CVE-2021-47099

In the Linux kernel, the following vulnerability has been resolved: veth: ensure skb entering GRO are not cloned. After commit d3256efd8e8b "veth: allow enabling NAPI even without XDP", if GRO is enabled on a veth device and TSO is disabled on the peer device, TCP skbs will go through the NAPI...

CVE-2021-47099

CVE-2021-47099 targets the Linux kernel veth path where GRO could process shared/cloned skbs when GRO is on, and no XDP program is attached. The fix is to skip the GRO stage for shared or cloned skbs, avoiding potential GRO-related corruption; the patch reverts to netif_receive_skb and introduces...

CVE-2021-47099 veth: ensure skb entering GRO are not cloned.

In the Linux kernel, the following vulnerability has been resolved: veth: ensure skb entering GRO are not cloned. After commit d3256efd8e8b "veth: allow enabling NAPI even without XDP", if GRO is enabled on a veth device and TSO is disabled on the peer device, TCP skbs will go through the NAPI...

Linux kernel security vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from a security issue in veth...

kernel: net: openvswitch: fix race on port output

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix race on port output assume the following setup on a single machine: 1. An openvswitch instance with one bridge and default flows 2. two network namespaces "server" and "client" 3. two ovs interfaces "server"...

kernel: Linux kernel: netfilter use-after-free vulnerability leading to denial of service

A flaw was found in the Linux kernel's netfilter component. When a virtual Ethernet veth device is released, the associated network namespace netns device memory may be prematurely freed. This can lead to a use-after-free vulnerability during the unregistration of netdev hooks. A local attacker...

kernel: veth: Fix use after free in XDP_REDIRECT

A use-after-free vulnerability has been identified within the vethconvertskbtoxdpbuff function of the Linux kernel's veth driver. The flaw stems from improper memory management during packet headroom expansion for XDP eXpress Data Path. Specifically, when the pskbexpandhead function allocates new...

PT-2025-18871 · Linux +2 · Linux Kernel +2

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 6.1.4-cloudflare-kasan-2023.1.2 Description: A use-after-free issue has been identified in the Linux kernel, specifically in the veth module. This issue arises when the pskb expand head function is used to expan...

AfEth withdrawing will not work when ratio will be 0

Lines of code Vulnerability details Impact AfEth withdrawing will not work when ratio will be 0. It will be not possible to withdraw. Proof of Concept Any ratio for the 2 tokens of afEth can be set by owner. AfEth.withdraw function will not work in case if ratio will be 0, which means that safEth...

K39655464: Linux kernel vulnerability CVE-2013-2017

Security Advisory Description The veth aka virtual Ethernet driver in the Linux kernel before 2.6.34 does not properly manage skbs during congestion, which allows remote attackers to cause a denial of service system crash by leveraging lack of skb consumption in conjunction with a double-free...

nmstate bug fix and enhancement update

An update is available for nmstate. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Nmstate is a library with an accompanying command line tool that manages host...

kernel: veth: Ensure eth header is in skb's linear part

In the Linux kernel, the following vulnerability has been resolved: veth: Ensure eth header is in skb's linear part After feeding a decapsulated packet to a veth device with actmirred, skbheadlen may be 0. But vethxmit calls devforwardskb, which expects at least ETHHLEN byte of linear data as...

OpenStack Nova-LXD bypass security restrictions

OpenStack Nova-LXD before 13.1.1 uses the wrong name for the veth pairs when applying Neutron security group rules for instances, which allows remote attackers to bypass intended security restrictions...

GSD-2022-1002467 veth: Ensure eth header is in skb's linear part

veth: Ensure eth header is in skb's linear part This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.9.311 by commit...

GSD-2022-1002393 veth: Ensure eth header is in skb's linear part

veth: Ensure eth header is in skb's linear part This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.14.276 by commit...

GSD-2022-1000435 veth: fix races around rq->rx_notify_masked

veth: fix races around rq-rxnotifymasked This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.24 by commit...

nmstate bug fix and enhancement update

Nmstate is a library with an accompanying command line tool that manages host networking settings in a declarative manner. Bug Fixes and Enhancements: nmstate changes names of existing ovs-bridge ports when attaching a veth BZ2034139 libnmstate expects VF to be named differently to its actual nam...

ALBA-2022:0360 nmstate bug fix and enhancement update

Nmstate is a library with an accompanying command line tool that manages host networking settings in a declarative manner. Bug Fixes and Enhancements: nmstate changes names of existing ovs-bridge ports when attaching a veth BZ2034139 libnmstate expects VF to be named differently to its actual nam...

GSD-2021-1002826 veth: ensure skb entering GRO are not cloned.

veth: ensure skb entering GRO are not cloned. This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.12 by commit...

PT-2021-8146 · Linux +4 · Linux Kernel +4

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 5.16.0-rc5+ Description: The vulnerability is related to the veth component of the Linux kernel, which fails to properly check for shared or cloned skbs when GRO is enabled on a veth device and TSO is disabled o...