CVE-2026-90388 Linux Kernel - Memory Allocation Handling Flaw

Linux kernel contains a memory allocation handling flaw in iommu/dma non-blocking, non-coherent allocation path, caused by improper failure detection in dma_alloc_from_pool(), letting kernel potentially mismanage IOMMU mappings, exploit requires kernel code execution.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.16% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Memory Allocation Handling Flaw
Impact
Denial Of Service, Privilege Escalation
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
17 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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