Vulnerability-Lookup

GHSA-P6RC-3J29-M628

Vulnerability from github – Published: 2026-07-25 12:31 – Updated: 2026-07-25 12:31

Details

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

firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies

The register-based PARTITION_INFO_GET path trusted the firmware-provided indices when copying partition descriptors into the caller buffer. Reject inconsistent counts or index progressions so the copy loop cannot write past the allocated array.

(fixed cur_idx when exactly one descriptor in the first fragment)

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{
  "affected": [],
  "aliases": [
    "CVE-2026-64520"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-25T10:17:38Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies\n\nThe register-based PARTITION_INFO_GET path trusted the firmware-provided\nindices when copying partition descriptors into the caller buffer.\nReject inconsistent counts or index progressions so the copy loop cannot\nwrite past the allocated array.\n\n(fixed cur_idx when exactly one descriptor in the first fragment)",
  "id": "GHSA-p6rc-3j29-m628",
  "modified": "2026-07-25T12:31:39Z",
  "published": "2026-07-25T12:31:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64520"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3974ea1938406f9bfa7c1f48d4e43533f447bb08"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/79d95c02ae0a95e6e80e8e92b7ca74ecee02854f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-64520 (GCVE-0-2026-64520)

Vulnerability from cvelistv5 – Published: 2026-07-25 09:14 – Updated: 2026-07-25 09:14

Title

firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies

Summary

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies The register-based PARTITION_INFO_GET path trusted the firmware-provided indices when copying partition descriptors into the caller buffer. Reject inconsistent counts or index progressions so the copy loop cannot write past the allocated array. (fixed cur_idx when exactly one descriptor in the first fragment)

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/f39bc7ebe75e2186b…
https://git.kernel.org/stable/c/79d95c02ae0a95e6e…
https://git.kernel.org/stable/c/3974ea1938406f9bf…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ba85c644ac8dc37d9b01a3332c2f142cb4d46954 , < f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95 (git) Affected: ba85c644ac8dc37d9b01a3332c2f142cb4d46954 , < 79d95c02ae0a95e6e80e8e92b7ca74ecee02854f (git) Affected: ba85c644ac8dc37d9b01a3332c2f142cb4d46954 , < 3974ea1938406f9bfa7c1f48d4e43533f447bb08 (git)
Linux	Linux	Affected: 6.12 Unaffected: 0 , < 6.12 (semver) Unaffected: 6.18.34 , ≤ 6.18.* (semver) Unaffected: 7.0.11 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/firmware/arm_ffa/driver.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95",
              "status": "affected",
              "version": "ba85c644ac8dc37d9b01a3332c2f142cb4d46954",
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            },
            {
              "lessThan": "79d95c02ae0a95e6e80e8e92b7ca74ecee02854f",
              "status": "affected",
              "version": "ba85c644ac8dc37d9b01a3332c2f142cb4d46954",
              "versionType": "git"
            },
            {
              "lessThan": "3974ea1938406f9bfa7c1f48d4e43533f447bb08",
              "status": "affected",
              "version": "ba85c644ac8dc37d9b01a3332c2f142cb4d46954",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/firmware/arm_ffa/driver.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "lessThan": "6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "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": "6.18.34",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.11",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies\n\nThe register-based PARTITION_INFO_GET path trusted the firmware-provided\nindices when copying partition descriptors into the caller buffer.\nReject inconsistent counts or index progressions so the copy loop cannot\nwrite past the allocated array.\n\n(fixed cur_idx when exactly one descriptor in the first fragment)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-25T09:14:46.005Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95"
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          "url": "https://git.kernel.org/stable/c/79d95c02ae0a95e6e80e8e92b7ca74ecee02854f"
        },
        {
          "url": "https://git.kernel.org/stable/c/3974ea1938406f9bfa7c1f48d4e43533f447bb08"
        }
      ],
      "title": "firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64520",
    "datePublished": "2026-07-25T09:14:46.005Z",
    "dateReserved": "2026-07-19T15:36:31.794Z",
    "dateUpdated": "2026-07-25T09:14:46.005Z",
    "state": "PUBLISHED"
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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.

Action not permitted

GHSA-P6RC-3J29-M628

CVE-2026-64520 (GCVE-0-2026-64520)

Tags

Sightings

Nomenclature