# CVE-2022-36765: Integer Overflow in CreateHob > An integer overflow in EDK2's CreateHob function allows local attackers to trigger a buffer overflow, potentially compromising system confidentiality, integrity, and availability. - **Severity:** High 7.0 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Any signed-in user - **Attackable:** Local or same network only - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 9 Jan 2024 - **Updated:** 3 Nov 2025 - **Also known as:** AZL-38920, AZL-39424, AZL-39556, BELL-CVE-2022-36765, DEBIAN-CVE-2022-36765, GHSA-ch4w-v7m3-g8wx, OESA-2024-1350, SUSE-SU-2026:0120-1, SUSE-SU-2026:0121-1, SUSE-SU-2026:0212-1, SUSE-SU-2026:0213-1, SUSE-SU-2026:20246-1, UBUNTU-CVE-2022-36765 ## What is CVE-2022-36765? CVE-2022-36765 is a high-severity vulnerability in TianoCore edk2, published on 9 Jan 2024. It can only be exploited from the same machine or local network, with no action from the victim. ### Official 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. Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer), CWE-680 (Integer Overflow to Buffer Overflow) ## Which versions are affected by CVE-2022-36765? It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `ovmf` | SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 202202-150400.5.21.1 | | `ovmf` | SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | All versions | 202202-150400.5.21.1 | | `ovmf` | SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | All versions | 202208-150500.6.12.1 | | `ovmf` | SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS | All versions | 202208-150500.6.12.1 | | `ovmf` | SUSE:Linux Enterprise Micro 5.3 | All versions | 202202-150400.5.21.1 | | `ovmf` | SUSE:Linux Enterprise Micro 5.4 | All versions | 202202-150400.5.21.1 | | `ovmf` | SUSE:Linux Enterprise Micro 5.5 | All versions | 202208-150500.6.12.1 | | `ovmf` | SUSE:Linux Enterprise Server 12 SP5-LTSS | All versions | 2017+git1510945757.b2662641d5-3.49.1 | | `ovmf` | SUSE:Linux Enterprise Server 15 SP4-LTSS | All versions | 202202-150400.5.21.1 | | `ovmf` | SUSE:Linux Enterprise Server 15 SP5-LTSS | All versions | 202208-150500.6.12.1 | | `ovmf` | SUSE:Linux Enterprise Server 15 SP6-LTSS | All versions | 202308-150600.5.25.1 | | `ovmf` | SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 | All versions | 2017+git1510945757.b2662641d5-3.49.1 | | `ovmf` | SUSE:Linux Enterprise Server for SAP Applications 15 SP4 | All versions | 202202-150400.5.21.1 | | `ovmf` | SUSE:Linux Enterprise Server for SAP Applications 15 SP5 | All versions | 202208-150500.6.12.1 | | `ovmf` | SUSE:Linux Enterprise Server for SAP Applications 15 SP6 | All versions | 202308-150600.5.25.1 | | `ovmf` | SUSE:Linux Micro 6.0 | All versions | 202305-3.1 | | `ovmf` | openSUSE:Leap 15.6 | All versions | 202308-150600.5.25.1 | Products: Tianocore Edk2. ## How do I fix CVE-2022-36765? Apply the vendor's patch. ## Is CVE-2022-36765 being exploited? There is no known exploitation of CVE-2022-36765 in the wild and no public exploit code. ## Other vulnerabilities in TianoCore edk2 - [CVE-2023-45230](https://insights.sbomify.com/CVE-2023-45230/): Buffer Overflow in EDK II Network Package (high 8.3) - [CVE-2023-45234](https://insights.sbomify.com/CVE-2023-45234/): Buffer Overflow in EDK II Network Package (high 8.3) - [CVE-2023-45235](https://insights.sbomify.com/CVE-2023-45235/): Buffer Overflow in EDK II Network Package (high 8.3) - [CVE-2021-28210](https://insights.sbomify.com/CVE-2021-28210/): Denial of service in EDK II (high 7.8) - [CVE-2019-14584](https://insights.sbomify.com/CVE-2019-14584/): Null dereference in Tianocore EDK2 (high 7.8) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2022-36765 and fix it if it is affected. What it is: CVE-2022-36765 is a high-severity vulnerability in TianoCore edk2, published on 9 Jan 2024. It can only be exploited from the same machine or local network, with no action from the victim. Exploitation: There is no known exploitation of CVE-2022-36765 in the wild and no public exploit code. Affected product: TianoCore edk2. No package-level version data is available, so check the vendor advisory linked from the reference page. Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2022-36765/ (Markdown: https://insights.sbomify.com/CVE-2022-36765/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2022-36765 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-36765 - OSV: https://osv.dev/vulnerability/CVE-2022-36765 --- From sbomify Insights: https://insights.sbomify.com/CVE-2022-36765/ Summaries are generated and may contain mistakes; the official description above is the record.