# CVE-2026-104045: Sssd: sssd: denial of service via race condition in autofs responder

> A local attacker can cause a denial of service in the SSSD autofs responder by exploiting a race condition that leads to memory leaks and service crashes.

- **Severity:** Medium 4.7 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/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:** 6 Oct 2026
- **Updated:** 16 Oct 2026
- **Also known as:** DEBIAN-CVE-2026-104045, GHSA-8wp7-x59q-g576, UBUNTU-CVE-2026-104045

## What is CVE-2026-104045?

CVE-2026-104045 is a medium-severity vulnerability in Redhat Enterprise Linux, published on 6 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A flaw was found in SSSD. A local user can trigger a Denial of Service (DoS) by exploiting a race condition in the autofs responder between asynchronous enumeration completion and map invalidation. By repeatedly sending concurrent map enumeration and invalidation requests, an attacker can cause memory to leak, leading to excessive memory consumption that can disrupt or crash the autofs service.

Weakness: CWE-772 (Missing Release of Resource after Effective Lifetime)

## Which versions are affected by CVE-2026-104045?

It affects 3 products.


Products: Fedoraproject Sssd, Redhat Enterprise Linux, Redhat Openshift Container Platform.

## How do I fix CVE-2026-104045?

Apply the vendor's patch.

## Is CVE-2026-104045 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-104045 exists.

## Other vulnerabilities in Redhat Enterprise Linux

- [CVE-2022-4254](https://insights.sbomify.com/CVE-2022-4254/): Other in SSSD (high 8.8)
- [CVE-2012-3462](https://insights.sbomify.com/CVE-2012-3462/): Auth bypass in sssd (high 8.8)
- [CVE-2026-104048](https://insights.sbomify.com/CVE-2026-104048/): Sssd: sssd: authorization bypass via cross-domain username collision in hbac evaluation (medium 6.8)
- [CVE-2015-5292](https://insights.sbomify.com/CVE-2015-5292/): Denial of service in n/a (medium 6.8)
- [CVE-2026-12610](https://insights.sbomify.com/CVE-2026-12610/): Sssd: use-after-free crash in sssd' 'sssd_pam' process (medium 6.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-104045 and fix it if it is affected.

What it is: CVE-2026-104045 is a medium-severity vulnerability in Redhat Enterprise Linux, published on 6 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-104045 exists.

Affected product: Redhat Enterprise 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-2026-104045/ (Markdown: https://insights.sbomify.com/CVE-2026-104045/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-104045
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-104045
- OSV: https://osv.dev/vulnerability/CVE-2026-104045

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-104045/
Summaries are generated and may contain mistakes; the official description above is the record.