# CVE-2022-46340: Memory corruption in xorg-x11-server > A stack corruption flaw in the X.Org X server allows local privilege escalation and remote code execution via X forwarding. - **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Any signed-in user - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 14 Dec 2022 - **Updated:** 22 Apr 2025 - **Also known as:** AZL-44697, DEBIAN-CVE-2022-46340, GHSA-hvwj-m4ph-92v4, SUSE-SU-2023:0653-1, SUSE-SU-2023:0654-1, SUSE-SU-2023:0655-1, SUSE-SU-2023:0656-1, SUSE-SU-2023:0657-1, SUSE-SU-2023:0683-1, SUSE-SU-2023:0731-1, UBUNTU-CVE-2022-46340 ## What is CVE-2022-46340? CVE-2022-46340 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 14 Dec 2022. Any signed-in user can exploit it over the network, with no action from the victim. ### Official description A vulnerability was found in X.Org. This security flaw occurs becuase the swap handler for the XTestFakeInput request of the XTest extension may corrupt the stack if GenericEvents with lengths larger than 32 bytes are sent through a the XTestFakeInput request. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions. This issue does not affect systems where client and server use the same byte order. Weakness: CWE-787 (Out-of-bounds Write) ## Which versions are affected by CVE-2022-46340? It affects 3 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `xorg-x11-server` | SUSE:Enterprise Storage 7 | All versions | 1.20.3-150200.22.5.69.1 | | `xorg-x11-server` | SUSE:Enterprise Storage 7.1 | All versions | 1.20.3-150200.22.5.69.1 | | `xorg-x11-server` | SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS | All versions | 1.20.3-150100.14.5.39.1 | | `xorg-x11-server` | SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | All versions | 1.20.3-150200.22.5.69.1 | | `xorg-x11-server` | SUSE:Linux Enterprise High Performance Computing 15 SP3-ESPOS | All versions | 1.20.3-150200.22.5.69.1 | | `xorg-x11-server` | SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | All versions | 1.20.3-150200.22.5.69.1 | | `xorg-x11-server` | SUSE:Linux Enterprise Module for Basesystem 15 SP4 | All versions | 1.20.3-150400.38.19.1 | | `xorg-x11-server` | SUSE:Linux Enterprise Module for Development Tools 15 SP4 | All versions | 1.20.3-150400.38.19.1 | | `xorg-x11-server` | SUSE:Linux Enterprise Real Time 15 SP3 | All versions | 1.20.3-150200.22.5.69.1 | | `xorg-x11-server` | SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 7.6_1.18.3-76.63.1 | | `xorg-x11-server` | SUSE:Linux Enterprise Server 12 SP4-ESPOS | All versions | 1.19.6-4.45.1 | | `xorg-x11-server` | SUSE:Linux Enterprise Server 12 SP4-LTSS | All versions | 1.19.6-4.45.1 | | `xorg-x11-server` | SUSE:Linux Enterprise Server 12 SP5 | All versions | 1.19.6-10.46.1 | | `xorg-x11-server` | SUSE:Linux Enterprise Server 15 SP1-LTSS | All versions | 1.20.3-150100.14.5.39.1 | | `xorg-x11-server` | SUSE:Linux Enterprise Server 15 SP2-LTSS | All versions | 1.20.3-150200.22.5.69.1 | | `xorg-x11-server` | SUSE:Linux Enterprise Server 15 SP3-LTSS | All versions | 1.20.3-150200.22.5.69.1 | | `xorg-x11-server` | SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 1.19.6-4.45.1 | | `xorg-x11-server` | SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 1.19.6-10.46.1 | | `xorg-x11-server` | SUSE:Linux Enterprise Server for SAP Applications 15 SP1 | All versions | 1.20.3-150100.14.5.39.1 | | `xorg-x11-server` | SUSE:Linux Enterprise Server for SAP Applications 15 SP2 | All versions | 1.20.3-150200.22.5.69.1 | | `xorg-x11-server` | SUSE:Linux Enterprise Server for SAP Applications 15 SP3 | All versions | 1.20.3-150200.22.5.69.1 | | `xorg-x11-server` | SUSE:Linux Enterprise Software Development Kit 12 SP5 | All versions | 1.19.6-10.46.1 | | `xorg-x11-server` | SUSE:Linux Enterprise Workstation Extension 15 SP4 | All versions | 1.20.3-150200.22.5.69.1 | | `xwayland` | SUSE:Linux Enterprise Workstation Extension 15 SP4 | All versions | 21.1.4-150400.3.12.1 | | `xorg-x11-server` | SUSE:Manager Proxy 4.2 | All versions | 1.20.3-150200.22.5.69.1 | | `xorg-x11-server` | SUSE:Manager Server 4.2 | All versions | 1.20.3-150200.22.5.69.1 | | `xorg-x11-server` | SUSE:OpenStack Cloud 9 | All versions | 1.19.6-4.45.1 | | `xorg-x11-server` | SUSE:OpenStack Cloud Crowbar 9 | All versions | 1.19.6-4.45.1 | | `xorg-x11-server` | openSUSE:Leap 15.4 | All versions | 1.20.3-150200.22.5.69.1 | | `xorg-x11-server` | openSUSE:Leap 15.4 | All versions | 1.20.3-150400.38.19.1 | | `xwayland` | openSUSE:Leap 15.4 | All versions | 21.1.4-150400.3.12.1 | Products: Debian Debian Linux, Fedoraproject Fedora, X.org X Server. ## How do I fix CVE-2022-46340? Apply the vendor's patch. ## Is CVE-2022-46340 being exploited? There is no known exploitation of CVE-2022-46340 in the wild and no public exploit code. ## Other vulnerabilities in Debian Debian Linux - [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild) - [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild) - [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild) - [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild) - [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2022-46340 and fix it if it is affected. What it is: CVE-2022-46340 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 14 Dec 2022. Any signed-in user can exploit it over the network, with no action from the victim. Exploitation: There is no known exploitation of CVE-2022-46340 in the wild and no public exploit code. Affected product: Debian Debian Linux. 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-2022-46340/ (Markdown: https://insights.sbomify.com/CVE-2022-46340/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2022-46340 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-46340 - OSV: https://osv.dev/vulnerability/CVE-2022-46340 --- From sbomify Insights: https://insights.sbomify.com/CVE-2022-46340/ Summaries are generated and may contain mistakes; the official description above is the record.