# CVE-2020-3621: Memory corruption in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking > Missing bounds checks on FIFO indices in Qualcomm Snapdragon firmware allow memory corruption and potential information leakage or code execution. - **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`) - **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:** No - **Published:** 8 Sep 2020 - **Updated:** 4 Aug 2024 - **Also known as:** GHSA-wc5h-vpgx-mqjw ## What is CVE-2020-3621? CVE-2020-3621 is a medium-severity memory corruption vulnerability in Qualcomm Apq8009 Firmware, published on 8 Sep 2020. It can only be exploited from the same machine or local network, with no action from the victim. ### Official description u'Lack of check to ensure that the TX read index & RX write index that are read from shared memory are less than the FIFO size results into memory corruption and potential information leakage' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking in APQ8009, APQ8017, APQ8053, APQ8096AU, APQ8098, Bitra, IPQ6018, IPQ8074, Kamorta, MDM9150, MDM9205, MDM9206, MDM9607, MDM9640, MDM9645, MDM9650, MDM9655, MSM8905, MSM8909, MSM8917, MSM8920, MSM8937, MSM8940, MSM8953, MSM8996, MSM8996AU, MSM8998, Nicobar, QCA8081, QCM2150, QCN7605, QCS404, QCS405, QCS605, QCS610, QM215, Rennell, SA415M, SA6155P, Saipan, SC7180, SC8180X, SDA660, SDA845, SDM429, SDM429W, SDM439, SDM450, SDM630, SDM632, SDM636, SDM660, SDM670, SDM710, SDM845, SDM850, SDX20, SDX24, SDX55, SM6150, SM7150, SM8150, SM8250, SXR1130, SXR2130 Weakness: CWE-787 (Out-of-bounds Write), CWE-20 (Improper Input Validation) ## Which versions are affected by CVE-2020-3621? It affects 63 products. Products: Qualcomm Apq8009 Firmware, Qualcomm Apq8053 Firmware, Qualcomm Apq8096au Firmware, Qualcomm Apq8098 Firmware, Qualcomm Bitra Firmware, Qualcomm Ipq8074 Firmware, Qualcomm Kamorta Firmware, Qualcomm Mdm9150 Firmware, Qualcomm Mdm9205 Firmware, Qualcomm Mdm9206 Firmware, Qualcomm Mdm9607 Firmware, Qualcomm Mdm9640 Firmware, Qualcomm Mdm9645 Firmware, Qualcomm Mdm9650 Firmware, Qualcomm Mdm9655 Firmware, Qualcomm Msm8905 Firmware, Qualcomm Msm8909 Firmware, Qualcomm Msm8917 Firmware, Qualcomm Msm8920 Firmware, Qualcomm Msm8937 Firmware and 43 more. ## How do I fix CVE-2020-3621? No fix has been published for CVE-2020-3621 yet. Limit exposure of the affected software until one is available. ## Is CVE-2020-3621 being exploited? There is no known exploitation of CVE-2020-3621 in the wild and no public exploit code. ## Other vulnerabilities in Qualcomm Apq8009 Firmware - [CVE-2021-1905](https://insights.sbomify.com/CVE-2021-1905/): Qualcomm Multiple Chipsets Use-After-Free (high 8.4, exploited in the wild) - [CVE-2020-11261](https://insights.sbomify.com/CVE-2020-11261/): Qualcomm Multiple Chipsets Improper Input Validation (high 7.8, exploited in the wild) - [CVE-2021-1906](https://insights.sbomify.com/CVE-2021-1906/): Qualcomm Multiple Chipsets Detection of Error Condition Without Action (medium 6.2, exploited in the wild) - [CVE-2022-40510](https://insights.sbomify.com/CVE-2022-40510/): Buffer copy without checking size of input in Audio. (critical 9.8) - [CVE-2022-22088](https://insights.sbomify.com/CVE-2022-22088/): Integer Overflow to Buffer Overflow in Bluetooth HOST (critical 9.8) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2020-3621 and fix it if it is affected. What it is: CVE-2020-3621 is a medium-severity memory corruption vulnerability in Qualcomm Apq8009 Firmware, published on 8 Sep 2020. 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-2020-3621 in the wild and no public exploit code. Affected product: Qualcomm Apq8009 Firmware. 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-2020-3621/ (Markdown: https://insights.sbomify.com/CVE-2020-3621/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2020-3621 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-3621 - OSV: https://osv.dev/vulnerability/CVE-2020-3621 --- From sbomify Insights: https://insights.sbomify.com/CVE-2020-3621/ Summaries are generated and may contain mistakes; the official description above is the record.