Vulnerability-Lookup

GHSA-633G-3JMF-HX7H

Vulnerability from github – Published: 2026-05-28 12:30 – Updated: 2026-06-01 18:31

Details

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

batman-adv: fix integer overflow on buff_pos

Fixing an integer overflow present in batadv_iv_ogm_send_to_if. The size check is done using the int type in batadv_iv_ogm_aggr_packet whereas the buff_pos variable uses the s16 type. This could lead to an out-of-bound read.

Severity

8.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-46198"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-28T10:16:35Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: fix integer overflow on buff_pos\n\nFixing an integer overflow present in batadv_iv_ogm_send_to_if. The size\ncheck is done using the int type in batadv_iv_ogm_aggr_packet whereas the\nbuff_pos variable uses the s16 type. This could lead to an out-of-bound\nread.",
  "id": "GHSA-633g-3jmf-hx7h",
  "modified": "2026-06-01T18:31:41Z",
  "published": "2026-05-28T12:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46198"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0799e5943611006b346b8813c7daf7dd5aa26bfd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/10bb1f366d884d506c38a947b43026a75d1afe9a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/867cd090760e8f5cd206f387b47ff9c56fac04e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/96c9c0ed9a9579a9085765aceaa4556a6666eb82"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/974542d1efc48b7e9fe16184e647615cba39969b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b252797bfced986d6d92ec2f4cfcca842ce8aa78"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf872db54f91ffe70104b98c20068b2d5910e018"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f61499359fa529f0d45a53bf7c573a49eb6322e6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-46198 (GCVE-0-2026-46198)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:40 – Updated: 2026-08-05 12:30

Title

batman-adv: fix integer overflow on buff_pos

Summary

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix integer overflow on buff_pos Fixing an integer overflow present in batadv_iv_ogm_send_to_if. The size check is done using the int type in batadv_iv_ogm_aggr_packet whereas the buff_pos variable uses the s16 type. This could lead to an out-of-bound read.

Severity

8.8 (High)


