos: No se puede manejar la solicitud de paginación del kernel en la dirección virtual ffff0002100296e0 .. pc: wq_update_node_max_active+0x50/0x1fc lr: wq_update_node_max_active+0x1f0/0x1fc .. Seguimiento de llamadas: wq_update_node_max_active+0x50/0x1fc apply_wqattrs_commit+0xf0/0x114 apply_workqueue_attrs_locked+0x58/0xa0 alloc_workqueue+0x5ac/0x774 workqueue_init_early+0x460/0x540 start_kernel+0x258/0x68. 4 __primary_switched+0xb8/0xc0 Código: 9100a273 35000d01 53067f00 d0016dc1 (f8607a60) -- -[ end trace 0000000000000000 ]--- Pánico del kernel - no se sincroniza: ¡Se intentó finalizar la tarea inactiva! ---[ fin del pánico del kernel: no se sincroniza: ¡se intentó finalizar la tarea inactiva! ]--- Arreglalo.

*Credits: N/A

CVSS Scores

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-02-19 CVE Reserved
2024-05-01 CVE Published
2024-05-02 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (8)

URL	Tag	Source
https://git.kernel.org/stable/c/5a70baec2294e8a7d0fcc4558741c23e752dad5c	Vuln. Introduced
https://git.kernel.org/stable/c/843288afd3cc6f3342659c6cf81fc47684d25563	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/a75ac2693d734d20724f0e10e039ca85f1fcfc4e	2024-04-04
https://git.kernel.org/stable/c/adc646d2126988a64234502f579e4bc2b080d7cf	2024-04-04
https://git.kernel.org/stable/c/7df62b8cca38aa452b508b477b16544cba615084	2024-03-26
https://git.kernel.org/stable/c/38c19c44cc05ec1e84d2e31a9a289b83b6c7ec85	2024-03-26
https://git.kernel.org/stable/c/9fc557d489f8163c1aabcb89114b8eba960f4097	2024-03-26
https://git.kernel.org/stable/c/15930da42f8981dc42c19038042947b475b19f47	2024-01-31

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.6.23 < 6.6.25 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6.23 < 6.6.25"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.8.2 < 6.8.4 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.8.2 < 6.8.4"		en		Affected