# CVE-2021-3802: Denial of service in udisks2 > An attacker can cause a kernel panic and system crash by providing a specially crafted image file or USB device to udisks2. - **Severity:** Medium 4.2 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H`) - **Exploited in the wild:** Not known - **Login needed:** An administrator - **Attackable:** Local or same network only - **Victim action needed:** A user has to click or open something - **Fix available:** Yes - **Published:** 29 Nov 2021 - **Updated:** 3 Aug 2024 - **Also known as:** ALSA-2022:1820, AZL-78300, DEBIAN-CVE-2021-3802, DLA-2809-1, DLA-3387-1, GHSA-p3gq-xgj7-pfr7, MGASA-2021-0529, OESA-2022-1489, RHSA-2022:1820, RLSA-2022:1820, SUSE-SU-2022:1919-1, SUSE-SU-2022:3154-1, SUSE-SU-2022:3160-1, UBUNTU-CVE-2021-3802 ## What is CVE-2021-3802? CVE-2021-3802 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 29 Nov 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link. ### Official description A vulnerability found in udisks2. This flaw allows an attacker to input a specially crafted image file/USB leading to kernel panic. The highest threat from this vulnerability is to system availability. Weakness: CWE-20 (Improper Input Validation) ## Which versions are affected by CVE-2021-3802? It affects 3 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `libudisks2` | AlmaLinux:8 | All versions | 2.9.0-9.el8 | | `libudisks2-devel` | AlmaLinux:8 | All versions | 2.9.0-9.el8 | | `udisks2` | AlmaLinux:8 | All versions | 2.9.0-9.el8 | | `udisks2-iscsi` | AlmaLinux:8 | All versions | 2.9.0-9.el8 | | `udisks2-lsm` | AlmaLinux:8 | All versions | 2.9.0-9.el8 | | `udisks2-lvm2` | AlmaLinux:8 | All versions | 2.9.0-9.el8 | | `libudisks2` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-9.el8 | | `libudisks2-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-9.el8 | | `udisks2` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-9.el8 | | `udisks2-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-9.el8 | | `udisks2-debugsource` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-9.el8 | | `udisks2-iscsi` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-9.el8 | | `udisks2-iscsi-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-9.el8 | | `udisks2-lsm` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-9.el8 | | `udisks2-lsm-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-9.el8 | | `udisks2-lvm2` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-9.el8 | | `udisks2-lvm2-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-9.el8 | | `libudisks2-debuginfo` | Red Hat:enterprise_linux:8::crb | All versions | 0:2.9.0-9.el8 | | `libudisks2-devel` | Red Hat:enterprise_linux:8::crb | All versions | 0:2.9.0-9.el8 | | `udisks2-debuginfo` | Red Hat:enterprise_linux:8::crb | All versions | 0:2.9.0-9.el8 | | `udisks2-debugsource` | Red Hat:enterprise_linux:8::crb | All versions | 0:2.9.0-9.el8 | | `udisks2-iscsi-debuginfo` | Red Hat:enterprise_linux:8::crb | All versions | 0:2.9.0-9.el8 | | `udisks2-lsm-debuginfo` | Red Hat:enterprise_linux:8::crb | All versions | 0:2.9.0-9.el8 | | `udisks2-lvm2-debuginfo` | Red Hat:enterprise_linux:8::crb | All versions | 0:2.9.0-9.el8 | | `udisks2` | Rocky Linux:8 | All versions | 0:2.9.0-9.el8 | | `udisks2` | SUSE:Linux Enterprise Module for Basesystem 15 SP3 | All versions | 2.8.1-150200.3.3.1 | | `udisks2` | SUSE:Linux Enterprise Module for Basesystem 15 SP4 | All versions | 2.9.2-150400.3.3.1 | | `udisks2` | SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 2.1.3-3.8.1 | | `udisks2` | SUSE:Linux Enterprise Server 12 SP3-BCL | All versions | 2.1.3-3.8.1 | | `udisks2` | SUSE:Linux Enterprise Server 12 SP4-LTSS | All versions | 2.1.3-3.8.1 | | `udisks2` | SUSE:Linux Enterprise Server 12 SP5 | All versions | 2.1.3-3.8.1 | | `udisks2` | SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 2.1.3-3.8.1 | | `udisks2` | SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 2.1.3-3.8.1 | | `udisks2` | SUSE:Linux Enterprise Software Development Kit 12 SP5 | All versions | 2.1.3-3.8.1 | | `udisks2` | SUSE:OpenStack Cloud 9 | All versions | 2.1.3-3.8.1 | | `udisks2` | SUSE:OpenStack Cloud Crowbar 9 | All versions | 2.1.3-3.8.1 | | `udisks2` | openSUSE:Leap 15.3 | All versions | 2.8.1-150200.3.3.1 | | `udisks2` | openSUSE:Leap 15.4 | All versions | 2.9.2-150400.3.3.1 | Products: Fedoraproject Fedora, Redhat Enterprise Linux, Udisks Project Udisks. ## How do I fix CVE-2021-3802? Apply the vendor's patch. ## Is CVE-2021-3802 being exploited? There is no known exploitation of CVE-2021-3802 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-2021-3802 and fix it if it is affected. What it is: CVE-2021-3802 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 29 Nov 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link. Exploitation: There is no known exploitation of CVE-2021-3802 in the wild and no public exploit code. Affected product: Fedoraproject Fedora. 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-2021-3802/ (Markdown: https://insights.sbomify.com/CVE-2021-3802/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2021-3802 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-3802 - OSV: https://osv.dev/vulnerability/CVE-2021-3802 --- From sbomify Insights: https://insights.sbomify.com/CVE-2021-3802/ Summaries are generated and may contain mistakes; the official description above is the record.