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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-03-18
Last Modified
2026-05-22
Generated
2026-07-06
AI Q&A
2026-03-18
EPSS Evaluated
2026-07-05
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)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
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.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
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

I don't know

Mitigation Strategies

I don't know

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-23263. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart