What is CVE-2021-26312?

CVE-2021-26312 is a medium-severity vulnerability in Amd Athlon™ Series, classified under Improper Initialization. CVSS score: 5.5/10. Published 2021-11-16.

How severe is CVE-2021-26312?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Amd Athlon™ Series

CVE-2021-26312

Failure to flush the Translation Lookaside Buffer (TLB) of the I/O memory management unit (IOMMU) may lead an IO device to write to memory it should not be able to access, resulting in a potential loss of integrity.

Vulnerability class: Dirty Pipe (CVE-2022-0847)

EPSS: 0.002 (15.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Amd Athlon™ Series — versions various
Amd Epyc_7232p
Amd Epyc_7232p_firmware
Amd Epyc_7251
Amd Epyc_7251_firmware
Amd Epyc_7252
Amd Epyc_7252_firmware
Amd Epyc_7261
Amd Epyc_7261_firmware
Amd Epyc_7262

Weakness classification (CWE)

CWE-665 — Improper Initialization
CWE-668 — Exposure of Resource to Wrong Sphere

References

psirt@amd.com (x_refsource_MISC)
psirt@amd.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-26312?: CVE-2021-26312 is a medium-severity vulnerability in Amd Athlon™ Series, classified under Improper Initialization. CVSS score: 5.5/10. Published 2021-11-16.
How severe is CVE-2021-26312?: Medium severity. CVSS v3 base score is 5.5 out of 10.