PT-2026-33582 · Amd · Amd Cpus

Published 2026-04-17 · Updated 2026-05-23 · CVE-2025-54505

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

Affected Products

Amd Cpus

References · 19

• https://ubuntu.com/security/CVE-2025-54505 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-54505 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-54505 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2025-54505 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-54505 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2025-54505 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-54505 · Security Note
• https://roots.ec/blog/fpdss · Note
• https://amd.com/en/resources/product-security/bulletin/AMD-SB-7053.html · Note
• https://amd.com/en/resources/product-security/bulletin/amd-sb-7053.html · Note
• https://xenbits.xen.org/xsa/advisory-488.html · Note
• https://twitter.com/GGASecDe/status/2045918314245873698 · Twitter Post
• https://t.me/CVEtracker/51953 · Telegram Post
• https://git.kernel.org/linus/e55d98e7756135f32150b9b8f75d580d0d4b2dd3 · Note
• http://xenbits.xen.org/xsa/advisory-488.html · Note