CVE - CVE-2025-21724

CVE-ID
CVE-2025-21724	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/38ac76fc06bc6826a3e4b12a98efbe98432380a9 URL:https://git.kernel.org/stable/c/38ac76fc06bc6826a3e4b12a98efbe98432380a9 MISC:https://git.kernel.org/stable/c/44d9c94b7a3f29a3e07c4753603a35e9b28842a3 URL:https://git.kernel.org/stable/c/44d9c94b7a3f29a3e07c4753603a35e9b28842a3 MISC:https://git.kernel.org/stable/c/b1f8453b8ff1ab79a03820ef608256c499769cb6 URL:https://git.kernel.org/stable/c/b1f8453b8ff1ab79a03820ef608256c499769cb6 MISC:https://git.kernel.org/stable/c/d5d33f01b86af44b23eea61ee309e4ef22c0cdfe URL:https://git.kernel.org/stable/c/d5d33f01b86af44b23eea61ee309e4ef22c0cdfe MISC:https://git.kernel.org/stable/c/e24c1551059268b37f6f40639883eafb281b8b9c URL:https://git.kernel.org/stable/c/e24c1551059268b37f6f40639883eafb281b8b9c
Assigning CNA
kernel.org
Date Record Created
20241229	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20241229)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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