CVE-2022-36765: edk2 Integer/Buffer Overflow (CVSS 7)

Description

EDK2 is susceptible to a vulnerability in the CreateHob() function, allowing a user to trigger a integer overflow to buffer overflow via a local network. Successful exploitation of this vulnerability may result in a compromise of confidentiality, integrity, and/or availability.

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CVSS v3.1 Score

7.0

HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:H

Weakness Type (CWE)

CWE-680 CWE-680

CWE-119 Buffer Overflow

Affected Products

Vendor	Product	Versions
tianocore	edk2	< 202311

References

Other References

https://github.com/tianocore/edk2/security/advisories/GHSA-ch4w-v7m3-g8wx https://lists.fedoraproject.org/archives/list/[email protected]/message/SJ42V7O7F4OU6R7QSQQECLB6LDHKZIMQ/ https://github.com/tianocore/edk2/security/advisories/GHSA-ch4w-v7m3-g8wx https://lists.debian.org/debian-lts-announce/2025/06/msg00007.html https://lists.fedoraproject.org/archives/list/[email protected]/message/SJ42V7O7F4OU6R7QSQQECLB6LDHKZIMQ/

Frequently Asked Questions

What is CVE-2022-36765? +

EDK2 is susceptible to a vulnerability in the CreateHob() function, allowing a user to trigger a integer overflow to buffer overflow via a local network. Successful exploitation of this vulnerability may result in a compromise of confidentiality, integrity, and/or availability. It has a CVSS v3.1 base score of 7.0 (HIGH).

How severe is CVE-2022-36765? +

CVE-2022-36765 has a CVSS v3.1 score of 7.0 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2022-36765? +

CVE-2022-36765 affects products from tianocore, specifically: edk2. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2022-36765? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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