CVE-2026-80822

A flaw was found in the Linux kernel's mailbox: mchp-ipc-sbi component. This vulnerability arises from a missing null check for a memory allocation function. If the memory allocation fails, it can lead to an error condition, potentially causing a denial of service (DoS) where the system becomes unstable or unresponsive.

This vulnerability is rated with a Moderate severity because triggering the failure requires an exceptional out-of-memory state during device initialization on specialized hardware, leading only to a local denial of service without compromising confidentiality or integrity. Supported Red Hat Enterprise Linux releases do not include the affected Microchip mailbox driver code. Consequently, standard Red Hat enterprise environments are not exposed to this flaw.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.