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CVE-2023-20584

20
FAUCET Score

CVE-2023-20584 describes a medium-severity vulnerability affecting AMD processors, where the IOMMU improperly handles specific address ranges with invalid device table entries. This flaw allows a highly-privileged attacker within a compromised hypervisor to bypass SEV-SNP RMP checks, potentially compromising guest integrity. The attack requires local access and high privileges, but has a high impact on integrity. Currently, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< genoapi_1.0.0.bCPE matchmatch criteria
cpe:2.3:o:amd:epyc_8024pn_firmware:*:*:*:*:*:*:*:*
< genoapi_1.0.0.bCPE matchmatch criteria
cpe:2.3:o:amd:epyc_8024p_firmware:*:*:*:*:*:*:*:*
< genoapi_1.0.0.bCPE matchmatch criteria
cpe:2.3:o:amd:epyc_8124pn_firmware:*:*:*:*:*:*:*:*
< genoapi_1.0.0.bCPE matchmatch criteria
cpe:2.3:o:amd:epyc_8124p_firmware:*:*:*:*:*:*:*:*
< genoapi_1.0.0.bCPE matchmatch criteria
cpe:2.3:o:amd:epyc_8224pn_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
0.8
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.19%
Probability of exploitation in next 30 days
EPSS Percentile
8.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0019 is in the 49th percentile among its peer group of 3,720 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: linux-firmware-0:20240827-124.git3cff7109.el8_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportFixed in: linux-firmware-0:20240827-114.3.git3cff7109.el8_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceFixed in: linux-firmware-0:20240827-114.3.git3cff7109.el8_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsFixed in: linux-firmware-0:20240827-114.3.git3cff7109.el8_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: linux-firmware-0:20240905-143.3.el9_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Extended Update SupportFixed in: linux-firmware-0:20240905-138.3.el9_2
View patch

Vendor Advisories (1)

redhatCVE-2023-20584Moderate

kernel: hw:amd:IOMMU improperly handles certain special address leading to a loss of guest integrity

Aug 13, 2024

References

amd.com / en/resources/product-security/bulletin/amd-sb-3003.html
Vendor Advisory