Vulnerability-Lookup

GHSA-MQVV-MHQ8-MX45

Vulnerability from github – Published: 2026-06-24 18:32 – Updated: 2026-06-28 09:31

Details

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

net: bcmgenet: fix off-by-one in bcmgenet_put_txcb

The write_ptr points to the next open tx_cb. We want to return the tx_cb that gets rewinded, so we must rewind the pointer first then return the tx_cb that it points to. That way the txcb can be correctly cleaned up.

Severity

9.8 (Critical)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53088"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-193"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-24T17:17:22Z",
    "severity": "CRITICAL"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bcmgenet: fix off-by-one in bcmgenet_put_txcb\n\nThe write_ptr points to the next open tx_cb. We want to return the\ntx_cb that gets rewinded, so we must rewind the pointer first then\nreturn the tx_cb that it points to. That way the txcb can be correctly\ncleaned up.",
  "id": "GHSA-mqvv-mhq8-mx45",
  "modified": "2026-06-28T09:31:41Z",
  "published": "2026-06-24T18:32:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53088"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/14e9f86564fff7bcf7f45c1b69080e837b31d185"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/29394f722f620281f2ee9a47f947734e53d72c90"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2a74590170427a3ca7cc4bb8690cdd559129c29c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4cab761fc51c65aef741fcece4a18f3554edbc09"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/57f3f53d2c9c5a9e133596e2f7bc1c50688a6d38"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72df896e31ddd06fcc5a789f025ad7a62a18bc9b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/85f34ec320d3881badfd4edc5fee5cd5012bb54d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fb9a3c1f547d0ff024dbfe7b6f327626ddf0a3de"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-53088 (GCVE-0-2026-53088)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:30 – Updated: 2026-08-05 12:33

Title

net: bcmgenet: fix off-by-one in bcmgenet_put_txcb

Summary

In the Linux kernel, the following vulnerability has been resolved: net: bcmgenet: fix off-by-one in bcmgenet_put_txcb The write_ptr points to the next open tx_cb. We want to return the tx_cb that gets rewinded, so we must rewind the pointer first then return the tx_cb that it points to. That way the txcb can be correctly cleaned up.

Severity

9.8 (Critical)


