Vulnerability-Lookup

GHSA-PW7C-6M3H-4WVR

Vulnerability from github – Published: 2026-09-03 15:32 – Updated: 2026-09-03 15:32

Details

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

drm/log: Fix infinite loop when scale is too large for display

When scale is large enough that scaled_font exceeds the display dimensions, rows or columns become 0. A columns value of 0 causes an infinite loop in drm_log_draw_kmsg_record() because the loop never decrements len.

Check for zero rows/columns in drm_log_setup_modeset() and return an error, cleaning up the already allocated buffer to avoid a leak.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-80740"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-03T13:06:13Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/log: Fix infinite loop when scale is too large for display\n\nWhen scale is large enough that scaled_font exceeds the display\ndimensions, rows or columns become 0. A columns value of 0 causes\nan infinite loop in drm_log_draw_kmsg_record() because the loop\nnever decrements len.\n\nCheck for zero rows/columns in drm_log_setup_modeset() and return\nan error, cleaning up the already allocated buffer to avoid a leak.",
  "id": "GHSA-pw7c-6m3h-4wvr",
  "modified": "2026-09-03T15:32:15Z",
  "published": "2026-09-03T15:32:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80740"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50ca4dbbaf3eb6deb74daca360b4dabc739a6fa6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a7d172b27aa3e1ad56e39949bfe4e5caa25fb20b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f4f2bba28df9b9aaa00262a462139dbbcdc38d9f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-80740 (GCVE-0-2026-80740)

Vulnerability from cvelistv5 – Published: 2026-09-03 08:26 – Updated: 2026-09-03 08:26

Title

drm/log: Fix infinite loop when scale is too large for display

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/log: Fix infinite loop when scale is too large for display When scale is large enough that scaled_font exceeds the display dimensions, rows or columns become 0. A columns value of 0 causes an infinite loop in drm_log_draw_kmsg_record() because the loop never decrements len. Check for zero rows/columns in drm_log_setup_modeset() and return an error, cleaning up the already allocated buffer to avoid a leak.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/a7d172b27aa3e1ad5…
https://git.kernel.org/stable/c/50ca4dbbaf3eb6deb…
https://git.kernel.org/stable/c/f4f2bba28df9b9aaa…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8a4b913df427b8f900bcc7849cc15a7b81628d57 , < a7d172b27aa3e1ad56e39949bfe4e5caa25fb20b (git) Affected: 8a4b913df427b8f900bcc7849cc15a7b81628d57 , < 50ca4dbbaf3eb6deb74daca360b4dabc739a6fa6 (git) Affected: 8a4b913df427b8f900bcc7849cc15a7b81628d57 , < f4f2bba28df9b9aaa00262a462139dbbcdc38d9f (git)
Linux	Linux	Affected: 6.14 Unaffected: 0 , < 6.14 (semver) Unaffected: 6.18.46 , ≤ 6.18.* (semver) Unaffected: 7.1.10 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/clients/drm_log.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a7d172b27aa3e1ad56e39949bfe4e5caa25fb20b",
              "status": "affected",
              "version": "8a4b913df427b8f900bcc7849cc15a7b81628d57",
              "versionType": "git"
            },
            {
              "lessThan": "50ca4dbbaf3eb6deb74daca360b4dabc739a6fa6",
              "status": "affected",
              "version": "8a4b913df427b8f900bcc7849cc15a7b81628d57",
              "versionType": "git"
            },
            {
              "lessThan": "f4f2bba28df9b9aaa00262a462139dbbcdc38d9f",
              "status": "affected",
              "version": "8a4b913df427b8f900bcc7849cc15a7b81628d57",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/clients/drm_log.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "lessThan": "6.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.46",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.10",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/log: Fix infinite loop when scale is too large for display\n\nWhen scale is large enough that scaled_font exceeds the display\ndimensions, rows or columns become 0. A columns value of 0 causes\nan infinite loop in drm_log_draw_kmsg_record() because the loop\nnever decrements len.\n\nCheck for zero rows/columns in drm_log_setup_modeset() and return\nan error, cleaning up the already allocated buffer to avoid a leak."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-03T08:26:24.706Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a7d172b27aa3e1ad56e39949bfe4e5caa25fb20b"
        },
        {
          "url": "https://git.kernel.org/stable/c/50ca4dbbaf3eb6deb74daca360b4dabc739a6fa6"
        },
        {
          "url": "https://git.kernel.org/stable/c/f4f2bba28df9b9aaa00262a462139dbbcdc38d9f"
        }
      ],
      "title": "drm/log: Fix infinite loop when scale is too large for display",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80740",
    "datePublished": "2026-09-03T08:26:24.706Z",
    "dateReserved": "2026-08-26T14:34:25.790Z",
    "dateUpdated": "2026-09-03T08:26:24.706Z",
    "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.

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-PW7C-6M3H-4WVR

CVE-2026-80740 (GCVE-0-2026-80740)

Tags

Sightings

Nomenclature