Linux · Linux Kernel · 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.