Linux Kernel IOMMU Test: IOMMUFD Overflow in IOMMU_TEST_OP_ADD_RESERVED
CVE-2025-71122 Published on January 14, 2026
iommufd/selftest: Check for overflow in IOMMU_TEST_OP_ADD_RESERVED
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.
Products Associated with CVE-2025-71122
Want to know whenever a new CVE is published for Linux Kernel? stack.watch will email you.
Affected Versions
Linux:- Version f4b20bb34c83dceade5470288f48f94ce3598ada and below 4cc829d61f10c20523fd4085c1546e741a792a97 is affected.
- Version f4b20bb34c83dceade5470288f48f94ce3598ada and below e6c122cffcbb2e84d321ec8ba0e38ce8e7c10925 is affected.
- Version f4b20bb34c83dceade5470288f48f94ce3598ada and below b166b8e0a381429fefd9180e67fbc834b3cee82f is affected.
- Version f4b20bb34c83dceade5470288f48f94ce3598ada and below e6a973af11135439de32ece3b9cbe3bfc043bea8 is affected.
- Version 6.2 is affected.
- Before 6.2 is unaffected.
- Version 6.6.120, <= 6.6.* is unaffected.
- Version 6.12.64, <= 6.12.* is unaffected.
- Version 6.18.3, <= 6.18.* is unaffected.
- Version 6.19, <= * is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.