PulseLinuxLINUX UPDATE INTELLIGENCE
CVE Database›Document archive›CVE-2023-31355

CVE-2023-31355

linux-firmware: hw:amd: Improper Restriction of Write Operations in SNP Firmware

Loading…

Severity

Moderate

Red Hat Product Security

6

CVSS 3.1

Review impact separately from score.

Published · August 5, 2024

Updated · October 22, 2026

Description

A flaw was found in the AMD firmware. This vulnerability allows a malicious hypervisor to overwrite a guest's UMC seed, potentially enabling the reading of memory from a decommissioned guest via improper restriction of write operations.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 6
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer