{"id":"CVE-2026-97983","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nvduse: return compat ioctl results directly\n\nThe compat handler handles VDUSE_IOTLB_GET_FD and VDUSE_VQ_GET_INFO, but\nthen calls the native handler","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nvduse: return compat ioctl results directly\n\nThe compat handler handles VDUSE_IOTLB_GET_FD and VDUSE_VQ_GET_INFO, but\nthen calls the native handler. Their different com…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= 455a2a1af92651764e9eb42cec0d95ac142afc28 < 135ac58097fa5fc707bf392c5cececf59e4080c0","Linux >= 455a2a1af92651764e9eb42cec0d95ac142afc28 < 48a4ee65e677559776349128e6a81a6041986c99","Linux 7dd28904c42ee3b0728c0692dd3332c2c83e8f33","Linux >= 7.1.5 < 7.2","Linux 7.2"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T11:17:26.340","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97983","references":[{"url":"https://git.kernel.org/stable/c/135ac58097fa5fc707bf392c5cececf59e4080c0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/48a4ee65e677559776349128e6a81a6041986c99","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97983.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-97983"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541170"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97983"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97983"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97983.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-09-25T11:06:38.867Z","epss":0.00155,"epssPercentile":0.04614,"cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-772"],"slug":"CVE-2026-97983","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nvduse: return compat ioctl results directly\n\nThe compat handler handles VDUSE_IOTLB_GET_FD and VDUSE_VQ_GET_INFO, but\nthen calls the native handler. Their different command sizes make native\ndispatch return -ENOIOCTLCMD.\n\nFor GET_FD, this overwrites receive_fd()'s return value after the\ndescriptor is installed, leaking one fd per call. Return handled compat\nresults directly and use native dispatch only for other commands.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-09-30 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97983.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":213307,"id":"CVE-2026-97983","ts":1790754686063,"field":"cvss","old":null,"new":"5.5"},{"seq":213306,"id":"CVE-2026-97983","ts":1790754686063,"field":"severity","old":"none","new":"medium"}]}