CVE-2025-38688 (GCVE-0-2025-38688)
Vulnerability from cvelistv5
Published
2025-09-04 15:32
Modified
2025-09-29 05:56
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: iommufd: Prevent ALIGN() overflow When allocating IOVA the candidate range gets aligned to the target alignment. If the range is close to ULONG_MAX then the ALIGN() can wrap resulting in a corrupted iova. Open code the ALIGN() using get_add_overflow() to prevent this. This simplifies the checks as we don't need to check for length earlier either. Consolidate the two copies of this code under a single helper. This bug would allow userspace to create a mapping that overlaps with some other mapping or a reserved range.
References
Impacted products
Vendor Product Version
Linux Linux Version: 51fe6141f0f64ae0bbc096a41a07572273e8c0ef
Version: 51fe6141f0f64ae0bbc096a41a07572273e8c0ef
Version: 51fe6141f0f64ae0bbc096a41a07572273e8c0ef
Version: 51fe6141f0f64ae0bbc096a41a07572273e8c0ef
Version: 51fe6141f0f64ae0bbc096a41a07572273e8c0ef
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    "dateReserved": "2025-04-16T04:51:24.032Z",
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}


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