SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-26401

LFENCE/JMP (mitigation V2-2) may not sufficiently mitigate CVE-2017-5715 on some AMD CPUs.

MEDIUM 5.6EPSS 0.29%

Does this matter?

Lower severity and a low EPSS score (0.29%). Track it; it rarely justifies an emergency change on its own.

Description

LFENCE/JMP (mitigation V2-2) may not sufficiently mitigate CVE-2017-5715 on some AMD CPUs.

CVSS 3.1
5.6 MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
EPSS
0.29% probability · 22th percentile
CISA KEV
Not listed
Affected
amd/athlon x4 940 firmware · amd/athlon x4 950 firmware · amd/athlon x4 970 firmware · amd/athlon x4 835 firmware · amd/athlon x4 845 firmware · amd/athlon x4 830 firmware · amd/athlon x4 840 firmware · amd/athlon x4 860k firmware · amd/athlon x4 870k firmware · amd/athlon x4 880k firmware · amd/athlon x4 750 firmware · amd/athlon x4 760k firmware · amd/ryzen threadripper pro 5995wx firmware · amd/ryzen threadripper pro 5975wx firmware · amd/ryzen threadripper pro 5965wx firmware · amd/ryzen threadripper pro 5955wx firmware · amd/ryzen threadripper pro 5945wx firmware · amd/ryzen threadripper 2990wx firmware · amd/ryzen threadripper 2970wx firmware · amd/ryzen threadripper 2950x firmware · +40 more
Source
psirt@amd.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.