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01 Record

CVE-2023-31304

Improper input validation in SMU may allow an attacker with privileges and a compromised physical function (PF) to modify the PCIe® lane count and speed, potentially leading to a loss of availability.

LowPUBLISHEDCNA: AMD
CNA base score2.3 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L

02 Description

Improper input validation in SMU may allow an attacker with privileges and a compromised physical function (PF) to modify the PCIe® lane count and speed, potentially leading to a loss of availability.

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.15% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 4.1% of scored records. A rank, not a probability.
NVD base score
2.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
NVD analysis status
Deferred. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2024-08-13 16:53Z2 YR AGO
Last updated
2024-11-04 16:38Z1 YR AGO
Reserved
2023-04-27
Assigning CNA
AMD
Record state
PUBLISHED
Severity
Low (CVSS 2.3)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
Weaknesses
  • CWE-1284Improper Validation of Specified Quantity in InputBase
Data version
5.1
Document digest
e62f8b6d6bf975499f33a6565564cb75dc0533fb9d9d4965fc8d4261072b3858

05 Affected products

VendorProductVersionsPlatforms

06 References