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Vulnerability · Published Apr 16, 2026 · Assigned by AMD

CVE-2023-20585

Medium 5.6

In plain English

A medium-severity security flaw in AMD EPYC™ 7003 Series Processors from AMD. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)5.6Medium
Exploit odds (30 days)<0.1%top 99.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Insufficient checks of the RMP on host buffer access in IOMMU may allow an attacker with privileges and a compromised hypervisor to trigger an out of bounds condition without RMP checks, resulting in a potential loss of confidential guest integrity.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Ubuntu:24.04:LTSamd64-microcodeno fix listedUBUNTU-CVE-2023-20585
Ubuntu:25.10amd64-microcodeno fix listedUBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSamd64-microcodeno fix listedUBUNTU-CVE-2023-20585
Ubuntu:26.10amd64-microcodeno fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux6.8.0-147.147USN-8917-1
Ubuntu:24.04:LTSlinux6.8.0-147.147UBUNTU-CVE-2023-20585
Ubuntu:25.10linuxno fix listedUBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux7.0.0-38.38USN-8887-1
Ubuntu:26.04:LTSlinux7.0.0-38.38UBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-aws6.8.0-1067.70USN-8917-1
Ubuntu:24.04:LTSlinux-aws6.8.0-1067.70UBUNTU-CVE-2023-20585
Ubuntu:25.10linux-awsno fix listedUBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux-aws7.0.0-1014.14UBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux-aws7.0.0-1014.14USN-8887-1
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-aws-7.07.0.0-1014.14~24.04.1USN-8887-2
Ubuntu:24.04:LTSlinux-aws-7.07.0.0-1014.14~24.04.1UBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-azure6.8.0-1071.79USN-8918-1
Ubuntu:24.04:LTSlinux-azure6.8.0-1071.79UBUNTU-CVE-2023-20585
Ubuntu:25.10linux-azureno fix listedUBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux-azure7.0.0-1017.17USN-8888-1
Ubuntu:26.04:LTSlinux-azure7.0.0-1017.17UBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-azure-7.07.0.0-1017.17~24.04.1USN-8888-2
Ubuntu:24.04:LTSlinux-azure-7.07.0.0-1017.17~24.04.1UBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1069.76USN-8918-1
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1069.76UBUNTU-CVE-2023-20585
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux-azure-fde7.0.0-1016.16UBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux-azure-fde7.0.0-1016.16USN-8888-1
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-azure-fde-7.07.0.0-1016.16~24.04.1USN-8888-2
Ubuntu:24.04:LTSlinux-azure-fde-7.07.0.0-1016.16~24.04.1UBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-gcp6.8.0-1071.79USN-8917-1
Ubuntu:24.04:LTSlinux-gcp6.8.0-1071.79UBUNTU-CVE-2023-20585
Ubuntu:25.10linux-gcpno fix listedUBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux-gcp7.0.0-1014.14UBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux-gcp7.0.0-1014.14USN-8887-1
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-gcp-7.07.0.0-1014.14~24.04.1USN-8887-3
Ubuntu:24.04:LTSlinux-gcp-7.07.0.0-1014.14~24.04.1UBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-gke6.8.0-1066.74UBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-gke6.8.0-1066.74USN-8917-1
Ubuntu:26.04:LTSlinux-gke7.0.0-1008.9UBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux-gke7.0.0-1008.9USN-8887-1
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1052.56USN-8917-1
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1052.56UBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-38.38~24.04.4USN-8887-3
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-38.38~24.04.4UBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-ibm6.8.0-1067.68UBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-ibm6.8.0-1067.68USN-8917-1
Ubuntu:26.04:LTSlinux-ibm7.0.0-1015.15UBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux-ibm7.0.0-1015.15USN-8887-1
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-147.147.1USN-8917-1
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-147.147.1UBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-nvidia-7.07.0.0-1024.25~24.04.1USN-9003-1
Ubuntu:24.04:LTSlinux-nvidia-7.07.0.0-1024.25~24.04.1UBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux-nvidia-bos7.0.0-2022.23USN-9003-1
Ubuntu:26.04:LTSlinux-nvidia-bos7.0.0-2022.23UBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1015.15USN-8889-1
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1015.15UBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-oracle6.8.0-1064.67UBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-oracle6.8.0-1064.67USN-8917-1
Ubuntu:25.10linux-oracleno fix listedUBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux-oracle7.0.0-1013.13UBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux-oracle7.0.0-1013.13USN-8887-1
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-oracle-7.07.0.0-1013.13~24.04.1UBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-oracle-7.07.0.0-1013.13~24.04.1USN-8887-3
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2023-20585
Ubuntu:25.10linux-raspino fix listedUBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-20585
Ubuntu:25.10linux-realtimeno fix listedUBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux-realtime7.0.0-38.38.1USN-8887-1
Ubuntu:26.04:LTSlinux-realtime7.0.0-38.38.1UBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-20585
Ubuntu:25.10linux-riscvno fix listedUBUNTU-CVE-2023-20585
Ubuntu:26.04:LTSlinux-riscv7.0.0-38.38.1UBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-38.38.1~24.04.1UBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-20585
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-vmware6.8.0-1008.8UBUNTU-CVE-2023-20585
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2023-20585

Affected products (as reported)

VendorProductVersions
AMD AMD EPYC™ 7003 Series Processors see references
AMD AMD EPYC™ 9004 Series Processors see references
AMD AMD EPYC™ Embedded 7003 Series Processors see references
AMD AMD EPYC™ Embedded 9004 Series Processors see references

Weakness: CWE-788 · Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

References