0.0
NA
CVE-2025-21728
Linux Kernel BPF Signal Injection Privilege Escalation Vulnerability
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()`.

INFO

Published Date :

Feb. 27, 2025, 2:15 a.m.

Last Modified :

Feb. 27, 2025, 2:15 a.m.

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Remotely Exploitable :

No

Impact Score :

Exploitability Score :

Affected Products

The following products are affected by CVE-2025-21728 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-21728.

URL Resource
https://git.kernel.org/stable/c/092fc76b7ab4163e008f9cde596a58dad2108260
https://git.kernel.org/stable/c/78b97783496b454435639937db3303e900a24d3f
https://git.kernel.org/stable/c/87c544108b612512b254c8f79aa5c0a8546e2cc4
https://git.kernel.org/stable/c/be42a09fe898635b0093c0c8dac1bfabe225c240
https://git.kernel.org/stable/c/eeef8e65041a031bd8a747a392c14b76a123a12c

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-21728 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2025-21728 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Feb. 27, 2025

    Action Type Old Value New Value
    Added 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()`.
    Added Reference https://git.kernel.org/stable/c/092fc76b7ab4163e008f9cde596a58dad2108260
    Added Reference https://git.kernel.org/stable/c/78b97783496b454435639937db3303e900a24d3f
    Added Reference https://git.kernel.org/stable/c/87c544108b612512b254c8f79aa5c0a8546e2cc4
    Added Reference https://git.kernel.org/stable/c/be42a09fe898635b0093c0c8dac1bfabe225c240
    Added Reference https://git.kernel.org/stable/c/eeef8e65041a031bd8a747a392c14b76a123a12c
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-21728 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-21728 weaknesses.

NONE - Vulnerability Scoring System
: