CVE-2026-53236 tcp: restrict SO_ATTACH_FILTER to priv users

In the Linux kernel, the following vulnerability has been resolved: tcp: restrict SOATTACHFILTER to priv users This patch restricts the use of SOATTACHFILTER cBPF on TCP sockets to users with CAPNETADMIN capability. This blocks potential side-channel attack where an unprivileged application...

kernel: TCP-spoofed ghost ACKs and leak leak initial sequence number

A flaw was found in the Linux kernel. Two TCP spoofing primitives exist where an attacker can brute force the server-chosen send window by acknowledging data that was never sent, called "ghost ACKs." There are side channels that also allow the attacker to leak the otherwise secret server-chosen...