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CVE-2025-40293
Published: Dec 8, 2025
Modified: May 11, 2026
PUBLISHED
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 - < 07105e61882ff4a7d58db63cc5f9e90c6c60506caffected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 - < 4c8a4f1d34eced168cc0b3a3dfe7b6dcc2090f69affected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 - < de7f2c67ceb1941b05b04ac35458a03e93cc57b1affected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 - < dbf316fc90aa954dcd5440817f4b944627ed63e0affected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 - < cb30dfa75d55eced379a42fd67bd5fb7ec38555e |
Linux | Linux | affected 6.1unaffected 0 - < 6.1unaffected 6.1.159 - <= 6.1.*unaffected 6.6.117 - <= 6.6.*unaffected 6.12.58 - <= 6.12.*+2 more versions |
References
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