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CVE PROGRAM SOURCE RECORD8.2 High

CVE-2026-74355

iommu/vt-d: Fix RB-tree corruption in probe error path

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Status
Published
Published
Updated
Assigning organization
Linux

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().

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 4f1492efb495bcef34c9ee8a94af81e6cea5abf4 to < f5102e0fc3c6dc8685549891a96e4589fdb3e211affected
  • 4f1492efb495bcef34c9ee8a94af81e6cea5abf4 to < d16923a45d4d08367650fdc3451c89299ab6ac5aaffected
  • 4f1492efb495bcef34c9ee8a94af81e6cea5abf4 to < 43bd9e6d5513cb1edbafdeef146a1edc3aaced56affected

Linux Linux

Default version status: affected

  • 6.15affected
  • 0 to < 6.15unaffected
  • 6.18.40 to ≤ 6.18.*unaffected
  • 7.1.5 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References