Memory Leak in Linux Kernel IB/mthca Component on Syscall Failure

Publication date: 2026-03-25

Last updated on: 2026-05-29

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: IB/mthca: Add missed mthca_unmap_user_db() for mthca_create_srq() Fix a user triggerable leak on the system call failure path.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-03-25

Last Modified

2026-05-29

Generated

2026-07-06

AI Q&A

2026-03-25

EPSS Evaluated

2026-07-05

NVD

CVE-2026-23289

EUVD

EUVD-2026-15218

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	From 6.19 (inc) to 6.19.7 (exc)
linux	linux_kernel	7.0
linux	linux_kernel	From 6.13 (inc) to 6.18.17 (exc)
linux	linux_kernel	From 6.2 (inc) to 6.6.130 (exc)
linux	linux_kernel	From 6.7 (inc) to 6.12.77 (exc)
linux	linux_kernel	From 5.11 (inc) to 5.15.203 (exc)
linux	linux_kernel	From 5.16 (inc) to 6.1.167 (exc)
linux	linux_kernel	From 2.6.14 (inc) to 5.10.253 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is in the Linux kernel related to the IB/mthca driver. It involves a missing call to mthca_unmap_user_db() in the function mthca_create_srq(). This omission causes a resource leak when a system call fails, which can be triggered by a user.

Impact Analysis

The vulnerability can lead to a resource leak in the system when certain system calls fail. This leak could potentially degrade system performance or stability over time if exploited repeatedly by a user.

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