Bug 2429615 (CVE-2025-71122) - CVE-2025-71122 kernel: iommufd/selftest: Check for overflow in IOMMU_TEST_OP_ADD_RESERVED
Summary: CVE-2025-71122 kernel: iommufd/selftest: Check for overflow in IOMMU_TEST_OP_...
Keywords:
Status: NEW
Alias: CVE-2025-71122
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
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Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-01-14 16:04 UTC by OSIDB Bzimport
Modified: 2026-01-14 18:47 UTC (History)
0 users

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Description OSIDB Bzimport 2026-01-14 16:04:51 UTC 
In the Linux kernel, the following vulnerability has been resolved:

iommufd/selftest: Check for overflow in IOMMU_TEST_OP_ADD_RESERVED

syzkaller found it could overflow math in the test infrastructure and
cause a WARN_ON by corrupting the reserved interval tree. This only
effects test kernels with CONFIG_IOMMUFD_TEST.

Validate the user input length in the test ioctl.
Comment 1 Jon Moroney 2026-01-14 18:43:27 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026011416-CVE-2025-71122-1921@gregkh/T
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