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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-47160 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: net: dsa: mt7530: fix VLAN traffic leaks PCR_MATRIX field was set to all 1's when VLAN filtering is enabled, but was not reset when it is disabled, which may cause traffic leaks: ip link add br0 type bridge vlan_filtering 1 ip link add br1 type bridge vlan_filtering 1 ip link set swp0 master br0 ip link set swp1 master br1 ip link set br0 type bridge vlan_filtering 0 ip link set br1 type bridge vlan_filtering 0 # traffic in br0 and br1 will start leaking to each other As port_bridge_{add,del} have set up PCR_MATRIX properly, remove the PCR_MATRIX write from mt7530_port_set_vlan_aware.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/474a2ddaa192777522a7499784f1d60691cd831a Patch 
https://git.kernel.org/stable/c/474a2ddaa192777522a7499784f1d60691cd831a Patch 
https://git.kernel.org/stable/c/4fe4e1f48ba119bdbc7c897c83b04ba0d08f5488 Patch 
https://git.kernel.org/stable/c/4fe4e1f48ba119bdbc7c897c83b04ba0d08f5488 Patch 
https://git.kernel.org/stable/c/82ae35b6c14feae5f216913d5b433e143c756d4e Patch 
https://git.kernel.org/stable/c/82ae35b6c14feae5f216913d5b433e143c756d4e Patch 
https://git.kernel.org/stable/c/ae389812733b1b1e8e07fcc238e41db166b5c78d Patch 
https://git.kernel.org/stable/c/ae389812733b1b1e8e07fcc238e41db166b5c78d Patch 
https://git.kernel.org/stable/c/b91117b66fe875723a4e79ec6263526fffdb44d2 Patch 
https://git.kernel.org/stable/c/b91117b66fe875723a4e79ec6263526fffdb44d2 Patch 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47160
NVD Published Date:
03/25/2024
NVD Last Modified:
03/13/2025
Source:
kernel.org