CVE-2025-21724 (GCVE-0-2025-21724)
Vulnerability from cvelistv5
Published
2025-02-27 02:07
Modified
2026-10-15 01:03
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: iommufd/iova_bitmap: Fix shift-out-of-bounds in iova_bitmap_offset_to_index() Resolve a UBSAN shift-out-of-bounds issue in iova_bitmap_offset_to_index() where shifting the constant "1" (of type int) by bitmap->mapped.pgshift (an unsigned long value) could result in undefined behavior. The constant "1" defaults to a 32-bit "int", and when "pgshift" exceeds 31 (e.g., pgshift = 63) the shift operation overflows, as the result cannot be represented in a 32-bit type. To resolve this, the constant is updated to "1UL", promoting it to an unsigned long type to match the operand's type.
References
Impacted products
Vendor Product Version
Linux Linux Version: 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1
Version: 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1
Version: 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1
Version: 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1
Version: 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1
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