Vulnerability-Lookup

GHSA-H2R3-CMPF-WX37

Vulnerability from github – Published: 2026-08-10 15:33 – Updated: 2026-08-10 15:33

Details

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

drm/sysfb: Avoid possible truncation with calculating visible size

Calculating the visible size of the system framebuffer can result in truncation of the result. The calculation uses 32-bit arithmetics, which can overflow if the values for height and stride are large. Fix the issue by multiplying with mul_u32_u32().

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{
  "affected": [],
  "aliases": [
    "CVE-2026-68270"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-10T13:20:15Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/sysfb: Avoid possible truncation with calculating visible size\n\nCalculating the visible size of the system framebuffer can result in\ntruncation of the result. The calculation uses 32-bit arithmetics,\nwhich can overflow if the values for height and stride are large. Fix\nthe issue by multiplying with mul_u32_u32().",
  "id": "GHSA-h2r3-cmpf-wx37",
  "modified": "2026-08-10T15:33:44Z",
  "published": "2026-08-10T15:33:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68270"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/154795885e8f0033c918c815aece543168bee670"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9d58a811739a365cd693192f4b5344d736967a88"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b771974988ec7ce077a7246fa0fa588c246fe581"
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}

CVE-2026-68270 (GCVE-0-2026-68270)

Vulnerability from cvelistv5 – Published: 2026-08-10 12:01 – Updated: 2026-08-17 05:02

Title

drm/sysfb: Avoid possible truncation with calculating visible size

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/sysfb: Avoid possible truncation with calculating visible size Calculating the visible size of the system framebuffer can result in truncation of the result. The calculation uses 32-bit arithmetics, which can overflow if the values for height and stride are large. Fix the issue by multiplying with mul_u32_u32().

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/154795885e8f0033c…
https://git.kernel.org/stable/c/9d58a811739a365cd…
https://git.kernel.org/stable/c/b771974988ec7ce07…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 32ae90c66fb62e4f6ae859422f733dfb249f10cf , < 154795885e8f0033c918c815aece543168bee670 (git) Affected: 32ae90c66fb62e4f6ae859422f733dfb249f10cf , < 9d58a811739a365cd693192f4b5344d736967a88 (git) Affected: 32ae90c66fb62e4f6ae859422f733dfb249f10cf , < b771974988ec7ce077a7246fa0fa588c246fe581 (git)
Linux	Linux	Affected: 6.16 Unaffected: 0 , < 6.16 (semver) Unaffected: 6.18.42 , ≤ 6.18.* (semver) Unaffected: 7.1.6 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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  "containers": {
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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c"
          ],
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          "versions": [
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          "versions": [
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              "version": "6.16"
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            },
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            },
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              "status": "unaffected",
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            }
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        }
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      "descriptions": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/sysfb: Avoid possible truncation with calculating visible size\n\nCalculating the visible size of the system framebuffer can result in\ntruncation of the result. The calculation uses 32-bit arithmetics,\nwhich can overflow if the values for height and stride are large. Fix\nthe issue by multiplying with mul_u32_u32()."
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        "dateUpdated": "2026-08-17T05:02:03.584Z",
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    "datePublished": "2026-08-10T12:01:45.569Z",
    "dateReserved": "2026-07-30T09:28:09.378Z",
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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-H2R3-CMPF-WX37

CVE-2026-68270 (GCVE-0-2026-68270)

Tags

Sightings

Nomenclature