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

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/14e9f86564fff7bcf…
https://git.kernel.org/stable/c/fb9a3c1f547d0ff02…
https://git.kernel.org/stable/c/85f34ec320d3881ba…
https://git.kernel.org/stable/c/2a74590170427a3ca…
https://git.kernel.org/stable/c/29394f722f620281f…
https://git.kernel.org/stable/c/4cab761fc51c65aef…
https://git.kernel.org/stable/c/72df896e31ddd06fc…
https://git.kernel.org/stable/c/57f3f53d2c9c5a9e1…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 876dbadd53a7102e2a84afc84ea2bd3ee6dc5636 , < 14e9f86564fff7bcf7f45c1b69080e837b31d185 (git) Affected: 876dbadd53a7102e2a84afc84ea2bd3ee6dc5636 , < fb9a3c1f547d0ff024dbfe7b6f327626ddf0a3de (git) Affected: 876dbadd53a7102e2a84afc84ea2bd3ee6dc5636 , < 85f34ec320d3881badfd4edc5fee5cd5012bb54d (git) Affected: 876dbadd53a7102e2a84afc84ea2bd3ee6dc5636 , < 2a74590170427a3ca7cc4bb8690cdd559129c29c (git) Affected: 876dbadd53a7102e2a84afc84ea2bd3ee6dc5636 , < 29394f722f620281f2ee9a47f947734e53d72c90 (git) Affected: 876dbadd53a7102e2a84afc84ea2bd3ee6dc5636 , < 4cab761fc51c65aef741fcece4a18f3554edbc09 (git) Affected: 876dbadd53a7102e2a84afc84ea2bd3ee6dc5636 , < 72df896e31ddd06fcc5a789f025ad7a62a18bc9b (git) Affected: 876dbadd53a7102e2a84afc84ea2bd3ee6dc5636 , < 57f3f53d2c9c5a9e133596e2f7bc1c50688a6d38 (git) Affected: 3bdf77194ea822390b405639b77659071fd2c2e9 (git) Affected: 3.16.50 , < 3.17 (semver)
Linux	Linux	Affected: 4.13 Unaffected: 0 , < 4.13 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.141 , ≤ 6.6.* (semver) Unaffected: 6.12.91 , ≤ 6.12.* (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/broadcom/genet/bcmgenet.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "14e9f86564fff7bcf7f45c1b69080e837b31d185",
              "status": "affected",
              "version": "876dbadd53a7102e2a84afc84ea2bd3ee6dc5636",
              "versionType": "git"
            },
            {
              "lessThan": "fb9a3c1f547d0ff024dbfe7b6f327626ddf0a3de",
              "status": "affected",
              "version": "876dbadd53a7102e2a84afc84ea2bd3ee6dc5636",
              "versionType": "git"
            },
            {
              "lessThan": "85f34ec320d3881badfd4edc5fee5cd5012bb54d",
              "status": "affected",
              "version": "876dbadd53a7102e2a84afc84ea2bd3ee6dc5636",
              "versionType": "git"
            },
            {
              "lessThan": "2a74590170427a3ca7cc4bb8690cdd559129c29c",
              "status": "affected",
              "version": "876dbadd53a7102e2a84afc84ea2bd3ee6dc5636",
              "versionType": "git"
            },
            {
              "lessThan": "29394f722f620281f2ee9a47f947734e53d72c90",
              "status": "affected",
              "version": "876dbadd53a7102e2a84afc84ea2bd3ee6dc5636",
              "versionType": "git"
            },
            {
              "lessThan": "4cab761fc51c65aef741fcece4a18f3554edbc09",
              "status": "affected",
              "version": "876dbadd53a7102e2a84afc84ea2bd3ee6dc5636",
              "versionType": "git"
            },
            {
              "lessThan": "72df896e31ddd06fcc5a789f025ad7a62a18bc9b",
              "status": "affected",
              "version": "876dbadd53a7102e2a84afc84ea2bd3ee6dc5636",
              "versionType": "git"
            },
            {
              "lessThan": "57f3f53d2c9c5a9e133596e2f7bc1c50688a6d38",
              "status": "affected",
              "version": "876dbadd53a7102e2a84afc84ea2bd3ee6dc5636",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "3bdf77194ea822390b405639b77659071fd2c2e9",
              "versionType": "git"
            },
            {
              "lessThan": "3.17",
              "status": "affected",
              "version": "3.16.50",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/broadcom/genet/bcmgenet.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.13"
            },
            {
              "lessThan": "4.13",
              "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": "6.6.141",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "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": "4.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.209",
                  "versionStartIncluding": "4.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.175",
                  "versionStartIncluding": "4.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.141",
                  "versionStartIncluding": "4.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.91",
                  "versionStartIncluding": "4.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.33",
                  "versionStartIncluding": "4.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.10",
                  "versionStartIncluding": "4.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "4.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.16.50",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bcmgenet: fix off-by-one in bcmgenet_put_txcb\n\nThe write_ptr points to the next open tx_cb. We want to return the\ntx_cb that gets rewinded, so we must rewind the pointer first then\nreturn the tx_cb that it points to. That way the txcb can be correctly\ncleaned up."
        }
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            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The vulnerable path is the bcmgenet Ethernet transmit path, reachable when a network-facing embedded/router system sends replies or forwards attacker-supplied traffic through the affected interface.\nAC:L - The off-by-one cleanup is deterministic once the transmit error/reclaim path is reached, and an attacker can repeatedly drive transmit activity and resource pressure without needing to win an uncontrolled race.\nPR:N - No authentication or local account is required in the highest-impact network-facing deployment, because unauthenticated network traffic can cause packets to be transmitted through the driver.\nUI:N - Exploitation does not require a victim user to open a file, mount media, or perform any other interactive action.\nS:U - The impact remains within the kernel and the affected host\u0027s networking/DMA resources, without crossing a separate security authority such as a VM boundary.\nC:H - The wrong transmit control block can leave stale skb/DMA metadata and later operate on dangling kernel objects, making kernel memory disclosure a defensible worst-case outcome.\nI:H - The stale control-block cleanup can plausibly become double-free or use-after-free style kernel heap corruption, which is treated as high integrity impact.\nA:H - Even without full exploitation, incorrect cleanup of transmit control blocks and DMA mappings can corrupt driver state, leak resources, or crash/hang networking/kernel execution."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:33:16.590Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/14e9f86564fff7bcf7f45c1b69080e837b31d185"
        },
        {
          "url": "https://git.kernel.org/stable/c/fb9a3c1f547d0ff024dbfe7b6f327626ddf0a3de"
        },
        {
          "url": "https://git.kernel.org/stable/c/85f34ec320d3881badfd4edc5fee5cd5012bb54d"
        },
        {
          "url": "https://git.kernel.org/stable/c/2a74590170427a3ca7cc4bb8690cdd559129c29c"
        },
        {
          "url": "https://git.kernel.org/stable/c/29394f722f620281f2ee9a47f947734e53d72c90"
        },
        {
          "url": "https://git.kernel.org/stable/c/4cab761fc51c65aef741fcece4a18f3554edbc09"
        },
        {
          "url": "https://git.kernel.org/stable/c/72df896e31ddd06fcc5a789f025ad7a62a18bc9b"
        },
        {
          "url": "https://git.kernel.org/stable/c/57f3f53d2c9c5a9e133596e2f7bc1c50688a6d38"
        }
      ],
      "title": "net: bcmgenet: fix off-by-one in bcmgenet_put_txcb",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53088",
    "datePublished": "2026-06-24T16:30:27.655Z",
    "dateReserved": "2026-06-09T07:44:35.384Z",
    "dateUpdated": "2026-08-05T12:33:16.590Z",
    "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.

Detection rules are retrieved from Rulezet.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.