Red Hat Enterprise Linux FileList repo_write out-of-bounds write

Summaryinfo

A vulnerability marked as problematic has been reported in Red Hat Enterprise Linux, Hardened Images, OpenShift Container Platform, Satellite and Update Infrastructure. This vulnerability affects the function repo_write of the component FileList. Performing a manipulation results in out-of-bounds write. This vulnerability is cataloged as CVE-2026-82327. The attack must be initiated from a local position. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in Red Hat Enterprise Linux, Hardened Images, OpenShift Container Platform, Satellite and Update Infrastructure. This affects the function repo_write of the component FileList. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability. The summary by CVE is:

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.

The advisory is shared at access.redhat.com. This vulnerability is uniquely identified as CVE-2026-82327 since 08/28/2026. The exploitability is told to be easy. An attack has to be approached locally. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/28/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Operating System

Vendor

• Red Hat

Name

• Enterprise Linux
• Hardened Images
• OpenShift Container Platform
• Satellite
• Update Infrastructure

License

• commercial

Website

• Vendor: https://www.redhat.com/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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