CVE-2026-43099

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

Description A null pointer dereference exists in the icmp build probe() function. This occurs when the IPv6 stack is not active (specifically when CONFIG IPV6=m and not loaded), causing ipv6 stub->ipv6 dev find() to return ERR PTR(-EAFNOSUPPORT). Passing this error pointer to dev hold() results in a kernel crash.

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