github - ghsa-29wv-m5qw-5h7j

GHSA-29WV-M5QW-5H7J

Vulnerability from github – Published: 2025-06-18 12:30 – Updated: 2025-11-13 21:31

Details

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

bpf: Don't redirect packets with invalid pkt_len

Syzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any skbs, that is, the flow->head is null. The root cause, as the [2] says, is because that bpf_prog_test_run_skb() run a bpf prog which redirects empty skbs. So we should determine whether the length of the packet modified by bpf prog or others like bpf_prog_test is valid before forwarding it directly.

Severity ?

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49975"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-18T11:15:24Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Don\u0027t redirect packets with invalid pkt_len\n\nSyzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any\nskbs, that is, the flow-\u003ehead is null.\nThe root cause, as the [2] says, is because that bpf_prog_test_run_skb()\nrun a bpf prog which redirects empty skbs.\nSo we should determine whether the length of the packet modified by bpf\nprog or others like bpf_prog_test is valid before forwarding it directly.",
  "id": "GHSA-29wv-m5qw-5h7j",
  "modified": "2025-11-13T21:31:17Z",
  "published": "2025-06-18T12:30:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49975"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6204bf78b2a903b96ba43afff6abc0b04d6e0462"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72f2dc8993f10262092745a88cb2dd0fef094f23"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8b68e53d56697a59b5c53893b53f508bbdf272a0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a75987714bd2d8e59840667a28e15c1fa5c47554"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fd1894224407c484f652ad456e1ce423e89bb3eb"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49975 (GCVE-0-2022-49975)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:00 – Updated: 2025-06-18 11:00

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Don't redirect packets with invalid pkt_len Syzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any skbs, that is, the flow->head is null. The root cause, as the [2] says, is because that bpf_prog_test_run_skb() run a bpf prog which redirects empty skbs. So we should determine whether the length of the packet modified by bpf prog or others like bpf_prog_test is valid before forwarding it directly.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/8b68e53d56697a59b…
	https://git.kernel.org/stable/c/6204bf78b2a903b96…
	https://git.kernel.org/stable/c/a75987714bd2d8e59…
	https://git.kernel.org/stable/c/72f2dc8993f102620…
	https://git.kernel.org/stable/c/fd1894224407c484f…

Impacted products

Vendor

Product

Version

Linux

Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8b68e53d56697a59b5c53893b53f508bbdf272a0 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6204bf78b2a903b96ba43afff6abc0b04d6e0462 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a75987714bd2d8e59840667a28e15c1fa5c47554 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 72f2dc8993f10262092745a88cb2dd0fef094f23 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < fd1894224407c484f652ad456e1ce423e89bb3eb (git)

Linux

Unaffected: 5.4.212 , ≤ 5.4.* (semver)
Unaffected: 5.10.141 , ≤ 5.10.* (semver)
Unaffected: 5.15.65 , ≤ 5.15.* (semver)
Unaffected: 5.19.7 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)

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{
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        {
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            "include/linux/skbuff.h",
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            "net/core/dev.c"
          ],
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          "versions": [
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          "vendor": "Linux",
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              "status": "unaffected",
              "version": "5.10.141",
              "versionType": "semver"
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              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.65",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
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        }
      ],
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    "datePublished": "2025-06-18T11:00:38.157Z",
    "dateReserved": "2025-06-18T10:57:27.385Z",
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}

Sightings

Author	Source	Type	Date

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-29WV-M5QW-5H7J

CVE-2022-49975 (GCVE-0-2022-49975)

Tags

Sightings

Nomenclature