CVE-2025-23138
What it is
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()?)
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 5.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Record status
- Analyzed
Affected
- Linux Kernel < 5.10.236
- Linux Kernel < 5.15.180
- Linux Kernel < 6.1.134
- Linux Kernel < 6.6.87
- Linux Kernel < 6.12.23
- Linux Kernel < 6.13.11
- Linux Kernel < 6.14.2
- Debian Linux 11.0
Attack profile CVSS 3.1 · 5.5
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2025-23138.md and follow it. Check whether this project is affected by CVE-2025-23138. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- 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
References
- 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
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html