github - ghsa-qqw5-j897-27cf

ghsa-qqw5-j897-27cf

Vulnerability from github

Published

2024-05-21 15:31

Modified

2024-05-21 15:31

Details

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

net/sched: act_skbmod: Skip non-Ethernet packets

Currently tcf_skbmod_act() assumes that packets use Ethernet as their L2 protocol, which is not always the case. As an example, for CAN devices:

$ ip link add dev vcan0 type vcan
$ ip link set up vcan0
$ tc qdisc add dev vcan0 root handle 1: htb
$ tc filter add dev vcan0 parent 1: protocol ip prio 10 \
    matchall action skbmod swap mac

Doing the above silently corrupts all the packets. Do not perform skbmod actions for non-Ethernet packets.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2021-47293"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T15:15:17Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_skbmod: Skip non-Ethernet packets\n\nCurrently tcf_skbmod_act() assumes that packets use Ethernet as their L2\nprotocol, which is not always the case.  As an example, for CAN devices:\n\n\t$ ip link add dev vcan0 type vcan\n\t$ ip link set up vcan0\n\t$ tc qdisc add dev vcan0 root handle 1: htb\n\t$ tc filter add dev vcan0 parent 1: protocol ip prio 10 \\\n\t\tmatchall action skbmod swap mac\n\nDoing the above silently corrupts all the packets.  Do not perform skbmod\nactions for non-Ethernet packets.",
  "id": "GHSA-qqw5-j897-27cf",
  "modified": "2024-05-21T15:31:41Z",
  "published": "2024-05-21T15:31:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47293"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/071729150be9e1d1b851b70efb6d91ee9269d57b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34f1e1f657fae2891b485a3b2b95fe4d2aef9f0d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/727d6a8b7ef3d25080fad228b2c4a1d4da5999c6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a88414fb1117f2fe65fb88e45ba694e1d09d5024"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e4fdca366806f6bab374d1a95e626a10a3854b0c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

cve-2021-47293

Vulnerability from cvelistv5

Published

2024-05-21 14:35

Modified

2024-11-04 12:03

Severity ?

Summary

net/sched: act_skbmod: Skip non-Ethernet packets

References

▼	URL	Tags
	https://git.kernel.org/stable/c/e4fdca366806f6bab374d1a95e626a10a3854b0c
	https://git.kernel.org/stable/c/a88414fb1117f2fe65fb88e45ba694e1d09d5024
	https://git.kernel.org/stable/c/071729150be9e1d1b851b70efb6d91ee9269d57b
	https://git.kernel.org/stable/c/34f1e1f657fae2891b485a3b2b95fe4d2aef9f0d
	https://git.kernel.org/stable/c/727d6a8b7ef3d25080fad228b2c4a1d4da5999c6

Impacted products

▼	Vendor	Product
	Linux	Linux
	Linux	Linux

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47293",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-28T19:25:44.173169Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:15:12.783Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:32:08.508Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/e4fdca366806f6bab374d1a95e626a10a3854b0c"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/a88414fb1117f2fe65fb88e45ba694e1d09d5024"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/071729150be9e1d1b851b70efb6d91ee9269d57b"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/34f1e1f657fae2891b485a3b2b95fe4d2aef9f0d"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/727d6a8b7ef3d25080fad228b2c4a1d4da5999c6"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/sched/act_skbmod.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e4fdca366806",
              "status": "affected",
              "version": "86da71b57383",
              "versionType": "git"
            },
            {
              "lessThan": "a88414fb1117",
              "status": "affected",
              "version": "86da71b57383",
              "versionType": "git"
            },
            {
              "lessThan": "071729150be9",
              "status": "affected",
              "version": "86da71b57383",
              "versionType": "git"
            },
            {
              "lessThan": "34f1e1f657fa",
              "status": "affected",
              "version": "86da71b57383",
              "versionType": "git"
            },
            {
              "lessThan": "727d6a8b7ef3",
              "status": "affected",
              "version": "86da71b57383",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/sched/act_skbmod.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.9"
            },
            {
              "lessThan": "4.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.199",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.136",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.13.*",
              "status": "unaffected",
              "version": "5.13.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_skbmod: Skip non-Ethernet packets\n\nCurrently tcf_skbmod_act() assumes that packets use Ethernet as their L2\nprotocol, which is not always the case.  As an example, for CAN devices:\n\n\t$ ip link add dev vcan0 type vcan\n\t$ ip link set up vcan0\n\t$ tc qdisc add dev vcan0 root handle 1: htb\n\t$ tc filter add dev vcan0 parent 1: protocol ip prio 10 \\\n\t\tmatchall action skbmod swap mac\n\nDoing the above silently corrupts all the packets.  Do not perform skbmod\nactions for non-Ethernet packets."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-11-04T12:03:07.839Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e4fdca366806f6bab374d1a95e626a10a3854b0c"
        },
        {
          "url": "https://git.kernel.org/stable/c/a88414fb1117f2fe65fb88e45ba694e1d09d5024"
        },
        {
          "url": "https://git.kernel.org/stable/c/071729150be9e1d1b851b70efb6d91ee9269d57b"
        },
        {
          "url": "https://git.kernel.org/stable/c/34f1e1f657fae2891b485a3b2b95fe4d2aef9f0d"
        },
        {
          "url": "https://git.kernel.org/stable/c/727d6a8b7ef3d25080fad228b2c4a1d4da5999c6"
        }
      ],
      "title": "net/sched: act_skbmod: Skip non-Ethernet packets",
      "x_generator": {
        "engine": "bippy-9e1c9544281a"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47293",
    "datePublished": "2024-05-21T14:35:17.373Z",
    "dateReserved": "2024-05-21T13:27:52.130Z",
    "dateUpdated": "2024-11-04T12:03:07.839Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Action not permitted