CVE-2026-23263
Undergoing Analysis Undergoing Analysis - In Progress
Memory Leak in Linux Kernel io_uring Component Fixed

Publication date: 2026-03-18

Last updated on: 2026-05-22

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: io_uring/zcrx: fix page array leak d9f595b9a65e ("io_uring/zcrx: fix leaking pages on sg init fail") fixed a page leakage but didn't free the page array, release it as well.
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Meta Information
Published
2026-03-18
Last Modified
2026-05-22
Generated
2026-06-16
AI Q&A
2026-03-18
EPSS Evaluated
2026-06-15
NVD
CVE-2026-23263
EUVD
EUVD-2026-12900
Affected Vendors & Products
Showing 9 associated CPEs
Vendor Product Version / Range
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel From 6.17 (inc) to 6.18.10 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-401 The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
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Executive Summary

This vulnerability in the Linux kernel involves the io_uring subsystem, specifically related to the zcrx component. The issue was a page array leak where, although leaking pages on scatter-gather (sg) initialization failure were fixed, the page array itself was not freed properly. The fix ensures that the page array is also released, preventing resource leakage.

Impact Analysis

The vulnerability can lead to resource leakage in the Linux kernel, specifically leaking memory pages and page arrays during certain io_uring operations. This could potentially degrade system performance or stability over time due to unreleased memory resources.

Compliance Impact

I don't know

Detection Guidance

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Mitigation Strategies

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