Medium severity · published May 12, 2022
CVE-2021-26368
Insufficient check of the process type in Trusted OS (TOS) may allow an attacker with privileges to enable a lesser privileged process to unmap memory owned by a higher privileged…
4.4
CVSS
0.1%
EPSS
No
On KEV
Description
Insufficient check of the process type in Trusted OS (TOS) may allow an attacker with privileges to enable a lesser privileged process to unmap memory owned by a higher privileged process resulting in a denial of service.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
R3
Ryzen 3 2200u Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 2300u Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 3100 Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 3300g Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 3300x Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 5125c Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 5400u Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 5425c Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 5425u Firmware · Amd
All versions, or not specified · source: NVD
R5
Ryzen 5 2500u Firmware · Amd
All versions, or not specified · source: NVD
R5
Ryzen 5 2600 Firmware · Amd
All versions, or not specified · source: NVD
R5
Ryzen 5 2600h Firmware · Amd
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26368
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26368
Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027
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