CVE-2026-99045

A flaw was found in the Linux kernel's IBM Virtual Ethernet (ibmveth) driver. This issue can lead to a denial of service (DoS) or system instability due to improper resource cleanup during device activation. When memory allocation fails after registering a logical network with the underlying hypervisor, the driver unmaps memory buffers without deregistering the interface, leaving stale memory references in the hypervisor. A local user with administrative privileges could trigger this condition when attempting to bring up the network interface under low-memory conditions.

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.