# CVE-2022-21986: .NET Denial of Service Vulnerability - **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C`) - **Exploited in the wild:** Not known - **Fix available:** Yes - **Published:** 9 Feb 2022 - **Updated:** 8 Oct 2026 - **Also known as:** BIT-dotnet-2022-21986, BIT-dotnet-sdk-2022-21986, GHSA-x459-p2rx-f8ff, RHSA-2022:0495, RHSA-2022:0496, RHSA-2022:0499, RHSA-2022:0500, RLSA-2022:0495, RLSA-2022:0496 ## What is CVE-2022-21986? CVE-2022-21986 is a high-severity vulnerability in Fedoraproject Fedora, published on 9 Feb 2022. ### Official description .NET Denial of Service Vulnerability ## Which versions are affected by CVE-2022-21986? 40 open source packages ship an affected version, including Microsoft.AspNetCore.App.Runtime.linux-arm, dotnet and dotnet-sdk. It affects 4 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `Microsoft.AspNetCore.App.Runtime.linux-arm` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.linux-arm` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.linux-arm` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.linux-arm` | NuGet | From 6.0.0 | 6.0.2 | | `dotnet` | Bitnami | From 5.0.0 | 5.0.14, 6.0.2 | | `dotnet-sdk` | Bitnami | From 5.0.0 | 5.0.14, 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.linux-arm64` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.linux-arm64` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.linux-arm64` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.linux-arm64` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.linux-musl-arm` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.linux-musl-arm` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.linux-musl-arm` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.linux-musl-arm` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.linux-musl-arm64` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.linux-musl-arm64` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.linux-musl-arm64` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.linux-musl-arm64` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.linux-musl-x64` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.linux-musl-x64` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.linux-musl-x64` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.linux-musl-x64` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.linux-x64` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.linux-x64` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.linux-x64` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.linux-x64` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.osx-arm64` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.osx-arm64` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.osx-x64` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.osx-x64` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.osx-x64` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.osx-x64` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.win-arm` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.win-arm` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.win-arm` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.win-arm` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.win-arm64` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.win-arm64` | NuGet | From 5.0.0 | 5.0.14 | | `Microsoft.AspNetCore.App.Runtime.win-arm64` | NuGet | From 6.0.0 | 6.0.2 | | `Microsoft.AspNetCore.App.Runtime.win-arm64` | NuGet | From 6.0.0 | 6.0.2 | Products: Fedoraproject Fedora, Microsoft .Net, Microsoft Visual Studio 2019, Microsoft Visual Studio 2022. ## How do I fix CVE-2022-21986? Upgrade Microsoft.AspNetCore.App.Runtime.linux-arm to a fixed version for your release line: 5.0.14 or 6.0.2. ## Is CVE-2022-21986 being exploited? There is no known exploitation of CVE-2022-21986 in the wild and no public exploit code. ## Other vulnerabilities in Fedoraproject Fedora - [CVE-2024-4577](https://insights.sbomify.com/CVE-2024-4577/): PHP-CGI OS Command Injection (critical 9.8, exploited in the wild) - [CVE-2021-39226](https://insights.sbomify.com/CVE-2021-39226/): Grafana Authentication Bypass (critical 9.8, exploited in the wild) - [CVE-2019-5544](https://insights.sbomify.com/CVE-2019-5544/): VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow (critical 9.8, exploited in the wild) - [CVE-2024-4947](https://insights.sbomify.com/CVE-2024-4947/): Google Chromium V8 Type Confusion (critical 9.6, exploited in the wild) - [CVE-2024-4671](https://insights.sbomify.com/CVE-2024-4671/): Google Chromium Visuals Use-After-Free (critical 9.6, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2022-21986 and fix it if it is affected. What it is: CVE-2022-21986 is a high-severity vulnerability in Fedoraproject Fedora, published on 9 Feb 2022. Exploitation: There is no known exploitation of CVE-2022-21986 in the wild and no public exploit code. Affected packages and fixed versions: - Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): affected from 5.0.0; fixed in 5.0.14 - Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): affected from 5.0.0; fixed in 5.0.14 - Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): affected from 6.0.0; fixed in 6.0.2 - Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): affected from 6.0.0; fixed in 6.0.2 - dotnet (Bitnami): affected from 5.0.0; fixed in 5.0.14, 6.0.2 - dotnet-sdk (Bitnami): affected from 5.0.0; fixed in 5.0.14, 6.0.2 - Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): affected from 5.0.0; fixed in 5.0.14 - Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): affected from 5.0.0; fixed in 5.0.14 - Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): affected from 6.0.0; fixed in 6.0.2 - Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): affected from 6.0.0; fixed in 6.0.2 - Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet): affected from 5.0.0; fixed in 5.0.14 - Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet): affected from 5.0.0; fixed in 5.0.14 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-2022-21986/ (Markdown: https://insights.sbomify.com/CVE-2022-21986/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2022-21986 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-21986 - OSV: https://osv.dev/vulnerability/CVE-2022-21986 --- From sbomify Insights: https://insights.sbomify.com/CVE-2022-21986/ Summaries are generated and may contain mistakes; the official description above is the record.