CVE-2026-46126
Received Received - Intake
RDMA/mana WQ Object Cleanup Flaw in Linux Kernel

Publication date: 2026-05-28

Last updated on: 2026-05-28

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--.
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Meta Information
Published
2026-05-28
Last Modified
2026-05-28
Generated
2026-06-17
AI Q&A
2026-05-28
EPSS Evaluated
2026-06-16
NVD
CVE-2026-46126
EUVD
EUVD-2026-32885
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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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.

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.
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