Red Hat Enterprise Linux Hardened Images src.rpm popen command injection

Summaryinfo

A vulnerability classified as very critical was found in Red Hat Enterprise Linux. This vulnerability affects the function popen of the file src.rpm of the component Hardened Images. Such manipulation leads to command injection. This vulnerability is documented as CVE-2026-95521. The attack needs to be performed locally. There is not any exploit available.

Detailsinfo

A vulnerability was found in Red Hat Enterprise Linux (version unknown). It has been rated as very critical. Affected by this issue is the function popen of the file src.rpm of the component Hardened Images. The manipulation with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A command injection flaw was found in rpm. Installing or rebuilding a source RPM whose source or spec file basenames contain a %() macro construct causes rpm to execute an attacker-controlled shell command via popen() while relocating the source file list. This allows arbitrary command execution as the invoking (typically non-root) user, simply by installing, rebuilding, or otherwise processing an untrusted .src.rpm.

The advisory is available at access.redhat.com. This vulnerability is handled as CVE-2026-95521 since 09/22/2026. The exploitation is known to be easy. Local access is required to approach this attack. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 09/24/2026). This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

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

License

• commercial

Website

• Vendor: https://www.redhat.com/

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