Information disclosure in Amd Chipset Driver

CVE-2021-26333

An information disclosure vulnerability exists in AMD Platform Security Processor (PSP) chipset driver. The discretionary access control list (DACL) may allow low privileged users to open a handle and send requests to the driver resulting in a potential data leak from uninitialized physical pages.

Vulnerability class: Information Disclosure

EPSS: 0.005 (41.0th 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

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • psirt@amd.com (mailing-list, x_refsource_FULLDISC, Mailing List, Third Party Advisory)
  • psirt@amd.com (VDB Entry, Third Party Advisory, x_refsource_MISC)
  • psirt@amd.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-26333?
CVE-2021-26333 is a medium-severity vulnerability in Amd Chipset Driver, classified under Information Disclosure. CVSS score: 5.5/10. Published 2021-09-21.
How severe is CVE-2021-26333?
Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2021-26333 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.