CVE-2025-23138
watch_queue: fix pipe accounting mismatch
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 :
Nov. 4, 2025, 5 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Linux kernel to the latest version.
- Apply the patch for the watch_queue pipe accounting issue.
- Verify the pipe accounting logic after the update.
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.
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.
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.
-
Initial Analysis by [email protected]
Nov. 04, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.13.11 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.14 up to (excluding) 6.14.2 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.10.210 up to (excluding) 5.10.236 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.15.149 up to (excluding) 5.15.180 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.1.76 up to (excluding) 6.1.134 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.6.15 up to (excluding) 6.6.87 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7.3 up to (excluding) 6.12.23 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Added Reference Type kernel.org: https://git.kernel.org/stable/c/205028ebba838938d3b264dda1d0708fa7fe1ade Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/2d680b988656bb556c863d8b46d9b9096842bf3d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/471c89b7d4f58bd6082f7c1fe14d4ca15c7f1284 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/56ec918e6c86c1536870e4373e91eddd0c44245f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6dafa27764183738dc5368b669b71e3d0d154f12 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/8658c75343ed00e5e154ebbe24335f51ba8db547 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d40e3537265dea9e3c33021874437ff26dc18787 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f13abc1e8e1a3b7455511c4e122750127f6bc9b0 Types: Patch Added Reference Type CVE: https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html Types: Mailing List Added Reference Type CVE: https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html Types: Mailing List -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 03, 2025
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html Added Reference https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html -
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