CVE-2025-38688
iommufd: Prevent ALIGN() overflow
CVE-2025-38688 is fixed in 36 products on 1 platform, first by DEBIAN-CVE-2025-38688, released September 4, 2025. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
7.8
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0018
7th percentile
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| kernel-uek · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-core · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-core · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-core · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-core · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-devel · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-devel · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-core · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-core · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-deprecated · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-deprecated · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-desktop · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-desktop · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-extra · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-extra · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-extra-netfilter · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-extra-netfilter · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-usb · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-usb · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-wireless · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-wireless · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-devel · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-devel · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-doc · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-doc · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-core · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-core · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-deprecated · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-deprecated · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-desktop · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-desktop · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-extra · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-extra · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-extra-netfilter · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-extra-netfilter · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-usb · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-usb · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-wireless · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-wireless · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-tools · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-tools · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-core · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-core · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-devel · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-devel · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-core · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-core · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-deprecated · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-deprecated · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-desktop · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-desktop · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-extra · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-extra · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-extra-netfilter · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-extra-netfilter · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-usb · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-usb · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-wireless · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-wireless · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| linux · Debian 13.5 (trixie) | 6.12.43-1 | DEBIAN-CVE-2025-38688 | Sep 4, 2025 |
| linux · Debian 14 | 6.16.3-1 | DEBIAN-CVE-2025-38688 | Sep 4, 2025 |
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