CVE-2026-74355iommu/vt-d: Fix RB-tree corruption in probe error path
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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().
- CVSS
- 8.2 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 4f1492efb495bcef34c9ee8a94af81e6cea5abf4 before f5102e0fc3c6dc8685549891a96e4589fdb3e211; from 4f1492efb495bcef34c9ee8a94af81e6cea5abf4 before d16923a45d4d08367650fdc3451c89299ab6ac5a; from 4f1492efb495bcef34c9ee8a94af81e6cea5abf4 before 43bd9e6d5513cb1edbafdeef146a1edc3aaced56 | CNA record |
References
- https://git.kernel.org/stable/c/f5102e0fc3c6dc8685549891a96e4589fdb3e211
- https://git.kernel.org/stable/c/d16923a45d4d08367650fdc3451c89299ab6ac5a
- https://git.kernel.org/stable/c/43bd9e6d5513cb1edbafdeef146a1edc3aaced56
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.