Vulnerability · Published Oct 15, 2025 · Assigned by Linux
CVE-2025-39973i40e: add validation for ring_len param
High 8.8
In plain English
A high-severity 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 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.2%top 95.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
In the Linux kernel, the following vulnerability has been resolved: i40e: add validation for ring_len param The `ring_len` parameter provided by the virtual function (VF) is assigned directly to the hardware memory context (HMC) without any validation. To address this, introduce an upper boundary check for both Tx and Rx queue lengths. The maximum number of descriptors supported by the hardware is 8k-32. Additionally, enforce alignment constraints: Tx rings must be a multiple of 8, and Rx rings must be a multiple of 32.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bpftool | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:10 | kernel-abi-stablelists | 6.12.0-124.16.1.el10_1 | ALSA-2025:22395 |
| AlmaLinux:8 | kernel-abi-stablelists | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-core | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-cross-headers | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-debug | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-debug-core | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-debug-devel | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-debug-modules | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-debug-modules-extra | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-devel | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:10 | kernel-doc | 6.12.0-124.16.1.el10_1 | ALSA-2025:22395 |
| AlmaLinux:8 | kernel-doc | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-headers | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-modules | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-modules-extra | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-rt | 4.18.0-553.85.1.rt7.426.el8_10 | ALSA-2025:21920 |
| AlmaLinux:8 | kernel-rt-core | 4.18.0-553.85.1.rt7.426.el8_10 | ALSA-2025:21920 |
| AlmaLinux:8 | kernel-rt-debug | 4.18.0-553.85.1.rt7.426.el8_10 | ALSA-2025:21920 |
| AlmaLinux:8 | kernel-rt-debug-core | 4.18.0-553.85.1.rt7.426.el8_10 | ALSA-2025:21920 |
| AlmaLinux:8 | kernel-rt-debug-devel | 4.18.0-553.85.1.rt7.426.el8_10 | ALSA-2025:21920 |
| AlmaLinux:8 | kernel-rt-debug-modules | 4.18.0-553.85.1.rt7.426.el8_10 | ALSA-2025:21920 |
| AlmaLinux:8 | kernel-rt-debug-modules-extra | 4.18.0-553.85.1.rt7.426.el8_10 | ALSA-2025:21920 |
| AlmaLinux:8 | kernel-rt-devel | 4.18.0-553.85.1.rt7.426.el8_10 | ALSA-2025:21920 |
| AlmaLinux:8 | kernel-rt-modules | 4.18.0-553.85.1.rt7.426.el8_10 | ALSA-2025:21920 |
| AlmaLinux:8 | kernel-rt-modules-extra | 4.18.0-553.85.1.rt7.426.el8_10 | ALSA-2025:21920 |
| AlmaLinux:8 | kernel-tools | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-tools-libs | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-zfcpdump | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-zfcpdump-core | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-zfcpdump-devel | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-zfcpdump-modules | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | kernel-zfcpdump-modules-extra | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | perf | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| AlmaLinux:8 | python3-perf | 4.18.0-553.85.1.el8_10 | ALSA-2025:21917 |
| Debian:12 | linux | 6.1.158-1 | DEBIAN-CVE-2025-39973 |
| Debian:12 | linux | 6.1.158-1 | DSA-6053-1 |
| Debian:13 | linux | 6.12.57-1 | DEBIAN-CVE-2025-39973 |
| Debian:14 | linux | 6.16.10-1 | DEBIAN-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux | 5.15.0-170.180 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux | 5.15.0-170.180 | USN-8033-1 |
| Ubuntu:24.04:LTS | linux | 6.8.0-106.106 | UBUNTU-CVE-2025-39973 |
| Ubuntu:25.10 | linux | 6.17.0-6.6 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1100.107 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1100.107 | USN-8033-1 |
| Ubuntu:24.04:LTS | linux-aws | 6.8.0-1050.53 | UBUNTU-CVE-2025-39973 |
| Ubuntu:25.10 | linux-aws | 6.17.0-1003.3 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-aws-6.14 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-aws-6.5 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-aws-6.8 | 6.8.0-1050.53~22.04.1 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1109.118 | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-azure | 6.8.0-1051.57 | UBUNTU-CVE-2025-39973 |
| Ubuntu:25.10 | linux-azure | 6.17.0-1006.6 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-azure-6.11 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-azure-6.14 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-azure-6.5 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-azure-6.8 | 6.8.0-1051.57~22.04.1 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1109.118.1 | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-azure-fde | 6.8.0-1058.65 | UBUNTU-CVE-2025-39973 |
| Ubuntu:25.10 | linux-azure-fde | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-azure-fde-6.14 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.8 | 6.8.0-1058.65~22.04.1 | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-azure-nvidia | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-azure-nvidia-6.14 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1100.109 | USN-8033-1 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1100.109 | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-gcp | 6.8.0-1052.55 | UBUNTU-CVE-2025-39973 |
