# CVE-2026-92488: RDMA/erdma: complete object teardown when the destroy command fails

> A failure in RDMA object destruction leaks resources, potentially leading to resource exhaustion and denial of service in the Linux kernel.

- **Severity:** High 7.0 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 17 Sep 2026
- **Updated:** 21 Oct 2026
- **Also known as:** AZL-102408, BELL-CVE-2026-92488, DEBIAN-CVE-2026-92488, GHSA-rcjj-6j56-f2wh, UBUNTU-CVE-2026-92488

## What is CVE-2026-92488?

CVE-2026-92488 is a high-severity denial of service vulnerability in Linux, published on 17 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In the Linux kernel, the following vulnerability has been resolved:

RDMA/erdma: complete object teardown when the destroy command fails

erdma_destroy_qp(), erdma_destroy_cq(), erdma_dereg_mr(), and
erdma_destroy_ah() returned early when erdma_post_cmd_wait() failed,
leaking the queue buffers, MTTs, doorbells and the STAG, QPN, CQN and AHN
identifiers. A command timeout clears ERDMA_CMDQ_STATE_OK_BIT and
permanently disables the command queue, so no retry can succeed; the RDMA
core keeps the object after a failed destructor and forced uverbs cleanup
then nulls the pointers, making the resources unreachable.

Warn on failure but release every software-owned resource and return
success, since during terminal destruction the hardware command result is
only diagnostic.

## Which versions are affected by CVE-2026-92488?


## How do I fix CVE-2026-92488?

Apply the vendor's patch.

## Is CVE-2026-92488 being exploited?

There is no known exploitation of CVE-2026-92488 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-92488 and fix it if it is affected.

What it is: CVE-2026-92488 is a high-severity denial of service vulnerability in Linux, published on 17 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-92488 in the wild and no public exploit code.

Affected product: Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-92488/ (Markdown: https://insights.sbomify.com/CVE-2026-92488/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-92488
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-92488
- OSV: https://osv.dev/vulnerability/CVE-2026-92488

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-92488/
Summaries are generated and may contain mistakes; the official description above is the record.