CVE-2026-63983

A flaw was found in the Linux kernel's network emulator netem component. This vulnerability occurs when netem duplicates a packet and re-enqueues it, leading to a recursive packet duplication loop if multiple netem instances are configured. This uncontrolled recursion can exhaust system resources...

CVE-2026-63983

In the Linux kernel, the following vulnerability has been resolved: net/sched: fix packet loop on netem when duplicate is on When netem duplicates a packet it re-enqueues the copy at the root qdisc. If another netem sits in the tree the copy can be duplicated again, recursing until the stack or...

CVE-2026-63983 net/sched: fix packet loop on netem when duplicate is on

In the Linux kernel, the following vulnerability has been resolved: net/sched: fix packet loop on netem when duplicate is on When netem duplicates a packet it re-enqueues the copy at the root qdisc. If another netem sits in the tree the copy can be duplicated again, recursing until the stack or...

CVE-2026-63983 net/sched: fix packet loop on netem when duplicate is on

In the Linux kernel, the following vulnerability has been resolved: net/sched: fix packet loop on netem when duplicate is on When netem duplicates a packet it re-enqueues the copy at the root qdisc. If another netem sits in the tree the copy can be duplicated again, recursing until the stack or...

PT-2026-61300

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A packet loop occurs in the netem Network Emulator module when the duplicate feature is enabled. When netem duplicates a packet, it re-enqueues the copy at the root qdisc Queueing...

kernel: net_sched: ets: Fix double list add in class with netem as child qdisc

A use-after-free vulnerability was found in the Linux kernel’s netem qdisc. This issue occurs when it incorrectly manages duplicated packets in classful parent qdiscs. This leads to a corrupted internal state and eventual dereferencing of freed memory, resulting in unpredictable behavior, system...

CVE-2024-45016 netem: fix return value if duplicate enqueue fails

In the Linux kernel, the following vulnerability has been resolved: netem: fix return value if duplicate enqueue fails There is a bug in netemenqueue introduced by commit 5845f706388a "net: netem: fix skb length BUGON in skbtosgvec" that can lead to a use-after-free. This commit made netemenqueue...

Scientific Linux Security Update : kernel on SL4.x i386/x86_64

CVE-2005-4881 kernel: netlink: fix numerous padding memleaks CVE-2009-3228 kernel: tc: uninitialised kernel memory leak This update fixes the following security issues : - multiple, missing initialization flaws were found in the Linux kernel. Padding data in several core network structures was no...

CentOS Update for kernel CESA-2009:1522 centos4 i386

The remote host is missing an update for the SPDX-FileCopyrightText: 2011 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription scriptxrefname:"URL",...

kernel security update

CentOS Errata and Security Advisory CESA-2009:1522 Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 4. This update has been rated as having moderate security impact by the Red Hat Security Response Team. Updated 21st July 20...