CVE-2025-38688

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/79fad1917802c28de51a479318a056a6fbe3e2f2	Patch
https://git.kernel.org/stable/c/b42497e3c0e74db061eafad41c0cd7243c46436b	Patch
https://git.kernel.org/stable/c/d19b817540c0abe84854a64ee9ee34cecc3bbeef	Patch
https://git.kernel.org/stable/c/e42a046bb41dcdde4f766a17d8211842007ed537	Patch
https://git.kernel.org/stable/c/ebb6021560b94649bec6b8faba6fe0dca2218e81	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2025-09-04 16:15

Updated : 2025-11-24 19:47

NVD link : CVE-2025-38688

Mitre link : CVE-2025-38688

CVE.ORG link : CVE-2025-38688

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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