| Ubuntu:25.10 | linux-gcp | 6.17.0-1003.3 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-gcp-6.11 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-gcp-6.14 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-gcp-6.5 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-gcp-6.8 | 6.8.0-1052.55~22.04.1 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1096.102 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1096.102 | USN-8033-1 |
| Ubuntu:24.04:LTS | linux-gke | 6.8.0-1048.53 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1083.91 | USN-8033-1 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1083.91 | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-gkeop | 6.8.0-1035.38 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-hwe-6.11 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-hwe-6.14 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-hwe-6.5 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-hwe-6.8 | 6.8.0-106.106~22.04.1 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1094.97 | USN-8033-1 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1094.97 | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-ibm | 6.8.0-1049.49 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-ibm-6.8 | 6.8.0-1049.49~22.04.1 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1095.101 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1095.101 | USN-8033-8 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1092.97 | USN-8033-5 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1092.97 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-170.180 | USN-8033-1 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-170.180 | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-lowlatency | 6.8.0-106.106.1 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-lowlatency-hwe-6.11 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.5 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.8 | 6.8.0-106.106.1~22.04.1 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1095.96 | USN-8033-6 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1095.96 | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-nvidia | 6.8.0-1049.52 | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-nvidia-6.11 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-nvidia-6.5 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-nvidia-6.8 | 6.8.0-1049.52~22.04.1 | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-nvidia-lowlatency | 6.8.0-1049.52.1 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1052.52 | USN-8034-1 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1052.52 | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-nvidia-tegra | 6.8.0-1020.20 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1041.41 | USN-8034-2 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1041.41 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-oem-6.11 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-oem-6.14 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-oem-6.5 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1097.103 | USN-8033-5 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1097.103 | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-oracle | 6.8.0-1047.48 | UBUNTU-CVE-2025-39973 |
| Ubuntu:25.10 | linux-oracle | 6.17.0-1003.3 | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-oracle-6.14 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-oracle-6.5 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-oracle-6.8 | 6.8.0-1047.48~22.04.1 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1097.100 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1097.100 | USN-8141-1 |
| Ubuntu:24.04:LTS | linux-raspi | 6.8.0-1050.54 | UBUNTU-CVE-2025-39973 |
| Ubuntu:25.10 | linux-raspi | 6.17.0-1004.4 | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:25.10 | linux-realtime | 6.17.0-1002.3 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:25.10 | linux-riscv | 6.17.0-6.6.1 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-riscv-6.14 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-riscv-6.5 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-riscv-6.8 | 6.8.0-106.106~22.04.1 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-starfive-6.5 | no fix listed | UBUNTU-CVE-2025-39973 |
| Ubuntu:24.04:LTS | linux-xilinx | 6.8.0-1028.29 | UBUNTU-CVE-2025-39973 |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp | 5.15.0-1064.68 | USN-8033-7 |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp | 5.15.0-1064.68 | UBUNTU-CVE-2025-39973 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 5c3c48ac6bf56367c4e89f6453cd2d61e50375bd – before 0543d40d6513cdf1c7882811086e59a6455dfe975c3c48ac6bf56367c4e89f6453cd2d61e50375bd – before 7d749e38dd2b7e8a80da2ca30c93e09de95bfcf95c3c48ac6bf56367c4e89f6453cd2d61e50375bd – before 45a7527cd7da4cdcf3b06b5c0cb1cae30b5a59855c3c48ac6bf56367c4e89f6453cd2d61e50375bd – before d3b0d3f8d11fa957171fbb186e53998361a88d4e5c3c48ac6bf56367c4e89f6453cd2d61e50375bd – before c0c83f4cd074b75cecef107bfc349be7d516c9c45c3c48ac6bf56367c4e89f6453cd2d61e50375bd – before 05fe81fb9db20464fa532a3835dc8300d68a2f845c3c48ac6bf56367c4e89f6453cd2d61e50375bd – before afec12adab55d10708179a64d95d650741e60fe05c3c48ac6bf56367c4e89f6453cd2d61e50375bd – before 55d225670def06b01af2e7a5e0446fbe946289e8 |
| Linux | Linux | 3.12 |
References
- https://git.kernel.org/stable/c/0543d40d6513cdf1c7882811086e59a6455dfe97
- https://git.kernel.org/stable/c/7d749e38dd2b7e8a80da2ca30c93e09de95bfcf9
- https://git.kernel.org/stable/c/45a7527cd7da4cdcf3b06b5c0cb1cae30b5a5985
- https://git.kernel.org/stable/c/d3b0d3f8d11fa957171fbb186e53998361a88d4e
- https://git.kernel.org/stable/c/c0c83f4cd074b75cecef107bfc349be7d516c9c4
- https://git.kernel.org/stable/c/05fe81fb9db20464fa532a3835dc8300d68a2f84
- https://git.kernel.org/stable/c/afec12adab55d10708179a64d95d650741e60fe0
- https://git.kernel.org/stable/c/55d225670def06b01af2e7a5e0446fbe946289e8