{"id":"CVE-2026-23149","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:\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 i…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 53096728b8910c6916ecc6c46a5abc5c678b58d9 < ae8831ee0fb2f5f41f39722e7b3749d65bb78d08","Linux >= 53096728b8910c6916ecc6c46a5abc5c678b58d9 < 12f15d52d38ac53f7c70ea3d4b3d76afed04e064","Linux 6.18"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T21:20:50.342571Z"},"published":"2026-02-14","updated":"2026-11-05","sourceUpdated":"2026-11-05T21:23:19.508Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-23149","references":[{"url":"https://git.kernel.org/stable/c/ae8831ee0fb2f5f41f39722e7b3749d65bb78d08"},{"url":"https://git.kernel.org/stable/c/12f15d52d38ac53f7c70ea3d4b3d76afed04e064"}],"tags":["cve.org"],"epss":0.00118,"epssPercentile":0.0171,"ingestedAt":"2026-11-05T22:38:32.077Z","slug":"CVE-2026-23149","body":"## Overview\n\nIn 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 < 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.\n\n## Affected\n\n- `Linux >= 53096728b8910c6916ecc6c46a5abc5c678b58d9 < ae8831ee0fb2f5f41f39722e7b3749d65bb78d08`\n- `Linux >= 53096728b8910c6916ecc6c46a5abc5c678b58d9 < 12f15d52d38ac53f7c70ea3d4b3d76afed04e064`\n- `Linux 6.18`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}