CVE-2025-21954

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

Description A vulnerability in the Linux kernel has been resolved, related to the netmem feature. The issue allowed the transmission of unreadable network memory (netmem) packets into the device's transmit (TX) path, potentially causing the device to call dma-mapping APIs on dma addresses that should not be passed to it. This could lead to security issues. The problem was fixed by preventing the transmission of unreadable skbs. Testing was done using the tc redirect configuration.

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