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

Assigner

Linux mitre root Scorecard

References

8 references

URL	Tags
https://git.kernel.org/stable/c/867cd090760e8f5cd…
https://git.kernel.org/stable/c/10bb1f366d884d506…
https://git.kernel.org/stable/c/96c9c0ed9a9579a90…
https://git.kernel.org/stable/c/f61499359fa529f0d…
https://git.kernel.org/stable/c/974542d1efc48b7e9…
https://git.kernel.org/stable/c/bf872db54f91ffe70…
https://git.kernel.org/stable/c/b252797bfced986d6…
https://git.kernel.org/stable/c/0799e5943611006b3…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: c6c8fea29769d998d94fcec9b9f14d4b52b349d3 , < 867cd090760e8f5cd206f387b47ff9c56fac04e9 (git) Affected: c6c8fea29769d998d94fcec9b9f14d4b52b349d3 , < 10bb1f366d884d506c38a947b43026a75d1afe9a (git) Affected: c6c8fea29769d998d94fcec9b9f14d4b52b349d3 , < 96c9c0ed9a9579a9085765aceaa4556a6666eb82 (git) Affected: c6c8fea29769d998d94fcec9b9f14d4b52b349d3 , < f61499359fa529f0d45a53bf7c573a49eb6322e6 (git) Affected: c6c8fea29769d998d94fcec9b9f14d4b52b349d3 , < 974542d1efc48b7e9fe16184e647615cba39969b (git) Affected: c6c8fea29769d998d94fcec9b9f14d4b52b349d3 , < bf872db54f91ffe70104b98c20068b2d5910e018 (git) Affected: c6c8fea29769d998d94fcec9b9f14d4b52b349d3 , < b252797bfced986d6d92ec2f4cfcca842ce8aa78 (git) Affected: c6c8fea29769d998d94fcec9b9f14d4b52b349d3 , < 0799e5943611006b346b8813c7daf7dd5aa26bfd (git)
Linux	Linux	Affected: 2.6.38 Unaffected: 0 , < 2.6.38 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.90 , ≤ 6.12.* (semver) Unaffected: 6.18.32 , ≤ 6.18.* (semver) Unaffected: 7.0.9 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/batman-adv/bat_iv_ogm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "867cd090760e8f5cd206f387b47ff9c56fac04e9",
              "status": "affected",
              "version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
              "versionType": "git"
            },
            {
              "lessThan": "10bb1f366d884d506c38a947b43026a75d1afe9a",
              "status": "affected",
              "version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
              "versionType": "git"
            },
            {
              "lessThan": "96c9c0ed9a9579a9085765aceaa4556a6666eb82",
              "status": "affected",
              "version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
              "versionType": "git"
            },
            {
              "lessThan": "f61499359fa529f0d45a53bf7c573a49eb6322e6",
              "status": "affected",
              "version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
              "versionType": "git"
            },
            {
              "lessThan": "974542d1efc48b7e9fe16184e647615cba39969b",
              "status": "affected",
              "version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
              "versionType": "git"
            },
            {
              "lessThan": "bf872db54f91ffe70104b98c20068b2d5910e018",
              "status": "affected",
              "version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
              "versionType": "git"
            },
            {
              "lessThan": "b252797bfced986d6d92ec2f4cfcca842ce8aa78",
              "status": "affected",
              "version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
              "versionType": "git"
            },
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              "status": "affected",
              "version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.38"
            },
            {
              "lessThan": "2.6.38",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.90",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.32",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.258",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.209",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.175",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.140",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.90",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.32",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.9",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: fix integer overflow on buff_pos\n\nFixing an integer overflow present in batadv_iv_ogm_send_to_if. The size\ncheck is done using the int type in batadv_iv_ogm_aggr_packet whereas the\nbuff_pos variable uses the s16 type. This could lead to an out-of-bound\nread."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - batman-adv OGMs are layer-2 mesh management frames received from neighboring mesh nodes; they are not IP-routable, so an attacker must be on the same mesh/L2 (WiFi/Ethernet) segment.\nAC:L - The attacker fully controls the crafted OGM\u0027s size and tvlv_len, and in a mesh deployed over a large-MTU interface (required for packet_len\u003e32767) can reliably and repeatedly trigger the overflow; the negative-offset check passes for nearly all values.\nPR:N - batman-adv performs no authentication of OGMs; any node on the mesh can broadcast frames that the victim node automatically processes and forwards.\nUI:N - Received OGMs are parsed, forwarded and aggregated entirely by the kernel without any user action.\nS:U - The out-of-bounds read/write corrupts kernel memory within the same kernel security authority; no boundary (VM/IOMMU) is crossed.\nC:H - The wrapped negative buff_pos causes reads of kernel memory before/around the skb buffer (tvlv_len and OGM fields), an out-of-bounds read of attacker-influenced kernel memory.\nI:H - The loop body writes ogm-\u003eflags (set/clear BATADV_DIRECTLINK) at an attacker-influenced negative offset from skb-\u003edata, an out-of-bounds write giving a memory-corruption primitive.\nA:H - Continued iteration over wild pointers dereferences out-of-bounds/unmapped memory, reliably causing a kernel oops/panic."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:30:22.970Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/867cd090760e8f5cd206f387b47ff9c56fac04e9"
        },
        {
          "url": "https://git.kernel.org/stable/c/10bb1f366d884d506c38a947b43026a75d1afe9a"
        },
        {
          "url": "https://git.kernel.org/stable/c/96c9c0ed9a9579a9085765aceaa4556a6666eb82"
        },
        {
          "url": "https://git.kernel.org/stable/c/f61499359fa529f0d45a53bf7c573a49eb6322e6"
        },
        {
          "url": "https://git.kernel.org/stable/c/974542d1efc48b7e9fe16184e647615cba39969b"
        },
        {
          "url": "https://git.kernel.org/stable/c/bf872db54f91ffe70104b98c20068b2d5910e018"
        },
        {
          "url": "https://git.kernel.org/stable/c/b252797bfced986d6d92ec2f4cfcca842ce8aa78"
        },
        {
          "url": "https://git.kernel.org/stable/c/0799e5943611006b346b8813c7daf7dd5aa26bfd"
        }
      ],
      "title": "batman-adv: fix integer overflow on buff_pos",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46198",
    "datePublished": "2026-05-28T09:40:14.558Z",
    "dateReserved": "2026-05-13T15:03:33.104Z",
    "dateUpdated": "2026-08-05T12:30:22.970Z",
    "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-633G-3JMF-HX7H

CVE-2026-46198 (GCVE-0-2026-46198)

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