# CVE-2025-40208: media: iris: fix module removal if firmware download failed > A local attacker with high privileges can trigger a kernel warning and potential instability by unbinding the Qualcomm Iris video codec driver after a firmware load failure. - **Severity:** Not scored - **Exploited in the wild:** Not known - **Login needed:** An administrator - **Attackable:** Local or same network only - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 12 Nov 2025 - **Updated:** 11 May 2026 - **Also known as:** BELL-CVE-2025-40208, DEBIAN-CVE-2025-40208, GHSA-x9g4-rmpr-m7cx, ROOT-OS-UBUNTU-2204-CVE-2025-40208, ROOT-OS-UBUNTU-2404-CVE-2025-40208, UBUNTU-CVE-2025-40208 ## What is CVE-2025-40208? CVE-2025-40208 is a denial of service vulnerability in Linux, published on 12 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim. ### Official description In the Linux kernel, the following vulnerability has been resolved: media: iris: fix module removal if firmware download failed Fix remove if firmware failed to load: qcom-iris aa00000.video-codec: Direct firmware load for qcom/vpu/vpu33_p4.mbn failed with error -2 qcom-iris aa00000.video-codec: firmware download failed qcom-iris aa00000.video-codec: core init failed then: $ echo aa00000.video-codec > /sys/bus/platform/drivers/qcom-iris/unbind Triggers: genpd genpd:1:aa00000.video-codec: Runtime PM usage count underflow! ------------[ cut here ]------------ video_cc_mvs0_clk already disabled WARNING: drivers/clk/clk.c:1206 at clk_core_disable+0xa4/0xac, CPU#1: sh/542 pc : clk_core_disable+0xa4/0xac lr : clk_core_disable+0xa4/0xac Call trace: clk_core_disable+0xa4/0xac (P) clk_disable+0x30/0x4c iris_disable_unprepare_clock+0x20/0x48 [qcom_iris] iris_vpu_power_off_hw+0x48/0x58 [qcom_iris] iris_vpu33_power_off_hardware+0x44/0x230 [qcom_iris] iris_vpu_power_off+0x34/0x84 [qcom_iris] iris_core_deinit+0x44/0xc8 [qcom_iris] iris_remove+0x20/0x48 [qcom_iris] platform_remove+0x20/0x30 device_remove+0x4c/0x80 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ video_cc_mvs0_clk already unprepared WARNING: drivers/clk/clk.c:1065 at clk_core_unprepare+0xf0/0x110, CPU#2: sh/542 pc : clk_core_unprepare+0xf0/0x110 lr : clk_core_unprepare+0xf0/0x110 Call trace: clk_core_unprepare+0xf0/0x110 (P) clk_unprepare+0x2c/0x44 iris_disable_unprepare_clock+0x28/0x48 [qcom_iris] iris_vpu_power_off_hw+0x48/0x58 [qcom_iris] iris_vpu33_power_off_hardware+0x44/0x230 [qcom_iris] iris_vpu_power_off+0x34/0x84 [qcom_iris] iris_core_deinit+0x44/0xc8 [qcom_iris] iris_remove+0x20/0x48 [qcom_iris] platform_remove+0x20/0x30 device_remove+0x4c/0x80 ---[ end trace 0000000000000000 ]--- genpd genpd:0:aa00000.video-codec: Runtime PM usage count underflow! ------------[ cut here ]------------ gcc_video_axi0_clk already disabled WARNING: drivers/clk/clk.c:1206 at clk_core_disable+0xa4/0xac, CPU#4: sh/542 pc : clk_core_disable+0xa4/0xac lr : clk_core_disable+0xa4/0xac Call trace: clk_core_disable+0xa4/0xac (P) clk_disable+0x30/0x4c iris_disable_unprepare_clock+0x20/0x48 [qcom_iris] iris_vpu33_power_off_controller+0x17c/0x428 [qcom_iris] iris_vpu_power_off+0x48/0x84 [qcom_iris] iris_core_deinit+0x44/0xc8 [qcom_iris] iris_remove+0x20/0x48 [qcom_iris] platform_remove+0x20/0x30 device_remove+0x4c/0x80 ------------[ cut here ]------------ gcc_video_axi0_clk already unprepared WARNING: drivers/clk/clk.c:1065 at clk_core_unprepare+0xf0/0x110, CPU#4: sh/542 pc : clk_core_unprepare+0xf0/0x110 lr : clk_core_unprepare+0xf0/0x110 Call trace: clk_core_unprepare+0xf0/0x110 (P) clk_unprepare+0x2c/0x44 iris_disable_unprepare_clock+0x28/0x48 [qcom_iris] iris_vpu33_power_off_controller+0x17c/0x428 [qcom_iris] iris_vpu_power_off+0x48/0x84 [qcom_iris] iris_core_deinit+0x44/0xc8 [qcom_iris] iris_remove+0x20/0x48 [qcom_iris] platform_remove+0x20/0x30 device_remove+0x4c/0x80 ---[ end trace 0000000000000000 ]--- Skip deinit if initialization never succeeded. ## Which versions are affected by CVE-2025-40208? ## How do I fix CVE-2025-40208? Apply the vendor's patch. ## Is CVE-2025-40208 being exploited? There is no known exploitation of CVE-2025-40208 in the wild and no public exploit code. ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2025-40208 and fix it if it is affected. What it is: CVE-2025-40208 is a denial of service vulnerability in Linux, published on 12 Nov 2025. 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-2025-40208 in the wild and no public exploit code. Affected product: 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-2025-40208/ (Markdown: https://insights.sbomify.com/CVE-2025-40208/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2025-40208 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-40208 - OSV: https://osv.dev/vulnerability/CVE-2025-40208 --- From sbomify Insights: https://insights.sbomify.com/CVE-2025-40208/ Summaries are generated and may contain mistakes; the official description above is the record.