CVE-2026-89844

USN-9066-1: Linux kernel (HWE) vulnerabilities

Linux kernel (HWE) vulnerabilities

It was discovered that some AMD processors did not properly perform Reverse Map Table (RMP) checks when the IOMMU accessed certain host buffers. A local attacker with hypervisor access could possibly use this to trigger an out-of-bounds condition and compromise the integrity of SEV-SNP guest memory. (CVE-2023-20585) It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the…

12. Nov 2026

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• Ubuntu
  USN-9066-1: Linux kernel (HWE) vulnerabilities