What is CVE-2022-30771?

CVE-2022-30771 is a high-severity vulnerability in Insyde Kernel, classified under Out-of-bounds Write. CVSS score: 8.2/10. Published 2022-11-15.

How severe is CVE-2022-30771?

High severity. CVSS v3 base score is 8.2 out of 10.

Buffer overflow in Insyde Kernel

CVE-2022-30771

Initialization function in PnpSmm could lead to SMRAM corruption when using subsequent PNP SMI functions Initialization function in PnpSmm could lead to SMRAM corruption when using subsequent PNP SMI functions. This issue was discovered by Insyde engineering during a security review. Fixed in: Kernel 5.1: Version 05.17.25 Kernel 5.2: Version 05.27.25 Kernel 5.3: Version 05.36.25 Kernel 5.4: Version 05.44.25 Kernel 5.5: Version 05.52.25 https://www.insyde.com/security-pledge/SA-2022064

Vulnerability class: Buffer Overflow

EPSS: 0.002 (9.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

Affected products

Insyde Kernel
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (Vendor Advisory)
cve@mitre.org (Vendor Advisory)

Frequently asked questions

What is CVE-2022-30771?: CVE-2022-30771 is a high-severity vulnerability in Insyde Kernel, classified under Out-of-bounds Write. CVSS score: 8.2/10. Published 2022-11-15.
How severe is CVE-2022-30771?: High severity. CVSS v3 base score is 8.2 out of 10.