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Fencer Vulns
high 7.0

CVE-2022-36765 json

Integer Overflow in CreateHob

published 2024-01-09 2 y ago modified 2026-06-17 4 mo ago also EUVD-2022-39465

cvss
7.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits
0
none known

Summary

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.

Patch / fix

  • edk2 Debian 12 2022.11-6+deb12u1
  • edk2 Debian 14, Debian 13 2023.11-5

debian advisories DEBIAN-CVE-2022-36765

  • edk2 Ubuntu 20.04 LTS 0~20191122.bd85bf54-2ubuntu3.5
  • edk2 Ubuntu 22.04 LTS 2022.02-3ubuntu0.22.04.2

ubuntu advisories UBUNTU-CVE-2022-36765

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • edk2 RHEL 8 20220126gitbb1bba3d77-13.el8_10
  • edk2-ovmf RHEL 8 20220126gitbb1bba3d77-13.el8_10
  • edk2-aarch64 RHEL 8 20220126gitbb1bba3d77-13.el8_10
  • edk2 RHEL 9 20231122-6.el9_4.2
  • edk2-ovmf RHEL 9 20231122-6.el9_4.2
  • edk2-tools RHEL 9 20231122-6.el9_4.2
  • edk2-aarch64 RHEL 9 20231122-6.el9_4.2

red hat advisories RHSA-2024:3017RHSA-2024:4749

  • ovmf SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE Micro 5.5 +2 more 202208-150500.6.12.1
  • ovmf SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Micro 5.4 +3 more 202202-150400.5.21.1
  • ovmf Linux Micro 6.0 202305-3.1
  • ovmf SLES for SAP 15 SP6, SLES 15 SP6-LTSS, openSUSE Leap 15.6 202308-150600.5.25.1
  • ovmf SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 2017+git1510945757.b2662641d5-3.49.1

suse advisories SUSE-SU-2026:0213-1SUSE-SU-2026:0212-1SUSE-SU-2026:20246-1SUSE-SU-2026:0121-1SUSE-SU-2026:0120-1

  • edk2-ovmf AlmaLinux 9 20231122-6.el9_4.2
  • edk2-tools AlmaLinux 9 20231122-6.el9_4.2
  • edk2-aarch64 AlmaLinux 9 20231122-6.el9_4.2
  • edk2-ovmf AlmaLinux 8 20220126gitbb1bba3d77-13.el8_10
  • edk2-aarch64 AlmaLinux 8 20220126gitbb1bba3d77-13.el8_10

almalinux advisories ALSA-2024:4749ALSA-2024:3017

  • edk2 Rocky Linux 8 20220126gitbb1bba3d77-13.el8_10

rocky linux advisories RLSA-2024:3017

  • edk2 Azure Linux 3.0 20240223gitedc6681206c1-1
  • hvloader CBL-Mariner 2.0 1.0.1-3
  • edk2 CBL-Mariner 2.0 20230301gitf80f052277c8-40

azure linux advisories AZL-38920AZL-39424AZL-39556

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-36765 updated cvss 7.0

EDK2: integer overflow in CreateHob() could lead to HOB OOB R/W

  • Red Hat Enterprise Linux AppStream (v. 8) edk2 20220126gitbb1bba3d77-13.el8_10, edk2-ovmf 20220126gitbb1bba3d77-13.el8_10, edk2-aarch64 20220126gitbb1bba3d77-13.el8_10
    fixed: vendor fix RHSA-2024:3017
  • Red Hat Enterprise Linux AppStream (v. 9) edk2 20231122-6.el9_4.2, edk2-ovmf 20231122-6.el9_4.2, edk2-tools 20231122-6.el9_4.2, edk2-aarch64 20231122-6.el9_4.2 Red Hat Enterprise Linux CRB (v. 9) edk2 20231122-6.el9_4.2, edk2-ovmf 20231122-6.el9_4.2, edk2-tools 20231122-6.el9_4.2, edk2-aarch64 20231122-6.el9_4.2
    fixed: vendor fix RHSA-2024:4749

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • TianoCore edk2

Classification

Weakness
  • CWE-680 Integer Overflow to Buffer Overflow
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.