{"id":"CVE-2026-74355","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-74355","summary":"iommu/vt-d: Fix RB-tree corruption in probe error path","details":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Fix RB-tree corruption in probe error path\n\nThe info->node RB-tree member is zero-initialized via kzalloc. If\na device does not support ATS, the device_rbtree_insert() call is\nskipped. If a subsequent probe step fails, the error path jumps to\ndevice_rbtree_remove(), which misinterprets the zeroed node as\na tree root and corrupts the device RB-tree.\n\nFix this by explicitly initializing the RB-node as empty using\nRB_CLEAR_NODE() during initialization and guarding the removal with\nRB_EMPTY_NODE().","published":"2026-08-15T05:58:40.766Z","modified":"2026-08-18T03:56:46.954221702Z","cvss":{"score":8.2,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.18.40"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/43bd9e6d5513cb1edbafdeef146a1edc3aaced56"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d16923a45d4d08367650fdc3451c89299ab6ac5a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f5102e0fc3c6dc8685549891a96e4589fdb3e211"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74355.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74355"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-18T03:56:46.954221702Z"}}