Vulnerability-Lookup

GHSA-VM8V-8WGX-PM6R

Vulnerability from github – Published: 2026-10-06 09:31 – Updated: 2026-10-06 09:31

Details

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

wifi: cfg80211: check IP header size in cfg80211_classify8021d()

A frame that looks like IP can be transmitted, but be too short, so the DS field is read incorrectly:

BUG: KMSAN: uninit-value in cfg80211_classify8021d+0x99d/0x12b0 net/wireless/util.c:1027 cfg80211_classify8021d+0x99d/0x12b0 net/wireless/util.c:1027 ieee80211_select_queue+0x37a/0x9e0 net/mac80211/wme.c:180 __ieee80211_subif_start_xmit+0x60f/0x1d90 net/mac80211/tx.c:4304 ieee80211_subif_start_xmit+0xa8/0x6d0 net/mac80211/tx.c:4538 ... packet_sendmsg+0x9173/0xa2a0 net/packet/af_packet.c:3108

Use skb_header_pointer() like the MPLS case.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98345"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-06T09:18:27Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: check IP header size in cfg80211_classify8021d()\n\nA frame that looks like IP can be transmitted, but be too short, so\nthe DS field is read incorrectly:\n\n  BUG: KMSAN: uninit-value in cfg80211_classify8021d+0x99d/0x12b0 net/wireless/util.c:1027\n   cfg80211_classify8021d+0x99d/0x12b0 net/wireless/util.c:1027\n   ieee80211_select_queue+0x37a/0x9e0 net/mac80211/wme.c:180\n   __ieee80211_subif_start_xmit+0x60f/0x1d90 net/mac80211/tx.c:4304\n   ieee80211_subif_start_xmit+0xa8/0x6d0 net/mac80211/tx.c:4538\n   ...\n   packet_sendmsg+0x9173/0xa2a0 net/packet/af_packet.c:3108\n\nUse skb_header_pointer() like the MPLS case.",
  "id": "GHSA-vm8v-8wgx-pm6r",
  "modified": "2026-10-06T09:31:36Z",
  "published": "2026-10-06T09:31:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98345"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/12c0abd4d1c1b04a7663d04ba85268bc9ad9c017"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/18d5547327c202cda33ad2bbd203220c2c62c8a7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3ff17ffa8d02e0e3f6b2f6e57af4aac511f5b734"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/48b2c5c628b09cf36cbeca53e0432fc2a7518be7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/65893c8d28f239c7ddad5a83683be193a9133e9b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a2cdb4a675ca04c4ac8cc962848082d8ce065008"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c4fbcf1e614ef0755fcc751fdfca21b0bf4e0ef7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f33ad4e2f846e55cf4637419268f093ac9f1a765"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98345 (GCVE-0-2026-98345)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:46 – Updated: 2026-10-06 08:46

Title

wifi: cfg80211: check IP header size in cfg80211_classify8021d()

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: check IP header size in cfg80211_classify8021d() A frame that looks like IP can be transmitted, but be too short, so the DS field is read incorrectly: BUG: KMSAN: uninit-value in cfg80211_classify8021d+0x99d/0x12b0 net/wireless/util.c:1027 cfg80211_classify8021d+0x99d/0x12b0 net/wireless/util.c:1027 ieee80211_select_queue+0x37a/0x9e0 net/mac80211/wme.c:180 __ieee80211_subif_start_xmit+0x60f/0x1d90 net/mac80211/tx.c:4304 ieee80211_subif_start_xmit+0xa8/0x6d0 net/mac80211/tx.c:4538 ... packet_sendmsg+0x9173/0xa2a0 net/packet/af_packet.c:3108 Use skb_header_pointer() like the MPLS case.

Severity

No CVSS data available.

