CVE - CVE-2025-23138

CVE-ID
CVE-2025-23138	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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()?)
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/205028ebba838938d3b264dda1d0708fa7fe1ade URL:https://git.kernel.org/stable/c/205028ebba838938d3b264dda1d0708fa7fe1ade MISC:https://git.kernel.org/stable/c/2d680b988656bb556c863d8b46d9b9096842bf3d URL:https://git.kernel.org/stable/c/2d680b988656bb556c863d8b46d9b9096842bf3d MISC:https://git.kernel.org/stable/c/471c89b7d4f58bd6082f7c1fe14d4ca15c7f1284 URL:https://git.kernel.org/stable/c/471c89b7d4f58bd6082f7c1fe14d4ca15c7f1284 MISC:https://git.kernel.org/stable/c/56ec918e6c86c1536870e4373e91eddd0c44245f URL:https://git.kernel.org/stable/c/56ec918e6c86c1536870e4373e91eddd0c44245f MISC:https://git.kernel.org/stable/c/6dafa27764183738dc5368b669b71e3d0d154f12 URL:https://git.kernel.org/stable/c/6dafa27764183738dc5368b669b71e3d0d154f12 MISC:https://git.kernel.org/stable/c/8658c75343ed00e5e154ebbe24335f51ba8db547 URL:https://git.kernel.org/stable/c/8658c75343ed00e5e154ebbe24335f51ba8db547 MISC:https://git.kernel.org/stable/c/d40e3537265dea9e3c33021874437ff26dc18787 URL:https://git.kernel.org/stable/c/d40e3537265dea9e3c33021874437ff26dc18787 MISC:https://git.kernel.org/stable/c/f13abc1e8e1a3b7455511c4e122750127f6bc9b0 URL:https://git.kernel.org/stable/c/f13abc1e8e1a3b7455511c4e122750127f6bc9b0
Assigning CNA
kernel.org
Date Record Created
20250111	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250111)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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