Vulnerability-Lookup

GHSA-3J3V-V8VH-9MW9

Vulnerability from github – Published: 2026-04-27 18:32 – Updated: 2026-05-06 21:31

Details

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

firmware: thead: Fix buffer overflow and use standard endian macros

Addresses two issues in the TH1520 AON firmware protocol driver:

Fix a potential buffer overflow where the code used unsafe pointer arithmetic to access the 'mode' field through the 'resource' pointer with an offset. This was flagged by Smatch static checker as: "buffer overflow 'data' 2 <= 3"
Replace custom RPC_SET_BE and RPC_GET_BE macros with standard kernel endianness conversion macros (cpu_to_be16, etc.) for better portability and maintainability.

The functionality was re-tested with the GPU power-up sequence, confirming the GPU powers up correctly and the driver probes successfully.

[ 12.702370] powervr ffef400000.gpu: [drm] loaded firmware powervr/rogue_36.52.104.182_v1.fw [ 12.711043] powervr ffef400000.gpu: [drm] FW version v1.0 (build 6645434 OS) [ 12.719787] [drm] Initialized powervr 1.0.0 for ffef400000.gpu on minor 0

Severity

7.8 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-31690"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-27T18:16:54Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: thead: Fix buffer overflow and use standard endian macros\n\nAddresses two issues in the TH1520 AON firmware protocol driver:\n\n1. Fix a potential buffer overflow where the code used unsafe pointer\n   arithmetic to access the \u0027mode\u0027 field through the \u0027resource\u0027 pointer\n   with an offset. This was flagged by Smatch static checker as:\n   \"buffer overflow \u0027data\u0027 2 \u003c= 3\"\n\n2. Replace custom RPC_SET_BE* and RPC_GET_BE* macros with standard\n   kernel endianness conversion macros (cpu_to_be16, etc.) for better\n   portability and maintainability.\n\nThe functionality was re-tested with the GPU power-up sequence,\nconfirming the GPU powers up correctly and the driver probes\nsuccessfully.\n\n[   12.702370] powervr ffef400000.gpu: [drm] loaded firmware\npowervr/rogue_36.52.104.182_v1.fw\n[   12.711043] powervr ffef400000.gpu: [drm] FW version v1.0 (build\n6645434 OS)\n[   12.719787] [drm] Initialized powervr 1.0.0 for ffef400000.gpu on\nminor 0",
  "id": "GHSA-3j3v-v8vh-9mw9",
  "modified": "2026-05-06T21:31:30Z",
  "published": "2026-04-27T18:32:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31690"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/88c4bd90725557796c15878b7cb70066e9e6b5ab"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bd15a5deb5a7251dc1a0cf9186f0253f7eacdb97"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fbdb43f6bb2a15ed382d6eb0ef82c8b07b0d47bb"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-31690 (GCVE-0-2026-31690)

Vulnerability from cvelistv5 – Published: 2026-04-27 17:34 – Updated: 2026-05-11 22:13

Title

firmware: thead: Fix buffer overflow and use standard endian macros

Summary

In the Linux kernel, the following vulnerability has been resolved: firmware: thead: Fix buffer overflow and use standard endian macros Addresses two issues in the TH1520 AON firmware protocol driver: 1. Fix a potential buffer overflow where the code used unsafe pointer arithmetic to access the 'mode' field through the 'resource' pointer with an offset. This was flagged by Smatch static checker as: "buffer overflow 'data' 2 <= 3" 2. Replace custom RPC_SET_BE* and RPC_GET_BE* macros with standard kernel endianness conversion macros (cpu_to_be16, etc.) for better portability and maintainability. The functionality was re-tested with the GPU power-up sequence, confirming the GPU powers up correctly and the driver probes successfully. [ 12.702370] powervr ffef400000.gpu: [drm] loaded firmware powervr/rogue_36.52.104.182_v1.fw [ 12.711043] powervr ffef400000.gpu: [drm] FW version v1.0 (build 6645434 OS) [ 12.719787] [drm] Initialized powervr 1.0.0 for ffef400000.gpu on minor 0

