CVE-2023-20584

IOMMU improperly handles certain special address
ranges with invalid device table entries (DTEs), which may allow an attacker
with privileges and a compromised Hypervisor to
induce DTE faults to bypass RMP checks in SEV-SNP, potentially leading to a
loss of guest integrity.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.3 MEDIUM
LOCAL
HIGH
HIGH
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N
AMDCNA
5.3 MEDIUM
LOCAL
HIGH
HIGH
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N
CISA-ADPADP
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Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 7%
Debian logo
Debian Releases
Debian Product
Codename
amd64-microcode
bullseye/non-free
3.20240820.1~deb11u1
fixed
bullseye/non-free (security)
vulnerable
bookworm/non-free-firmware
3.20240820.1~deb12u1
fixed
bookworm/non-free-firmware (security)
vulnerable
sid/non-free-firmware
3.20240820.1
fixed
trixie/non-free-firmware
3.20240820.1
fixed