Vulnerability-Lookup

GHSA-CPRM-M4X6-J7H5

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-15 06:32

Details

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

fbdev: sm501fb: Fix buffer errors in OF binding code

The code that gets the frame buffer mode from OF has 'use after free', 'buffer overrun' and memory leaks.

info->edid_data isn't free if the probe functions fail or if pd->def_mode is set.

If both the CRT and PANEL are enabled info->edid_data is used after being freed and is freed twice.

The string returned by of_get_property(np, "mode", &len) is just written over either the static "640x480-16@60" or the module parameter string without any regard for the length (which is most likely longer).

Use kstrump() for the OF mode and free everything before freeing 'info.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-74320"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:22:32Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: sm501fb: Fix buffer errors in OF binding code\n\nThe code that gets the frame buffer mode from OF has \u0027use after free\u0027,\n\u0027buffer overrun\u0027 and memory leaks.\n\ninfo-\u003eedid_data isn\u0027t free if the probe functions fail or if\npd-\u003edef_mode is set.\n\nIf both the CRT and PANEL are enabled info-\u003eedid_data is used after\nbeing freed and is freed twice.\n\nThe string returned by of_get_property(np, \"mode\", \u0026len) is just\nwritten over either the static \"640x480-16@60\" or the module parameter\nstring without any regard for the length (which is most likely longer).\n\nUse kstrump() for the OF mode and free everything before freeing \u0027info.",
  "id": "GHSA-cprm-m4x6-j7h5",
  "modified": "2026-08-15T06:32:29Z",
  "published": "2026-08-15T06:32:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74320"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0bc3d909a49e1fd8b8c3f2160d526e672c40621d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/47008d59c60ed896085da95f8d4dd40e1677dd3a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/48cf0f4c6581ec90104cec9c5bf794a8bf347e30"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9057e3f5db39f0ef0dac2f59f2bc59bf17e36c31"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b2ff450f7f5cfc7143cab57c3ad70293ba8b822a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d374f76e1257ecc5d691a765c512ed2c29a44741"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d8421e09382cfe0bd2a044c8b0a822f64855dd4e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/de590cdf7efec8a0b6da90ae2ab5fc5df26810b9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-74320 (GCVE-0-2026-74320)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:58 – Updated: 2026-08-17 05:17

Title

fbdev: sm501fb: Fix buffer errors in OF binding code

Summary

In the Linux kernel, the following vulnerability has been resolved: fbdev: sm501fb: Fix buffer errors in OF binding code The code that gets the frame buffer mode from OF has 'use after free', 'buffer overrun' and memory leaks. info->edid_data isn't free if the probe functions fail or if pd->def_mode is set. If both the CRT and PANEL are enabled info->edid_data is used after being freed and is freed twice. The string returned by of_get_property(np, "mode", &len) is just written over either the static "640x480-16@60" or the module parameter string without any regard for the length (which is most likely longer). Use kstrump() for the OF mode and free everything before freeing 'info.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/0bc3d909a49e1fd8b…
https://git.kernel.org/stable/c/47008d59c60ed8960…
https://git.kernel.org/stable/c/d374f76e1257ecc5d…
https://git.kernel.org/stable/c/b2ff450f7f5cfc714…
https://git.kernel.org/stable/c/9057e3f5db39f0ef0…
https://git.kernel.org/stable/c/de590cdf7efec8a0b…
https://git.kernel.org/stable/c/48cf0f4c6581ec901…
https://git.kernel.org/stable/c/d8421e09382cfe0bd…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 4295f9bf74a885da390abc49a3b42a011c1bb890 , < 0bc3d909a49e1fd8b8c3f2160d526e672c40621d (git) Affected: 4295f9bf74a885da390abc49a3b42a011c1bb890 , < 47008d59c60ed896085da95f8d4dd40e1677dd3a (git) Affected: 4295f9bf74a885da390abc49a3b42a011c1bb890 , < d374f76e1257ecc5d691a765c512ed2c29a44741 (git) Affected: 4295f9bf74a885da390abc49a3b42a011c1bb890 , < b2ff450f7f5cfc7143cab57c3ad70293ba8b822a (git) Affected: 4295f9bf74a885da390abc49a3b42a011c1bb890 , < 9057e3f5db39f0ef0dac2f59f2bc59bf17e36c31 (git) Affected: 4295f9bf74a885da390abc49a3b42a011c1bb890 , < de590cdf7efec8a0b6da90ae2ab5fc5df26810b9 (git) Affected: 4295f9bf74a885da390abc49a3b42a011c1bb890 , < 48cf0f4c6581ec90104cec9c5bf794a8bf347e30 (git) Affected: 4295f9bf74a885da390abc49a3b42a011c1bb890 , < d8421e09382cfe0bd2a044c8b0a822f64855dd4e (git)
Linux	Linux	Affected: 2.6.39 Unaffected: 0 , < 2.6.39 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/sm501fb.c"
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            },
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              "version": "0",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
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        {
          "url": "https://git.kernel.org/stable/c/d8421e09382cfe0bd2a044c8b0a822f64855dd4e"
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      "title": "fbdev: sm501fb: Fix buffer errors in OF binding code",
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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.

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GHSA-CPRM-M4X6-J7H5

CVE-2026-74320 (GCVE-0-2026-74320)

Tags

Sightings

Nomenclature