Vulnerability-Lookup

GHSA-F36V-X2CG-PR97

Vulnerability from github – Published: 2026-02-14 18:30 – Updated: 2026-03-17 21:31

Details

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

drm: Do not allow userspace to trigger kernel warnings in drm_gem_change_handle_ioctl()

Since GEM bo handles are u32 in the uapi and the internal implementation uses idr_alloc() which uses int ranges, passing a new handle larger than INT_MAX trivially triggers a kernel warning:

idr_alloc(): ... if (WARN_ON_ONCE(start < 0)) return -EINVAL; ...

Fix it by rejecting new handles above INT_MAX and at the same time make the end limit calculation more obvious by moving into int domain.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23149"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-14T16:15:55Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: Do not allow userspace to trigger kernel warnings in drm_gem_change_handle_ioctl()\n\nSince GEM bo handles are u32 in the uapi and the internal implementation\nuses idr_alloc() which uses int ranges, passing a new handle larger than\nINT_MAX trivially triggers a kernel warning:\n\nidr_alloc():\n...\n\tif (WARN_ON_ONCE(start \u003c 0))\n\t\treturn -EINVAL;\n...\n\nFix it by rejecting new handles above INT_MAX and at the same time make\nthe end limit calculation more obvious by moving into int domain.",
  "id": "GHSA-f36v-x2cg-pr97",
  "modified": "2026-03-17T21:31:41Z",
  "published": "2026-02-14T18:30:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23149"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/12f15d52d38ac53f7c70ea3d4b3d76afed04e064"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ae8831ee0fb2f5f41f39722e7b3749d65bb78d08"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-23149 (GCVE-0-2026-23149)

Vulnerability from cvelistv5 – Published: 2026-02-14 16:01 – Updated: 2026-05-11 22:01

Title

drm: Do not allow userspace to trigger kernel warnings in drm_gem_change_handle_ioctl()

Summary

In the Linux kernel, the following vulnerability has been resolved: drm: Do not allow userspace to trigger kernel warnings in drm_gem_change_handle_ioctl() Since GEM bo handles are u32 in the uapi and the internal implementation uses idr_alloc() which uses int ranges, passing a new handle larger than INT_MAX trivially triggers a kernel warning: idr_alloc(): ... if (WARN_ON_ONCE(start < 0)) return -EINVAL; ... Fix it by rejecting new handles above INT_MAX and at the same time make the end limit calculation more obvious by moving into int domain.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/ae8831ee0fb2f5f41…
https://git.kernel.org/stable/c/12f15d52d38ac53f7…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 53096728b8910c6916ecc6c46a5abc5c678b58d9 , < ae8831ee0fb2f5f41f39722e7b3749d65bb78d08 (git) Affected: 53096728b8910c6916ecc6c46a5abc5c678b58d9 , < 12f15d52d38ac53f7c70ea3d4b3d76afed04e064 (git)
Linux	Linux	Affected: 6.18 Unaffected: 0 , < 6.18 (semver) Unaffected: 6.18.9 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: Do not allow userspace to trigger kernel warnings in drm_gem_change_handle_ioctl()\n\nSince GEM bo handles are u32 in the uapi and the internal implementation\nuses idr_alloc() which uses int ranges, passing a new handle larger than\nINT_MAX trivially triggers a kernel warning:\n\nidr_alloc():\n...\n\tif (WARN_ON_ONCE(start \u003c 0))\n\t\treturn -EINVAL;\n...\n\nFix it by rejecting new handles above INT_MAX and at the same time make\nthe end limit calculation more obvious by moving into int domain."
        }
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      "providerMetadata": {
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    "dateReserved": "2026-01-13T15:37:45.975Z",
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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