traffic control

CVE-2026-31422 is a classic example of how a small assumption in the Linux networking stack can turn into a kernel crash. The flaw lives in net/sched/cls_flow, where flow_change() can dereference b->q to derive a default baseclass even when the filter is attached to a shared block that...

Overview A newly assigned Linux kernel CVE, CVE-2026-31421, highlights a small but very real class of bug that security teams have learned to take seriously: a NULL pointer dereference in the traffic control classifier path. The flaw sits in net/sched/cls_fw, the classic firewall-style...

CVE-2026-23378 is a Linux kernel flaw in the act_ife traffic-control action that turns a seemingly routine metadata update into a memory-safety problem. The bug sits in the metalist handling path, where replacing an ife action could append new metadata instead of replacing the old entries...

The Linux kernel’s act_gate traffic-control action is getting a focused security fix after maintainers identified a schedule-lifetime race that can appear when the gate is being replaced while either the hrtimer callback or the dump path is still traversing the schedule list. The upstream patch...

The Linux kernel networking scheduler received a surgical but consequential change that was recorded as CVE‑2025‑37798: maintainers removed the historical check of sch->q.qlen (the qdisc’s queue length) before calling qdisc_tree_reduce_backlog(), after first making all qlen_notify() callbacks...

A compact but consequential Linux kernel information‑leak fix has been published under CVE‑2025‑40279: a small change in the traffic‑control connmark action (act_connmark) zero‑initializes a local struct (tc_ife / opt) in tcf_connmark_dump to stop uninitialized padding bytes from being copied...

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Hola, For Win XP Pro I was using Traffic Shaper XP, its free and as long as installed on each individual machine and setup properly I can limit each PC on my networks bandwidth usage at any given time. It just runs in the background. Dont get me wrong I have like a T2 Down stream and a T1...