CVE-2026-72065

A flaw was found in the Linux kernel's mana network driver. This vulnerability arises from the driver's failure to validate the packet length reported by the Network Interface Card (NIC) within the Receive Completion Queue Entry (RX CQE) before further processing. A malicious NIC, or an attacker controlling one, could exploit this by providing an intentionally malformed packet length that is larger than the actual received data. This can lead to out-of-bounds reads when processing network packets, potentially causing a kernel crash and a denial of service (DoS).

This vulnerability is rated as Moderate severity because successful exploitation requires an adversary to control or compromise the underlying virtual or physical network device to supply manipulated completion queue descriptors. Red Hat Enterprise Linux systems are only susceptible when utilizing Microsoft Azure Network Adapter (MANA) devices. Deployments running on platforms or hardware configurations that do not utilize this specific networking adapter remain unaffected.

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.

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.