0.0
NA
CVE-2025-23138
Linux Kernel Pipe Buffer Underflow Vulnerability
Description

In the Linux kernel, the following vulnerability has been resolved: watch_queue: fix pipe accounting mismatch Currently, watch_queue_set_size() modifies the pipe buffers charged to user->pipe_bufs without updating the pipe->nr_accounted on the pipe itself, due to the if (!pipe_has_watch_queue()) test in pipe_resize_ring(). This means that when the pipe is ultimately freed, we decrement user->pipe_bufs by something other than what than we had charged to it, potentially leading to an underflow. This in turn can cause subsequent too_many_pipe_buffers_soft() tests to fail with -EPERM. To remedy this, explicitly account for the pipe usage in watch_queue_set_size() to match the number set via account_pipe_buffers() (It's unclear why watch_queue_set_size() does not update nr_accounted; it may be due to intentional overprovisioning in watch_queue_set_size()?)

INFO

Published Date :

April 16, 2025, 3:16 p.m.

Last Modified :

April 17, 2025, 8:22 p.m.

Source :

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

Remotely Exploitable :

No

Impact Score :

Exploitability Score :

Affected Products

The following products are affected by CVE-2025-23138 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-2025-23138.

URL Resource
https://git.kernel.org/stable/c/205028ebba838938d3b264dda1d0708fa7fe1ade
https://git.kernel.org/stable/c/2d680b988656bb556c863d8b46d9b9096842bf3d
https://git.kernel.org/stable/c/471c89b7d4f58bd6082f7c1fe14d4ca15c7f1284
https://git.kernel.org/stable/c/56ec918e6c86c1536870e4373e91eddd0c44245f
https://git.kernel.org/stable/c/6dafa27764183738dc5368b669b71e3d0d154f12
https://git.kernel.org/stable/c/8658c75343ed00e5e154ebbe24335f51ba8db547
https://git.kernel.org/stable/c/d40e3537265dea9e3c33021874437ff26dc18787
https://git.kernel.org/stable/c/f13abc1e8e1a3b7455511c4e122750127f6bc9b0

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-2025-23138 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2025-23138 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

    Apr. 16, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: watch_queue: fix pipe accounting mismatch Currently, watch_queue_set_size() modifies the pipe buffers charged to user->pipe_bufs without updating the pipe->nr_accounted on the pipe itself, due to the if (!pipe_has_watch_queue()) test in pipe_resize_ring(). This means that when the pipe is ultimately freed, we decrement user->pipe_bufs by something other than what than we had charged to it, potentially leading to an underflow. This in turn can cause subsequent too_many_pipe_buffers_soft() tests to fail with -EPERM. To remedy this, explicitly account for the pipe usage in watch_queue_set_size() to match the number set via account_pipe_buffers() (It's unclear why watch_queue_set_size() does not update nr_accounted; it may be due to intentional overprovisioning in watch_queue_set_size()?)
    Added Reference https://git.kernel.org/stable/c/205028ebba838938d3b264dda1d0708fa7fe1ade
    Added Reference https://git.kernel.org/stable/c/2d680b988656bb556c863d8b46d9b9096842bf3d
    Added Reference https://git.kernel.org/stable/c/471c89b7d4f58bd6082f7c1fe14d4ca15c7f1284
    Added Reference https://git.kernel.org/stable/c/56ec918e6c86c1536870e4373e91eddd0c44245f
    Added Reference https://git.kernel.org/stable/c/6dafa27764183738dc5368b669b71e3d0d154f12
    Added Reference https://git.kernel.org/stable/c/8658c75343ed00e5e154ebbe24335f51ba8db547
    Added Reference https://git.kernel.org/stable/c/d40e3537265dea9e3c33021874437ff26dc18787
    Added Reference https://git.kernel.org/stable/c/f13abc1e8e1a3b7455511c4e122750127f6bc9b0
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-2025-23138 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-2025-23138 weaknesses.

NONE - Vulnerability Scoring System
: