{"id":"CVE-2026-43398","title":"drm/amdgpu: add upper bound check on user inputs in wait ioctl","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: add upper bound check on user inputs in wait ioctl\n\nHuge input values in amdgpu_userq_wait_ioctl can lead to a OOM and\ncould be exploited.\n\nSo check these i…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= a292fdecd72834b3bec380baa5db1e69e7f70679 < b1d10508da559da2e0ca9cca6505094a7df948e1","Linux >= a292fdecd72834b3bec380baa5db1e69e7f70679 < 3cd93bc695b3456f26f5ed52753d9071da26202a","Linux >= a292fdecd72834b3bec380baa5db1e69e7f70679 < 64ac7c09fc44985ec9bb6a9db740899fa40ca613","Linux 6.16"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T15:37:09.592158Z"},"published":"2026-05-08","updated":"2026-11-06","sourceUpdated":"2026-11-06T15:42:51.513Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43398","references":[{"url":"https://git.kernel.org/stable/c/b1d10508da559da2e0ca9cca6505094a7df948e1"},{"url":"https://git.kernel.org/stable/c/3cd93bc695b3456f26f5ed52753d9071da26202a"},{"url":"https://git.kernel.org/stable/c/64ac7c09fc44985ec9bb6a9db740899fa40ca613"}],"tags":["cve.org"],"epss":0.00126,"epssPercentile":0.02322,"ingestedAt":"2026-11-06T15:54:03.927Z","slug":"CVE-2026-43398","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: add upper bound check on user inputs in wait ioctl\n\nHuge input values in amdgpu_userq_wait_ioctl can lead to a OOM and\ncould be exploited.\n\nSo check these input value against AMDGPU_USERQ_MAX_HANDLES\nwhich is big enough value for genuine use cases and could\npotentially avoid OOM.\n\nv2: squash in Srini's fix\n\n(cherry picked from commit fcec012c664247531aed3e662f4280ff804d1476)\n\n## Affected\n\n- `Linux >= a292fdecd72834b3bec380baa5db1e69e7f70679 < b1d10508da559da2e0ca9cca6505094a7df948e1`\n- `Linux >= a292fdecd72834b3bec380baa5db1e69e7f70679 < 3cd93bc695b3456f26f5ed52753d9071da26202a`\n- `Linux >= a292fdecd72834b3bec380baa5db1e69e7f70679 < 64ac7c09fc44985ec9bb6a9db740899fa40ca613`\n- `Linux 6.16`\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":[]}