CVE-2026-46126

Analyzed Analyzed - Analysis Complete

RDMA/mana WQ Object Cleanup Flaw in Linux Kernel

Publication date: 2026-05-28

Last updated on: 2026-06-24

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/mana: Fix mana_destroy_wq_obj() cleanup in mana_ib_create_qp_rss() Sashiko points out there are two bugs here in the error unwind flow, both related to how the WQ table is unwound. First there is a double i-- on the first failure path due to the while loop having a i--, remove it. Second if mana_ib_install_cq_cb() fails then mana_create_wq_obj() is not undone due to the above i--.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-05-28

Last Modified

2026-06-24

Generated

2026-07-08

AI Q&A

2026-05-28

EPSS Evaluated

2026-07-06

NVD

CVE-2026-46126

EUVD

EUVD-2026-32885

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	From 6.13 (inc) to 6.18.30 (exc)
linux	linux_kernel	From 6.19 (inc) to 7.0.7 (exc)
linux	linux_kernel	From 6.8 (inc) to 6.12.88 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability exists in the Linux kernel's RDMA/mana component, specifically in the mana_destroy_wq_obj() cleanup function used in mana_ib_create_qp_rss().

There are two bugs related to the error unwind flow and how the Work Queue (WQ) table is unwound:

A double decrement (i--) occurs on the first failure path due to the while loop also having an i--, which should be removed.
If the function mana_ib_install_cq_cb() fails, then the cleanup function mana_create_wq_obj() is not properly undone because of the above decrement issue.

Impact Analysis

This vulnerability involves bugs in the error unwind flow of the RDMA/mana component in the Linux kernel, specifically related to the cleanup process in mana_destroy_wq_obj() during mana_ib_create_qp_rss().

The issues include a double decrement operation and incomplete cleanup when certain functions fail, which could potentially lead to improper resource management or instability in the kernel's RDMA functionality.

Hi! I’m here to help you understand CVE-2026-46126. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70