CVE-2026-74355
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 versions
Linux kernel versions
6.15
and later are affected. Fixed in
6.18.40,
7.1.5,
7.2-rc1
and their respective stable series.
References
3 totalFrequently asked questions
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What is CVE-2026-74355?
CVE-2026-74355 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.15 onward and has been patched in 6.18.40, 7.1.5 and 7.2-rc1. CVE-2026-74355 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-74355?
Yes. CVE-2026-74355 has been patched. Fixed versions include 6.18.40, 7.1.5 and 7.2-rc1. If you are running Linux kernel 6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-74355 actively exploited?
No. CVE-2026-74355 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.