CVE-2021-47293 Vulnerability Details

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CVE-2021-47293 Metadata Quick Info

CVE Published: 21/05/2024 | CVE Updated: 04/11/2024 | CVE Year: 2021
Source: Linux | Vendor: Linux | Product: Linux
Status : PUBLISHED

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CVE-2021-47293 Description

In the Linux kernel, the following vulnerability has been resolved: net/sched: act_skbmod: Skip non-Ethernet packets Currently tcf_skbmod_act() assumes that packets use Ethernet as their L2 protocol, which is not always the case. As an example, for CAN devices: $ ip link add dev vcan0 type vcan $ ip link set up vcan0 $ tc qdisc add dev vcan0 root handle 1: htb $ tc filter add dev vcan0 parent 1: protocol ip prio 10 \ matchall action skbmod swap mac Doing the above silently corrupts all the packets. Do not perform skbmod actions for non-Ethernet packets.

Metrics

CVSS Version: 3.1 | Base Score: n/a
Vector: n/a

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l➤ Impact Metrics:
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    Integrity Impact (I)*
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Weakness Enumeration (CWE)

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Source: Linux

Common Attack Pattern Enumeration and Classification (CAPEC)

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Source: NVD (National Vulnerability Database).