Vulnerability-Lookup

GHSA-2MGX-RHG3-XXXF

Vulnerability from github – Published: 2026-08-22 18:30 – Updated: 2026-08-22 18:30

Details

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

net: prestera: validate firmware header length

prestera_fw_hdr_parse() reads the firmware header before checking that the firmware image contains that header.

Reject images shorter than struct prestera_fw_header before decoding the magic and version fields.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-74693"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-22T16:16:43Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: prestera: validate firmware header length\n\nprestera_fw_hdr_parse() reads the firmware header before checking\nthat the firmware image contains that header.\n\nReject images shorter than struct prestera_fw_header before decoding the\nmagic and version fields.",
  "id": "GHSA-2mgx-rhg3-xxxf",
  "modified": "2026-08-22T18:30:29Z",
  "published": "2026-08-22T18:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74693"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0fbcceb9d19f2d1dcdf099aee590f2517cb718bb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/363e048a9d0a6c245cbc348c8a220170afed046a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/38a3afbf9fd8a2e8c47fa3ca47b425a8a9623240"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/470ac9cce7308e60cf2dceb448749cdd006e73de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6fad06bb793d7089ae05b9fcf46e11be2dfe4850"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7fa8a12296d8d5aa4b1c3904f0b354d81124cf29"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ae344eb540af3f457179b52bc6061416752485c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e0f382e8084117f0b11ffb070fe1079e38c0d7f9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-74693 (GCVE-0-2026-74693)

Vulnerability from cvelistv5 – Published: 2026-08-22 15:32 – Updated: 2026-08-22 15:32

Title

net: prestera: validate firmware header length

Summary

In the Linux kernel, the following vulnerability has been resolved: net: prestera: validate firmware header length prestera_fw_hdr_parse() reads the firmware header before checking that the firmware image contains that header. Reject images shorter than struct prestera_fw_header before decoding the magic and version fields.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/38a3afbf9fd8a2e8c…
https://git.kernel.org/stable/c/0fbcceb9d19f2d1dc…
https://git.kernel.org/stable/c/e0f382e8084117f0b…
https://git.kernel.org/stable/c/6fad06bb793d7089a…
https://git.kernel.org/stable/c/470ac9cce7308e60c…
https://git.kernel.org/stable/c/363e048a9d0a6c245…
https://git.kernel.org/stable/c/7fa8a12296d8d5aa4…
https://git.kernel.org/stable/c/8ae344eb540af3f45…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 4c2703dfd7fabb0824b3bc345f9fa47e33248c14 , < 38a3afbf9fd8a2e8c47fa3ca47b425a8a9623240 (git) Affected: 4c2703dfd7fabb0824b3bc345f9fa47e33248c14 , < 0fbcceb9d19f2d1dcdf099aee590f2517cb718bb (git) Affected: 4c2703dfd7fabb0824b3bc345f9fa47e33248c14 , < e0f382e8084117f0b11ffb070fe1079e38c0d7f9 (git) Affected: 4c2703dfd7fabb0824b3bc345f9fa47e33248c14 , < 6fad06bb793d7089ae05b9fcf46e11be2dfe4850 (git) Affected: 4c2703dfd7fabb0824b3bc345f9fa47e33248c14 , < 470ac9cce7308e60cf2dceb448749cdd006e73de (git) Affected: 4c2703dfd7fabb0824b3bc345f9fa47e33248c14 , < 363e048a9d0a6c245cbc348c8a220170afed046a (git) Affected: 4c2703dfd7fabb0824b3bc345f9fa47e33248c14 , < 7fa8a12296d8d5aa4b1c3904f0b354d81124cf29 (git) Affected: 4c2703dfd7fabb0824b3bc345f9fa47e33248c14 , < 8ae344eb540af3f457179b52bc6061416752485c (git)
Linux	Linux	Affected: 5.10 Unaffected: 0 , < 5.10 (semver) Unaffected: 5.10.265 , ≤ 5.10.* (semver) Unaffected: 5.15.216 , ≤ 5.15.* (semver) Unaffected: 6.1.183 , ≤ 6.1.* (semver) Unaffected: 6.6.152 , ≤ 6.6.* (semver) Unaffected: 6.12.104 , ≤ 6.12.* (semver) Unaffected: 6.18.45 , ≤ 6.18.* (semver) Unaffected: 7.1.9 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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        {
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          "programFiles": [
            "drivers/net/ethernet/marvell/prestera/prestera_pci.c"
          ],
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
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              "status": "unaffected",
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              "status": "unaffected",
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.18.45",
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              "status": "unaffected",
              "version": "7.1.9",
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            },
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              "version": "7.2",
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            }
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    "datePublished": "2026-08-22T15:32:56.491Z",
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}

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.

Action not permitted

GHSA-2MGX-RHG3-XXXF

CVE-2026-74693 (GCVE-0-2026-74693)

Tags

Sightings

Nomenclature