Assigner

Linux mitre root Scorecard

References

8 references

URL	Tags
https://git.kernel.org/stable/c/18d5547327c202cda…
https://git.kernel.org/stable/c/3ff17ffa8d02e0e3f…
https://git.kernel.org/stable/c/c4fbcf1e614ef0755…
https://git.kernel.org/stable/c/12c0abd4d1c1b04a7…
https://git.kernel.org/stable/c/f33ad4e2f846e55cf…
https://git.kernel.org/stable/c/a2cdb4a675ca04c4a…
https://git.kernel.org/stable/c/65893c8d28f239c7d…
https://git.kernel.org/stable/c/48b2c5c628b09cf36…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 , < 18d5547327c202cda33ad2bbd203220c2c62c8a7 (git) Affected: e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 , < 3ff17ffa8d02e0e3f6b2f6e57af4aac511f5b734 (git) Affected: e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 , < c4fbcf1e614ef0755fcc751fdfca21b0bf4e0ef7 (git) Affected: e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 , < 12c0abd4d1c1b04a7663d04ba85268bc9ad9c017 (git) Affected: e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 , < f33ad4e2f846e55cf4637419268f093ac9f1a765 (git) Affected: e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 , < a2cdb4a675ca04c4ac8cc962848082d8ce065008 (git) Affected: e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 , < 65893c8d28f239c7ddad5a83683be193a9133e9b (git) Affected: e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 , < 48b2c5c628b09cf36cbeca53e0432fc2a7518be7 (git)
Linux	Linux	Affected: 2.6.31 Unaffected: 0 , < 2.6.31 (semver) Unaffected: 5.10.271 , ≤ 5.10.* (semver) Unaffected: 5.15.222 , ≤ 5.15.* (semver) Unaffected: 6.1.189 , ≤ 6.1.* (semver) Unaffected: 6.6.158 , ≤ 6.6.* (semver) Unaffected: 6.12.112 , ≤ 6.12.* (semver) Unaffected: 6.18.54 , ≤ 6.18.* (semver) Unaffected: 7.2.8 , ≤ 7.2.* (semver) Unaffected: 7.3-rc4 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/wireless/util.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "18d5547327c202cda33ad2bbd203220c2c62c8a7",
              "status": "affected",
              "version": "e31a16d6f64ef0e324c6f54d5112703c3f13a9c4",
              "versionType": "git"
            },
            {
              "lessThan": "3ff17ffa8d02e0e3f6b2f6e57af4aac511f5b734",
              "status": "affected",
              "version": "e31a16d6f64ef0e324c6f54d5112703c3f13a9c4",
              "versionType": "git"
            },
            {
              "lessThan": "c4fbcf1e614ef0755fcc751fdfca21b0bf4e0ef7",
              "status": "affected",
              "version": "e31a16d6f64ef0e324c6f54d5112703c3f13a9c4",
              "versionType": "git"
            },
            {
              "lessThan": "12c0abd4d1c1b04a7663d04ba85268bc9ad9c017",
              "status": "affected",
              "version": "e31a16d6f64ef0e324c6f54d5112703c3f13a9c4",
              "versionType": "git"
            },
            {
              "lessThan": "f33ad4e2f846e55cf4637419268f093ac9f1a765",
              "status": "affected",
              "version": "e31a16d6f64ef0e324c6f54d5112703c3f13a9c4",
              "versionType": "git"
            },
            {
              "lessThan": "a2cdb4a675ca04c4ac8cc962848082d8ce065008",
              "status": "affected",
              "version": "e31a16d6f64ef0e324c6f54d5112703c3f13a9c4",
              "versionType": "git"
            },
            {
              "lessThan": "65893c8d28f239c7ddad5a83683be193a9133e9b",
              "status": "affected",
              "version": "e31a16d6f64ef0e324c6f54d5112703c3f13a9c4",
              "versionType": "git"
            },
            {
              "lessThan": "48b2c5c628b09cf36cbeca53e0432fc2a7518be7",
              "status": "affected",
              "version": "e31a16d6f64ef0e324c6f54d5112703c3f13a9c4",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/wireless/util.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.31"
            },
            {
              "lessThan": "2.6.31",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.271",
                  "versionStartIncluding": "2.6.31",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.222",
                  "versionStartIncluding": "2.6.31",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.189",
                  "versionStartIncluding": "2.6.31",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.158",
                  "versionStartIncluding": "2.6.31",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.112",
                  "versionStartIncluding": "2.6.31",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.54",
                  "versionStartIncluding": "2.6.31",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.8",
                  "versionStartIncluding": "2.6.31",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc4",
                  "versionStartIncluding": "2.6.31",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: check IP header size in cfg80211_classify8021d()\n\nA frame that looks like IP can be transmitted, but be too short, so\nthe DS field is read incorrectly:\n\n  BUG: KMSAN: uninit-value in cfg80211_classify8021d+0x99d/0x12b0 net/wireless/util.c:1027\n   cfg80211_classify8021d+0x99d/0x12b0 net/wireless/util.c:1027\n   ieee80211_select_queue+0x37a/0x9e0 net/mac80211/wme.c:180\n   __ieee80211_subif_start_xmit+0x60f/0x1d90 net/mac80211/tx.c:4304\n   ieee80211_subif_start_xmit+0xa8/0x6d0 net/mac80211/tx.c:4538\n   ...\n   packet_sendmsg+0x9173/0xa2a0 net/packet/af_packet.c:3108\n\nUse skb_header_pointer() like the MPLS case."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-06T08:46:34.719Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/18d5547327c202cda33ad2bbd203220c2c62c8a7"
        },
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          "url": "https://git.kernel.org/stable/c/3ff17ffa8d02e0e3f6b2f6e57af4aac511f5b734"
        },
        {
          "url": "https://git.kernel.org/stable/c/c4fbcf1e614ef0755fcc751fdfca21b0bf4e0ef7"
        },
        {
          "url": "https://git.kernel.org/stable/c/12c0abd4d1c1b04a7663d04ba85268bc9ad9c017"
        },
        {
          "url": "https://git.kernel.org/stable/c/f33ad4e2f846e55cf4637419268f093ac9f1a765"
        },
        {
          "url": "https://git.kernel.org/stable/c/a2cdb4a675ca04c4ac8cc962848082d8ce065008"
        },
        {
          "url": "https://git.kernel.org/stable/c/65893c8d28f239c7ddad5a83683be193a9133e9b"
        },
        {
          "url": "https://git.kernel.org/stable/c/48b2c5c628b09cf36cbeca53e0432fc2a7518be7"
        }
      ],
      "title": "wifi: cfg80211: check IP header size in cfg80211_classify8021d()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98345",
    "datePublished": "2026-10-06T08:46:34.719Z",
    "dateReserved": "2026-09-25T10:25:14.343Z",
    "dateUpdated": "2026-10-06T08:46:34.719Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-VM8V-8WGX-PM6R

CVE-2026-98345 (GCVE-0-2026-98345)

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