CVE-2026-74355
Description
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().
How to fix
- Linux Linuxf5102e0fc3c6dc8685549891a96e4589fdb3e211, d16923a45d4d08367650fdc3451c89299ab6ac5a, 43bd9e6d5513cb1edbafdeef146a1edc3aaced56 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 4f1492efb495bcef34c9ee8a94af81e6cea5abf4 ≤ v < f5102e0fc3c6dc8685549891a96e4589fdb3e211, 4f1492efb495bcef34c9ee8a94af81e6cea5abf4 ≤ v < d16923a45d4d08367650fdc3451c89299ab6ac5a, 4f1492efb495bcef34c9ee8a94af81e6cea5abf4 ≤ v < 43bd9e6d5513cb1edbafdeef146a1edc3aaced56, 6.15 | f5102e0fc3c6dc8685549891a96e4589fdb3e211, d16923a45d4d08367650fdc3451c89299ab6ac5a, 43bd9e6d5513cb1edbafdeef146a1edc3aaced56 |
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