CVE-2026-89564

A flaw was found in the Linux kernel's IP multicast forwarding. When a prefetched socket is destroyed, a subsequent operation to free a network packet skb can attempt to access the already freed socket memory. This use-after-free vulnerability can be triggered by a remote attacker sending special...

DEBIAN-CVE-2026-89564

In the Linux kernel, the following vulnerability has been resolved: ip: orphan prefetched skbs before multicast forwarding IPv4 and IPv6 input preserve an skb-sk association installed by bpfskassign so that local delivery can use the selected socket under RCU. Both address families can also...

PT-2026-90280

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description IPv4 and IPv6 input preserve an skb-sk association installed by the bpf sk assign function to allow local delivery to use the selected socket under RCU Read-Copy-Update. Both address...