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

Vulnerability from cvelistv5 – Published: 2026-02-14 16:01 – Updated: 2026-02-14 16:01
VLAI?
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
Impacted products
Vendor Product Version
Linux Linux Affected: 53096728b8910c6916ecc6c46a5abc5c678b58d9 , < ae8831ee0fb2f5f41f39722e7b3749d65bb78d08 (git)
Affected: 53096728b8910c6916ecc6c46a5abc5c678b58d9 , < 12f15d52d38ac53f7c70ea3d4b3d76afed04e064 (git)
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    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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          "programFiles": [
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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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-14T16:01:18.281Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        {
          "url": "https://git.kernel.org/stable/c/12f15d52d38ac53f7c70ea3d4b3d76afed04e064"
        }
      ],
      "title": "drm: Do not allow userspace to trigger kernel warnings in drm_gem_change_handle_ioctl()",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23149",
    "datePublished": "2026-02-14T16:01:18.281Z",
    "dateReserved": "2026-01-13T15:37:45.975Z",
    "dateUpdated": "2026-02-14T16:01:18.281Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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  }
}


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