CVE-2026-90241 Linux Kernel - Use After Free

Linux kernel iommu/vt-d contains a use-after-free vulnerability caused by improper teardown of scalable-mode context entries on probe failure, letting attackers cause memory corruption, exploit requires device with dma_alias_mask.

CVSS base score 8.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.17% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
Impact
Use After Free
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/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 for iommu/vt-d scalable-mode context teardown.

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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