CVE-2025-21855

Name of the Vulnerable Software and Affected Versions: Linux kernel (affected versions not specified)

Description: A use-after-free issue exists in the Linux kernel, specifically in the ibmvnic module. After sending a buffer to VIOS, it is invalid to access the skb memory because the VIOS can trigger an interrupt to free this memory at any point. A race between reading skb->len and freeing the skb is possible, resulting in a use-after-free error. This issue can occur especially during LPM.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.