CVE-2026-46178
Analyzed Analyzed - Analysis Complete
Resource Leak in Linux Kernel RDMA/mlx4 Driver

Publication date: 2026-05-28

Last updated on: 2026-06-11

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx4: Fix resource leak on error in mlx4_ib_create_srq() Sashiko points out that mlx4_srq_alloc() was not undone during error unwind, add the missing call to mlx4_srq_free().
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Meta Information
Published
2026-05-28
Last Modified
2026-06-11
Generated
2026-06-17
AI Q&A
2026-05-28
EPSS Evaluated
2026-06-16
NVD
CVE-2026-46178
EUVD
EUVD-2026-32805
Affected Vendors & Products
Showing 9 associated CPEs
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 5.16 (inc) to 6.1.175 (exc)
linux linux_kernel From 5.11 (inc) to 5.15.209 (exc)
linux linux_kernel From 6.19 (inc) to 7.0.7 (exc)
linux linux_kernel From 6.7 (inc) to 6.12.88 (exc)
linux linux_kernel From 6.2 (inc) to 6.6.140 (exc)
linux linux_kernel From 2.6.22 (inc) to 5.10.258 (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 is a resource leak in the Linux kernel related to RDMA (Remote Direct Memory Access) functionality, specifically in the mlx4 driver. The issue occurs in the mlx4_ib_create_srq() function where the mlx4_srq_alloc() resource allocation was not properly undone during error handling, leading to a resource leak. The fix involves adding a missing call to mlx4_srq_free() to properly release resources when an error occurs.

Impact Analysis

The resource leak could lead to exhaustion of system resources over time if errors occur repeatedly, potentially causing degraded system performance or instability in systems using the mlx4 RDMA driver. This could affect applications relying on RDMA for high-performance networking by causing failures or reduced availability.

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