CVE-2021-47160

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-47160
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.

7.1 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

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

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*
History

13 Mar 2025, 21:24

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/474a2ddaa192777522a7499784f1d60691cd831a - () https://git.kernel.org/stable/c/474a2ddaa192777522a7499784f1d60691cd831a - Patch
References () https://git.kernel.org/stable/c/4fe4e1f48ba119bdbc7c897c83b04ba0d08f5488 - () https://git.kernel.org/stable/c/4fe4e1f48ba119bdbc7c897c83b04ba0d08f5488 - Patch
References () https://git.kernel.org/stable/c/82ae35b6c14feae5f216913d5b433e143c756d4e - () https://git.kernel.org/stable/c/82ae35b6c14feae5f216913d5b433e143c756d4e - Patch
References () https://git.kernel.org/stable/c/ae389812733b1b1e8e07fcc238e41db166b5c78d - () https://git.kernel.org/stable/c/ae389812733b1b1e8e07fcc238e41db166b5c78d - Patch
References () https://git.kernel.org/stable/c/b91117b66fe875723a4e79ec6263526fffdb44d2 - () https://git.kernel.org/stable/c/b91117b66fe875723a4e79ec6263526fffdb44d2 - Patch
CPE cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.1
CWE NVD-CWE-noinfo
First Time Linux linux Kernel
Linux

21 Nov 2024, 06:35

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/474a2ddaa192777522a7499784f1d60691cd831a - () https://git.kernel.org/stable/c/474a2ddaa192777522a7499784f1d60691cd831a -
References () https://git.kernel.org/stable/c/4fe4e1f48ba119bdbc7c897c83b04ba0d08f5488 - () https://git.kernel.org/stable/c/4fe4e1f48ba119bdbc7c897c83b04ba0d08f5488 -
References () https://git.kernel.org/stable/c/82ae35b6c14feae5f216913d5b433e143c756d4e - () https://git.kernel.org/stable/c/82ae35b6c14feae5f216913d5b433e143c756d4e -
References () https://git.kernel.org/stable/c/ae389812733b1b1e8e07fcc238e41db166b5c78d - () https://git.kernel.org/stable/c/ae389812733b1b1e8e07fcc238e41db166b5c78d -
References () https://git.kernel.org/stable/c/b91117b66fe875723a4e79ec6263526fffdb44d2 - () https://git.kernel.org/stable/c/b91117b66fe875723a4e79ec6263526fffdb44d2 -

25 Mar 2024, 13:47

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: net: dsa: mt7530: corregir fugas de tráfico de VLAN El campo PCR_MATRIX se configuró en todos 1 cuando el filtrado de VLAN está habilitado, pero no se restableció cuando está deshabilitado, lo que puede causar fugas de tráfico: enlace ip agregar puente tipo br0 vlan_filtering 1 enlace ip agregar puente tipo br1 vlan_filtering 1 conjunto de enlaces ip swp0 master br0 conjunto de enlaces ip swp1 maestro br1 conjunto de enlaces ip br0 puente tipo vlan_filtering 0 conjunto de enlaces ip br1 tipo puente vlan_filtering 0 # tráfico en br0 y br1 comenzarán a filtrarse entre sí. Como port_bridge_{add,del} ha configurado PCR_MATRIX correctamente, elimine la escritura PCR_MATRIX de mt7530_port_set_vlan_aware.

25 Mar 2024, 10:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-03-25 10:15

Updated : 2025-03-13 21:24

NVD link : CVE-2021-47160

Mitre link : CVE-2021-47160

CVE.ORG link : CVE-2021-47160

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo