{"id":"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-\u003enode 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().","modified":"2026-08-16T03:48:49.658725074Z","published":"2026-08-15T05:58:40.766Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74355.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4f1492efb495bcef34c9ee8a94af81e6cea5abf4"},{"fixed":"f5102e0fc3c6dc8685549891a96e4589fdb3e211"},{"fixed":"d16923a45d4d08367650fdc3451c89299ab6ac5a"},{"fixed":"43bd9e6d5513cb1edbafdeef146a1edc3aaced56"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74355.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.15.0"},{"fixed":"6.18.40"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74355.json"}}],"schema_version":"1.9.0"}