github - ghsa-9r37-jj74-qvw9

ghsa-9r37-jj74-qvw9

Vulnerability from github

Published

2024-03-25 12:30

Modified

2024-03-25 12:30

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47160"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-25T10:15:08Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: mt7530: fix VLAN traffic leaks\n\nPCR_MATRIX field was set to all 1\u0027s when VLAN filtering is enabled, but\nwas not reset when it is disabled, which may cause traffic leaks:\n\n\tip link add br0 type bridge vlan_filtering 1\n\tip link add br1 type bridge vlan_filtering 1\n\tip link set swp0 master br0\n\tip link set swp1 master br1\n\tip link set br0 type bridge vlan_filtering 0\n\tip link set br1 type bridge vlan_filtering 0\n\t# traffic in br0 and br1 will start leaking to each other\n\nAs port_bridge_{add,del} have set up PCR_MATRIX properly, remove the\nPCR_MATRIX write from mt7530_port_set_vlan_aware.",
  "id": "GHSA-9r37-jj74-qvw9",
  "modified": "2024-03-25T12:30:51Z",
  "published": "2024-03-25T12:30:51Z",
  "references": [
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      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47160"
    },
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cve-2021-47160

Vulnerability from cvelistv5

Published

2024-03-25 09:16

Modified

2024-11-04 12:00

Severity ?

Summary

net: dsa: mt7530: fix VLAN traffic leaks

References

▼	URL	Tags
	https://git.kernel.org/stable/c/ae389812733b1b1e8e07fcc238e41db166b5c78d
	https://git.kernel.org/stable/c/4fe4e1f48ba119bdbc7c897c83b04ba0d08f5488
	https://git.kernel.org/stable/c/b91117b66fe875723a4e79ec6263526fffdb44d2
	https://git.kernel.org/stable/c/82ae35b6c14feae5f216913d5b433e143c756d4e
	https://git.kernel.org/stable/c/474a2ddaa192777522a7499784f1d60691cd831a

Impacted products

▼	Vendor	Product
	Linux	Linux
	Linux	Linux

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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