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/fbdb43f6bb2a15ed3…
https://git.kernel.org/stable/c/bd15a5deb5a7251dc…
https://git.kernel.org/stable/c/88c4bd90725557796…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e4b3cbd840e565484d0ad8d260d27c057466ed17 , < fbdb43f6bb2a15ed382d6eb0ef82c8b07b0d47bb (git) Affected: e4b3cbd840e565484d0ad8d260d27c057466ed17 , < bd15a5deb5a7251dc1a0cf9186f0253f7eacdb97 (git) Affected: e4b3cbd840e565484d0ad8d260d27c057466ed17 , < 88c4bd90725557796c15878b7cb70066e9e6b5ab (git)
Linux	Linux	Affected: 6.15 Unaffected: 0 , < 6.15 (semver) Unaffected: 6.18.23 , ≤ 6.18.* (semver) Unaffected: 6.19.13 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/firmware/thead,th1520-aon.c",
            "include/linux/firmware/thead/thead,th1520-aon.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fbdb43f6bb2a15ed382d6eb0ef82c8b07b0d47bb",
              "status": "affected",
              "version": "e4b3cbd840e565484d0ad8d260d27c057466ed17",
              "versionType": "git"
            },
            {
              "lessThan": "bd15a5deb5a7251dc1a0cf9186f0253f7eacdb97",
              "status": "affected",
              "version": "e4b3cbd840e565484d0ad8d260d27c057466ed17",
              "versionType": "git"
            },
            {
              "lessThan": "88c4bd90725557796c15878b7cb70066e9e6b5ab",
              "status": "affected",
              "version": "e4b3cbd840e565484d0ad8d260d27c057466ed17",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/firmware/thead,th1520-aon.c",
            "include/linux/firmware/thead/thead,th1520-aon.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.23",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.23",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.13",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: thead: Fix buffer overflow and use standard endian macros\n\nAddresses two issues in the TH1520 AON firmware protocol driver:\n\n1. Fix a potential buffer overflow where the code used unsafe pointer\n   arithmetic to access the \u0027mode\u0027 field through the \u0027resource\u0027 pointer\n   with an offset. This was flagged by Smatch static checker as:\n   \"buffer overflow \u0027data\u0027 2 \u003c= 3\"\n\n2. Replace custom RPC_SET_BE* and RPC_GET_BE* macros with standard\n   kernel endianness conversion macros (cpu_to_be16, etc.) for better\n   portability and maintainability.\n\nThe functionality was re-tested with the GPU power-up sequence,\nconfirming the GPU powers up correctly and the driver probes\nsuccessfully.\n\n[   12.702370] powervr ffef400000.gpu: [drm] loaded firmware\npowervr/rogue_36.52.104.182_v1.fw\n[   12.711043] powervr ffef400000.gpu: [drm] FW version v1.0 (build\n6645434 OS)\n[   12.719787] [drm] Initialized powervr 1.0.0 for ffef400000.gpu on\nminor 0"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:13:45.476Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fbdb43f6bb2a15ed382d6eb0ef82c8b07b0d47bb"
        },
        {
          "url": "https://git.kernel.org/stable/c/bd15a5deb5a7251dc1a0cf9186f0253f7eacdb97"
        },
        {
          "url": "https://git.kernel.org/stable/c/88c4bd90725557796c15878b7cb70066e9e6b5ab"
        }
      ],
      "title": "firmware: thead: Fix buffer overflow and use standard endian macros",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31690",
    "datePublished": "2026-04-27T17:34:28.738Z",
    "dateReserved": "2026-03-09T15:48:24.131Z",
    "dateUpdated": "2026-05-11T22:13:45.476Z",
    "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.

Action not permitted

GHSA-3J3V-V8VH-9MW9

CVE-2026-31690 (GCVE-0-2026-31690)

Tags

Sightings

Nomenclature