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.
- 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
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
Which versions are affected by CVE-2026-82327?
How do I fix CVE-2026-82327?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-82327 being exploited?
There is no known exploitation of CVE-2026-82327 in the wild and no public exploit code.
Sources
Also known as AZL-98382, DEBIAN-CVE-2026-82327, GHSA-f53h-vhp4-v9wx, OESA-2026-4509, UBUNTU-CVE-2026-82327.