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CVE-2025-40293 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: iommufd: Don't overflow during division for dirty tracking If pgshift is 63 then BITS_PER_TYPE(*bitmap->bitmap) * pgsize will overflow to 0 and this triggers divide by 0. In this case the index should just be 0, so reorganize things to divide by shift and avoid hitting any overflows.


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.

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/07105e61882ff4a7d58db63cc5f9e90c6c60506c kernel.org
https://git.kernel.org/stable/c/4c8a4f1d34eced168cc0b3a3dfe7b6dcc2090f69 kernel.org
https://git.kernel.org/stable/c/cb30dfa75d55eced379a42fd67bd5fb7ec38555e kernel.org
https://git.kernel.org/stable/c/dbf316fc90aa954dcd5440817f4b944627ed63e0 kernel.org
https://git.kernel.org/stable/c/de7f2c67ceb1941b05b04ac35458a03e93cc57b1 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-40293
NVD Published Date:
12/07/2025
NVD Last Modified:
12/07/2025
Source:
kernel.org