CVE-2026-74668

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

Description An issue exists in the tpacket snd() function where dev->hard header len is read independently during skb allocation and header construction within tpacket fill skb(). Concurrent netdevice reconfiguration can cause the reserved headroom to be smaller than the amount subsequently pushed or result in a negative value for copylen minus hard header len.

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