UBUNTU-CVE-2025-68325

In the Linux kernel, the following vulnerability has been resolved: net/sched: schcake: Fix incorrect qlen reduction in cakedrop In cakedrop, qdisctreereducebacklog is used to update the qlen and backlog of the qdisc hierarchy. Its caller, cakeenqueue, assumes that the parent qdisc will enqueue t...

CVE-2025-68325

CVE-2025-68325 is a Linux kernel vulnerability in the net/sched cake path. The fix addresses an incorrect qlen/backlog reduction in cake_drop when cake_enqueue() may return NET_XMIT_CN, which could leave the qdisc tree accounting inconsistent and lead to a NULL dereference (e.g., if the parent is...

CVE-2025-39766

In the Linux kernel, the following vulnerability has been resolved: net/sched: Make cakeenqueue return NETXMITCN when past bufferlimit The following setup can trigger a WARNING in htbactivate due to the condition: !cl-leaf.q-q.qlen tc qdisc del dev lo root tc qdisc add dev lo root handle 1: htb...