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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-21724 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/38ac76fc06bc6826a3e4b12a98efbe98432380a9 kernel.org Patch 
https://git.kernel.org/stable/c/44d9c94b7a3f29a3e07c4753603a35e9b28842a3 kernel.org Patch 
https://git.kernel.org/stable/c/b1f8453b8ff1ab79a03820ef608256c499769cb6 kernel.org Patch 
https://git.kernel.org/stable/c/d5d33f01b86af44b23eea61ee309e4ef22c0cdfe kernel.org Patch 
https://git.kernel.org/stable/c/e24c1551059268b37f6f40639883eafb281b8b9c kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-787 Out-of-bounds Write cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-21724
NVD Published Date:
02/26/2025
NVD Last Modified:
10/23/2025
Source:
kernel.org