CVE-2023-20585
MEDIUM 5.6 ALL-YEARSInsufficient 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.
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.1%chance of exploitation in 30 days · 1st percentile
Impact if exploited
5.6CVSS 4.0 · MEDIUM · CNA
- ConfidentialityNone
- IntegrityHigh
- AvailabilityNone
What an attacker needs
- ⚠Access: Requires local access to the host
- ⚠Privileges: Requires an admin / high-privilege account
- ✓User interaction: No user interaction needed
- ⚠Complexity: Needs a race window or specific setup
- ✓Requirements: No special attack requirements
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
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Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.
Affected
Vendors Amd
Products Amd Epyc™ 7003 Series Processors Amd Epyc™ 9004 Series Processors Amd Epyc™ Embedded 7003 Series Processors Amd Epyc™ Embedded 9004 Series Processors
Weakness (CWE)
- CWE-788: Access of Memory Location After End of Buffer
CVSS 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 and research data (JSON)
Vendor product assessments
Showing 32 of 274 vendor product statements; 242 omitted. Read the full vendor advisory.
kernel as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel
- no fix planned: Will not fix
kernel-abi-stablelists as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-abi-stablelists
- no fix planned: Will not fix
kernel-modules-extra-matched as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-modules-extra-matched
- no fix planned: Will not fix
kernel-rt-debug as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-rt-debug
- no fix planned: Will not fix
kernel-uki-virt-addons as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-uki-virt-addons
- no fix planned: Will not fix
kernel as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel
- none available: Fix deferred
kernel-modules as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-modules
- none available: Fix deferred
kernel-rt-modules-internal as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-rt-modules-internal
- none available: Fix deferred
python3-perf as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/python3-perf
- none available: Fix deferred
kernel-64k-modules as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-64k-modules
- no fix planned: Will not fix
kernel-debug-modules-internal as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-debug-modules-internal
- no fix planned: Will not fix
kernel-rt-64k as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-rt-64k
- no fix planned: Will not fix
kernel-rt-64k-modules-core as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-rt-64k-modules-core
- no fix planned: Will not fix
kernel-rt-devel as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-rt-devel
- no fix planned: Will not fix
kernel-zfcpdump as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/kernel-zfcpdump
- no fix planned: Will not fix
rv as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/rv
- no fix planned: Will not fix
kernel as a component of Red Hat Enterprise Linux 6 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel
Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00kernel-debug as a component of Red Hat Enterprise Linux 6 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-debug
Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00kernel-devel as a component of Red Hat Enterprise Linux 6 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-devel
Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00kernel-headers as a component of Red Hat Enterprise Linux 6 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-headers
Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00kernel.src as a component of Red Hat Enterprise Linux 6 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel?arch=src
Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00bpftool as a component of Red Hat Enterprise Linux 7 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/bpftool
Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00kernel-abi-whitelists as a component of Red Hat Enterprise Linux 7 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-abi-whitelists
Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00kernel-debug-devel as a component of Red Hat Enterprise Linux 7 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-debug-devel
Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00kernel-headers as a component of Red Hat Enterprise Linux 7 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-headers
Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00kernel-rt as a component of Red Hat Enterprise Linux 7 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-rt
Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00kernel-rt-debug-devel as a component of Red Hat Enterprise Linux 7 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-rt-debug-devel
Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00kernel-rt-doc as a component of Red Hat Enterprise Linux 7 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-rt-doc
Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00kernel-rt-trace-devel as a component of Red Hat Enterprise Linux 7 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-rt-trace-devel
Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00kernel-tools as a component of Red Hat Enterprise Linux 7 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-tools
Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00kernel-tools-libs-devel as a component of Red Hat Enterprise Linux 7 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/kernel-tools-libs-devel
Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00python-perf as a component of Red Hat Enterprise Linux 7 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:rpm/redhat/python-perf
Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00
All CVSS metrics
- MEDIUM 5.6 v4.0 · CNA Primary
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 - MEDIUM 5.6 v4.0 · NVD Secondary
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
References
Advisories
- https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-20585.json Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-24764 EUVD · EUVD-2023-24764
Technical & other
- https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3016.htmlCVE record · AMD · Updated 2026-04-16T19:12:06.991Z
NVD · CVE-2023-20585 · Updated 2026-06-17T05:30:22.067 - https://access.redhat.com/security/cve/CVE-2023-20585 Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00
- https://bugzilla.redhat.com/show_bug.cgi?id=2361464 Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00
- https://www.cve.org/CVERecord?id=CVE-2023-20585 Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00
- https://nvd.nist.gov/vuln/detail/CVE-2023-20585 Red Hat · CVE-2023-20585 · Updated 2026-08-19T17:46:52+00:00
Sources: NVD · CVE.org · All sources and attribution · EPSS