CVE-2026-98394 af_unix: Return immediately when manage_oob() returns NULL for 0-length buffer.

In the Linux kernel, the following vulnerability has been resolved: afunix: Return immediately when manageoob returns NULL for 0-length buffer. Fahad Alharbi reported that recv0, MSGPEEK triggers busy-wait in unixstreamreadgeneric if recv is blocking and the last skb in the queue is MSGOOB skb. I...