Vulnerability-Lookup

GHSA-5HXF-F4VP-6C88

Vulnerability from github – Published: 2025-03-10 21:31 – Updated: 2025-03-10 21:31

Details

In the Linux kernel, the following vulnerability has been resolved:

net: dsa: fix NULL pointer dereference in dsa_port_reset_vlan_filtering

The "ds" iterator variable used in dsa_port_reset_vlan_filtering() -> dsa_switch_for_each_port() overwrites the "dp" received as argument, which is later used to call dsa_port_vlan_filtering() proper.

As a result, switches which do enter that code path (the ones with vlan_filtering_is_global=true) will dereference an invalid dp in dsa_port_reset_vlan_filtering() after leaving a VLAN-aware bridge.

Use a dedicated "other_dp" iterator variable to avoid this from happening.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49582"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:33Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: fix NULL pointer dereference in dsa_port_reset_vlan_filtering\n\nThe \"ds\" iterator variable used in dsa_port_reset_vlan_filtering() -\u003e\ndsa_switch_for_each_port() overwrites the \"dp\" received as argument,\nwhich is later used to call dsa_port_vlan_filtering() proper.\n\nAs a result, switches which do enter that code path (the ones with\nvlan_filtering_is_global=true) will dereference an invalid dp in\ndsa_port_reset_vlan_filtering() after leaving a VLAN-aware bridge.\n\nUse a dedicated \"other_dp\" iterator variable to avoid this from\nhappening.",
  "id": "GHSA-5hxf-f4vp-6c88",
  "modified": "2025-03-10T21:31:10Z",
  "published": "2025-03-10T21:31:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49582"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1699b4d502eda3c7ea4070debad3ee570b5091b1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3240e12fe203a3a79b9814e83327106b770ed7b0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49582 (GCVE-0-2022-49582)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:23 – Updated: 2026-05-11 19:02

Title

net: dsa: fix NULL pointer dereference in dsa_port_reset_vlan_filtering

Summary

In the Linux kernel, the following vulnerability has been resolved: net: dsa: fix NULL pointer dereference in dsa_port_reset_vlan_filtering The "ds" iterator variable used in dsa_port_reset_vlan_filtering() -> dsa_switch_for_each_port() overwrites the "dp" received as argument, which is later used to call dsa_port_vlan_filtering() proper. As a result, switches which do enter that code path (the ones with vlan_filtering_is_global=true) will dereference an invalid dp in dsa_port_reset_vlan_filtering() after leaving a VLAN-aware bridge. Use a dedicated "other_dp" iterator variable to avoid this from happening.

Severity

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-476 - NULL Pointer Dereference

Assigner

Linux

References

2 references

URL	Tags
https://git.kernel.org/stable/c/3240e12fe203a3a79…
https://git.kernel.org/stable/c/1699b4d502eda3c7e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d0004a020bb50263de0e3e775c7b7c7a003e0e0c , < 3240e12fe203a3a79b9814e83327106b770ed7b0 (git) Affected: d0004a020bb50263de0e3e775c7b7c7a003e0e0c , < 1699b4d502eda3c7ea4070debad3ee570b5091b1 (git)
Linux	Linux	Affected: 5.16 Unaffected: 0 , < 5.16 (semver) Unaffected: 5.18.15 , ≤ 5.18.* (semver) Unaffected: 5.19 , ≤ * (original_commit_for_fix)

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  "containers": {
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        "metrics": [
          {
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              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T19:36:14.654442Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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          "programFiles": [
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    "datePublished": "2025-02-26T02:23:19.626Z",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-5HXF-F4VP-6C88

CVE-2022-49582 (GCVE-0-2022-49582)

Tags

Sightings

Nomenclature