CVE-2026-89452 Linux Kernel - Use After Free

Linux kernel contains a use-after-free vulnerability caused by improper cleanup of IOMMU device registration failures in msm_iommu_probe(), letting attackers cause system instability or denial of service, exploit requires triggering device registration failure.

CVSS base score 8.4 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.20% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
11 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version with the fix for msm_iommu_probe() registration failure.

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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