Vulnerability · Published Dec 4, 2025 · Assigned by Linux
CVE-2025-40221media: pci: mg4b: fix uninitialized iio scan data
Unrated
In plain English
A security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 90.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
In the Linux kernel, the following vulnerability has been resolved: media: pci: mg4b: fix uninitialized iio scan data Fix potential leak of uninitialized stack data to userspace by ensuring that the `scan` structure is zeroed before use.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | linux | 6.12.57-1 | DEBIAN-CVE-2025-40221 |
| Debian:14 | linux | 6.17.6-1 | DEBIAN-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux | 6.8.0-106.106 | UBUNTU-CVE-2025-40221 |
| Ubuntu:25.10 | linux | 6.17.0-14.14 | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-aws | 6.8.0-1050.53 | UBUNTU-CVE-2025-40221 |
| Ubuntu:25.10 | linux-aws | 6.17.0-1007.7 | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-aws-6.14 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-aws-6.17 | 6.17.0-1007.7~24.04.1 | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-aws-6.5 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-aws-6.8 | 6.8.0-1050.53~22.04.1 | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-azure | 6.8.0-1051.57 | UBUNTU-CVE-2025-40221 |
| Ubuntu:25.10 | linux-azure | 6.17.0-1008.8 | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-azure-6.11 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-azure-6.14 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-azure-6.5 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-azure-6.8 | 6.8.0-1051.57~22.04.1 | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-azure-fde | 6.8.0-1058.65 | UBUNTU-CVE-2025-40221 |
| Ubuntu:25.10 | linux-azure-fde | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-azure-fde-6.14 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.8 | 6.8.0-1058.65~22.04.1 | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-azure-nvidia | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-azure-nvidia-6.14 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-gcp | 6.8.0-1052.55 | UBUNTU-CVE-2025-40221 |
| Ubuntu:25.10 | linux-gcp | 6.17.0-1007.7 | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-gcp-6.11 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-gcp-6.14 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-gcp-6.17 | 6.17.0-1008.8~24.04.1 | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-gcp-6.5 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-gcp-6.8 | 6.8.0-1052.55~22.04.1 | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-gke | 6.8.0-1048.53 | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-gkeop | 6.8.0-1035.38 | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-hwe-6.11 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-hwe-6.14 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-hwe-6.5 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-hwe-6.8 | 6.8.0-106.106~22.04.1 | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-ibm | 6.8.0-1049.49 | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-ibm-6.8 | 6.8.0-1049.49~22.04.1 | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-lowlatency | 6.8.0-106.106.1 | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-lowlatency-hwe-6.11 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.5 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.8 | 6.8.0-106.106.1~22.04.1 | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-nvidia | 6.8.0-1049.52 | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-nvidia-6.11 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-nvidia-6.17 | 6.17.0-1008.8 | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-nvidia-6.5 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-nvidia-6.8 | 6.8.0-1049.52~22.04.1 | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-nvidia-lowlatency | 6.8.0-1049.52.1 | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-nvidia-tegra | 6.8.0-1020.20 | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-oem-6.11 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-oem-6.14 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-oem-6.17 | 6.17.0-1011.11 | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-oem-6.5 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-oracle | 6.8.0-1047.48 | UBUNTU-CVE-2025-40221 |
| Ubuntu:25.10 | linux-oracle | 6.17.0-1007.7 | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-oracle-6.14 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-oracle-6.17 | 6.17.0-1007.7~24.04.1 | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-oracle-6.5 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-oracle-6.8 | 6.8.0-1047.48~22.04.1 | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-raspi | 6.8.0-1050.54 | UBUNTU-CVE-2025-40221 |
| Ubuntu:25.10 | linux-raspi | 6.17.0-1008.8 | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:25.10 | linux-realtime | 6.17.0-1006.7 | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:25.10 | linux-riscv | 6.17.0-14.14.1 | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-riscv-6.14 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-riscv-6.5 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-riscv-6.8 | 6.8.0-106.106~22.04.1 | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:22.04:LTS | linux-starfive-6.5 | no fix listed | UBUNTU-CVE-2025-40221 |
| Ubuntu:24.04:LTS | linux-xilinx | 6.8.0-1028.29 | UBUNTU-CVE-2025-40221 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 0ab13674a9bd10514486cf1670d71dbd8afec421 – before b7f82da7f86479cb6479a76ebe213ece7c77398f0ab13674a9bd10514486cf1670d71dbd8afec421 – before b792eba44494b4e6ab5006013335f9819f303b8b0ab13674a9bd10514486cf1670d71dbd8afec421 – before c0d3f6969bb4d72476cfe7ea9263831f1c283704 |
| Linux | Linux | 6.7 |