Description

In the Linux kernel, the following vulnerability has been resolved: iommufd: Prevent ALIGN() overflow When allocating IOVA the candidate range gets aligned to the target alignment. If the range is close to ULONG_MAX then the ALIGN() can wrap resulting in a corrupted iova. Open code the ALIGN() using get_add_overflow() to prevent this. This simplifies the checks as we don't need to check for length earlier either. Consolidate the two copies of this code under a single helper. This bug would allow userspace to create a mapping that overlaps with some other mapping or a reserved range.

INFO

Published Date :

2025-09-04T15:32:42.607Z

Last Modified :

2025-09-29T05:56:02.884Z

Source :

Linux
AFFECTED PRODUCTS

The following products are affected by CVE-2025-38688 vulnerability.

Vendors Products
Linux
  • Linux Kernel
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-38688.

URL Resource
https://git.kernel.org/stable/c/79fad1917802c28de51a479318a056a6fbe3e2f2 cve-icon cve-icon
https://git.kernel.org/stable/c/b42497e3c0e74db061eafad41c0cd7243c46436b cve-icon cve-icon
https://git.kernel.org/stable/c/d19b817540c0abe84854a64ee9ee34cecc3bbeef cve-icon cve-icon
https://git.kernel.org/stable/c/e42a046bb41dcdde4f766a17d8211842007ed537 cve-icon cve-icon
https://git.kernel.org/stable/c/ebb6021560b94649bec6b8faba6fe0dca2218e81 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025090448-CVE-2025-38688-6e94@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-38688 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-38688 cve-icon
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