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.
References
Configurations
Configuration 1 (hide)
|
History
13 Mar 2025, 21:24
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | NVD-CWE-noinfo | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.1 |
| First Time |
Linux linux Kernel
Linux |
|
| CPE | 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:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:* |
|
| References | () https://git.kernel.org/stable/c/474a2ddaa192777522a7499784f1d60691cd831a - Patch | |
| References | () https://git.kernel.org/stable/c/4fe4e1f48ba119bdbc7c897c83b04ba0d08f5488 - Patch | |
| References | () https://git.kernel.org/stable/c/82ae35b6c14feae5f216913d5b433e143c756d4e - Patch | |
| References | () https://git.kernel.org/stable/c/ae389812733b1b1e8e07fcc238e41db166b5c78d - Patch | |
| References | () https://git.kernel.org/stable/c/b91117b66fe875723a4e79ec6263526fffdb44d2 - Patch |
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