Red Hat Enterprise Linux Rpmio Support resource consumption

Summaryinfo

A vulnerability, which was classified as critical, has been found in Red Hat Enterprise Linux, Hardened Images and OpenShift Container Platform. The impacted element is an unknown function of the component Rpmio Support. The manipulation leads to resource consumption. This vulnerability is referenced as CVE-2026-92823. The attack can only be performed from a local environment. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Red Hat Enterprise Linux, Hardened Images and OpenShift Container Platform (affected version unknown). This issue affects an unknown functionality of the component Rpmio Support. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. The summary by CVE is:

A flaw was found in libmodulemd. In builds with rpmio support enabled, compressed modulemd YAML is decompressed through a custom read handler that does not enforce a cumulative decompressed-size limit before parsing. An attacker who can supply a highly compressible compressed YAML file can cause excessive CPU and memory consumption, resulting in a denial of service.

The advisory is shared at access.redhat.com. The identification of this vulnerability is CVE-2026-92823 since 09/16/2026. The exploitation is known to be easy. An attack has to be approached locally. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/21/2026).

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

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

Productinfo

Type

• Operating System

Vendor

• Red Hat

Name

• Enterprise Linux
• Hardened Images
• OpenShift Container Platform

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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