Integer Underflow The advisory has been revoked - it doesn't affect any version of package kernel-headers (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL10-KERNELHEADERS-11226305
- published30 Jul 2025
- disclosed16 Apr 2025
Introduced: 16 Apr 2025
CVE-2025-23138 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-headers package and not the kernel-headers package as distributed by RHEL.
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()?)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2360211
- https://access.redhat.com/security/cve/CVE-2025-23138
- 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