CVE-2026-74355
- Source
- https://cve.org/CVERecord?id=CVE-2026-74355
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74355.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-74355
- Downstream
- Published
- 2026-08-15T05:58:40Z
- Modified
- 2026-08-18T03:56:46Z
- Severity
-
- 8.2 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
- Summary
- iommu/vt-d: Fix RB-tree corruption in probe error path
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
iommu/vt-d: Fix RB-tree corruption in probe error path
The info->node RB-tree member is zero-initialized via kzalloc. If a device does not support ATS, the device_rbtree_insert() call is skipped. If a subsequent probe step fails, the error path jumps to device_rbtree_remove(), which misinterprets the zeroed node as a tree root and corrupts the device RB-tree.
Fix this by explicitly initializing the RB-node as empty using RB_CLEAR_NODE() during initialization and guarding the removal with RB_EMPTY_NODE().
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74355.json" }- References
-
- https://git.kernel.org/stable/c/43bd9e6d5513cb1edbafdeef146a1edc3aaced56
- https://git.kernel.org/stable/c/d16923a45d4d08367650fdc3451c89299ab6ac5a
- https://git.kernel.org/stable/c/f5102e0fc3c6dc8685549891a96e4589fdb3e211
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74355.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-74355
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git