IM
IronMonkey Threat Research

CVE-2025-21728 MEDIUM

Published: 2025-02-27 | Last Modified: 2026-05-12 | Status: Modified

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Send signals asynchronously if !preemptible BPF programs can execute in all kinds of contexts and when a program running in a non-preemptible context uses the bpf_send_signal() kfunc, it will cause issues because this kfunc can sleep. Change `irqs_disabled()` to `!preemptible()`.

Additional Descriptions (1)

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: Envía señales de forma asincrónica si los programas BPF !preemptible pueden ejecutarse en todo tipo de contextos y cuando un programa que se ejecuta en un contexto no preemptible utiliza la función kfunc bpf_send_signal(), causará problemas porque esta función kfunc puede suspenderse. Cambie `irqs_disabled()` a `!preemptible()`.

CVSS Metrics

Base Score: 5.5 (MEDIUM)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack VectorLOCAL
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactNONE
Integrity ImpactNONE
Availability ImpactHIGH

Source: [email protected]

Type: Primary

Exploitability Score: 1.8

Impact Score: 3.6

Weaknesses

Source Type Description
[email protected] Primary
en NVD-CWE-noinfo

Affected Products

Vendor Product Version Update Type
linux linux_kernel * <built-in method update of dict object at 0x7fd36b1fbdc0> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd308689100> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd36b8f5dc0> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd368d7f040> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd36b1fbe40> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd36b8f4380> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd2dbc09600> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd2d82758c0> Operating System
linux linux_kernel 5.6 <built-in method update of dict object at 0x7fd2dbc0a540> Operating System

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:5.6:-:*:*:*:*:*:*

References