Medium severity · published Nov 16, 2021
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,…
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
E7
Epyc 7232p Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7251 Firmware · Amd
before naplespi-sp3_1.0.0.g · source: NVD
E7
Epyc 7252 Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7261 Firmware · Amd
before naplespi-sp3_1.0.0.g · source: NVD
E7
Epyc 7262 Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7272 Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7281 Firmware · Amd
before naplespi-sp3_1.0.0.g · source: NVD
E7
Epyc 7282 Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 72f3 Firmware · Amd
before milanpi-sp3_1.0.0.4 · source: NVD
E7
Epyc 7301 Firmware · Amd
before naplespi-sp3_1.0.0.g · source: NVD
E7
Epyc 7302 Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7302p Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26312
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26312
www.amd.com
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027
www.amd.com
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1028
More from Epyc 7232p Firmware
9.8
CVE-2023-20520
Improper access control settings in ASP Bootloader may allow an attacker to corrupt the return address causing a stack-based buffer overrun potentially leading to arbitrary code…
9.8
CVE-2021-26379
Insufficient input validation of mailbox data in the SMU may allow an attacker to coerce the SMU to corrupt SMRAM, potentially leading to a loss of integrity and privilege…
9.1
CVE-2021-46756
Insufficient validation of inputs in SVC_MAP_USER_STACK in the ASP (AMD Secure Processor) bootloader may allow an attacker with a malicious Uapp or ABL to send malformed or…
9.1
CVE-2021-46762
Insufficient input validation in the SMU may allow an attacker to corrupt SMU SRAM potentially leading to a loss of integrity or denial of service
8.8
CVE-2021-46769
Insufficient syscall input validation in the ASP Bootloader may allow a privileged attacker to execute arbitrary DMA copies, which can lead to code execution