What is CVE-2021-26352?

CVE-2021-26352 is a medium-severity vulnerability in Amd Athlon™ Series, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.5/10. Published 2022-05-10.

How severe is CVE-2021-26352?

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

Buffer overflow in Amd Athlon™ Series

CVE-2021-26352

Insufficient bound checks in System Management Unit (SMU) PCIe Hot Plug table may result in access/updates from/to invalid address space that could result in denial of service.

Vulnerability class: Buffer Overflow

EPSS: 0.002 (12.2th 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:N/I:N/A:H.

Affected products

Amd Athlon™ Series — versions various
Amd Ryzen_3_5300g
Amd Ryzen_3_5300ge
Amd Ryzen_3_5300ge_firmware
Amd Ryzen_3_5300g_firmware
Amd Ryzen_5_2600
Amd Ryzen_5_2600_firmware
Amd Ryzen_5_2600x
Amd Ryzen_5_2600x_firmware
Amd Ryzen_5_2700

Weakness classification (CWE)

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

References

psirt@amd.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-26352?: CVE-2021-26352 is a medium-severity vulnerability in Amd Athlon™ Series, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.5/10. Published 2022-05-10.
How severe is CVE-2021-26352?: Medium severity. CVSS v3 base score is 5.5 out of 10.