PT-2026-33582 · Amd · Amd Cpus

CVE-2025-54505 · Published 2026-04-17 · Updated 2026-07-23

Positive Technologies (AI Summary)

CVSS v4.0

2.0

Low

Base vector

AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions AMD CPUs (affected versions not specified)

Description A transient execution vulnerability exists within AMD CPUs that allows a local user-privileged attacker to leak data via the floating point divisor unit. This issue, known as Floating Point Divider State Sampling (FP-DSS), enables the leaking of previous SSE/AVX floating-point division operands, including those from other SMT threads, which may result in a loss of confidentiality.

Recommendations Set bit 9 in MSR 0xC0011028 to mitigate the risk.

Fix

Weakness Enumeration

CWE-1420

Related Identifiers

CVE-2025-54505

OPENSUSE-SU-2026:11242-1

USN-8488-1

USN-8488-2

USN-8507-1

USN-8567-1

USN-8569-1

USN-8574-1

USN-8574-2

USN-8575-1

USN-8575-2

USN-8576-1

USN-8576-2

USN-8595-1

USN-8596-1

USN-8597-1

Affected Products

Amd Cpus

References · 1545

• https://ubuntu.com/security/CVE-2025-71266 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31415 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46003 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-64087 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46016 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-45958 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-52969 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31605 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46216 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31474 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-53090 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-45834 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-71274 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43085 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-53016 · Vendor Advisory