CVE-2026-89913 Linux Kernel KVM arm64 - Use After Free

Linux kernel KVM arm64 vgic-v3 contains a race condition caused by dereferencing LPI pointers without stable references in vgic_v3_save_pending_tables, letting attackers cause use-after-free and memory corruption, exploit requires concurrent access to LPI structures.

CVSS base score 8.8 /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, Privilege Escalation
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
16 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for vgic-v3 LPI reference handling.

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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