iommufd: Don't overflow during division for dirty tracking (Linux Linux)

CVE-2025-40293
Not available

At a glance

Source
NVD
EPSS
EPSS 0.20 % · percentile 10 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Deferred

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.

References

European references

CERT-FR advisories

Affected products

ProductVersions
Linux · Linuxaffected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 < 07105e61882ff4a7d58db63cc5f9e90c6c60506c ; affected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 < 4c8a4f1d34eced168cc0b3a3dfe7b6dcc2090f69 ; affected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 < de7f2c67ceb1941b05b04ac35458a03e93cc57b1 ; affected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 < dbf316fc90aa954dcd5440817f4b944627ed63e0 ; affected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 < cb30dfa75d55eced379a42fd67bd5fb7ec38555e
Linux · Linuxaffected 6.1 ; unaffected 0 < 6.1 ; unaffected 6.1.159 ≤ 6.1.* ; unaffected 6.6.117 ≤ 6.6.* ; unaffected 6.12.58 ≤ 6.12.* ; unaffected 6.17.8 ≤ 6.17.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD