# CVE-2026-82327: Memory corruption in Red Hat Enterprise Linux 10

> A crafted .solv cache file causes an out-of-bounds write in libsolv, leading to a crash in package managers like dnf or zypper.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 28 Aug 2026
- **Updated:** 21 Oct 2026
- **Also known as:** AZL-98382, DEBIAN-CVE-2026-82327, GHSA-f53h-vhp4-v9wx, OESA-2026-4509, UBUNTU-CVE-2026-82327

## What is CVE-2026-82327?

CVE-2026-82327 is a medium-severity memory corruption vulnerability in Red Hat Enterprise Linux 10, published on 28 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

A flaw was found in libsolv, a dependency-resolution library used by RPM-based package managers such as dnf and zypper to work with .solv repository cache files. When libsolv rewrites a .solv cache file, it reads directory-id values from the file's compressed filelist data without validating that they fall within the expected range. A corrupted or specially crafted .solv cache file (for example, one left in a torn state after an unclean system shutdown) can cause an out-of-bounds memory write when a tool such as dnf, yum, or zypper next processes it. Successful exploitation is expected to result in a crash of the affected tool (denial of service); it is not expected to allow arbitrary code execution because the out-of-bounds write always stores a fixed, non-attacker-controlled value.

Weakness: CWE-129 (Improper Validation of Array Index)

## Which versions are affected by CVE-2026-82327?


## How do I fix CVE-2026-82327?

Apply the vendor's patch.

## Is CVE-2026-82327 being exploited?

There is no known exploitation of CVE-2026-82327 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-82327 and fix it if it is affected.

What it is: CVE-2026-82327 is a medium-severity memory corruption vulnerability in Red Hat Enterprise Linux 10, published on 28 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-82327 in the wild and no public exploit code.

Affected product: Red Hat Enterprise Linux 10. 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-2026-82327/ (Markdown: https://insights.sbomify.com/CVE-2026-82327/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-82327
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-82327
- OSV: https://osv.dev/vulnerability/CVE-2026-82327

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-82327/
Summaries are generated and may contain mistakes; the official description above is the record.