Vulnerability · Published Aug 15, 2026 · Assigned by Linux
CVE-2026-74296RDMA/mlx5: Release the HW‑provided UAR index rather than the SW one
High 7.8
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 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 92.9% 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: RDMA/mlx5: Release the HW‑provided UAR index rather than the SW one Free the UAR index returned by the hardware.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 6.1.180-1 | DEBIAN-CVE-2026-74296 |
| Debian:13 | linux | 6.12.100-1 | DEBIAN-CVE-2026-74296 |
| Debian:14 | linux | 7.1.5-1 | DEBIAN-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux | 6.8.0-147.147 | UBUNTU-CVE-2026-74296 |
| Ubuntu:26.04:LTS | linux | 7.0.0-38.38 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-aws | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-aws | 6.8.0-1067.70 | UBUNTU-CVE-2026-74296 |
| Ubuntu:26.04:LTS | linux-aws | 7.0.0-1014.14 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-aws-6.14 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-aws-6.17 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-aws-6.5 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-aws-6.8 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-aws-7.0 | 7.0.0-1014.14~24.04.1 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-azure | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-azure | 6.8.0-1071.79 | UBUNTU-CVE-2026-74296 |
| Ubuntu:26.04:LTS | linux-azure | 7.0.0-1017.17 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-azure-6.11 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-azure-6.14 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-azure-6.17 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-azure-6.5 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-azure-6.8 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-azure-7.0 | 7.0.0-1017.17~24.04.1 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-azure-fde | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-azure-fde | 6.8.0-1069.76 | UBUNTU-CVE-2026-74296 |
| Ubuntu:26.04:LTS | linux-azure-fde | 7.0.0-1016.16 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-azure-fde-6.14 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-azure-fde-6.17 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.8 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-azure-fde-7.0 | 7.0.0-1016.16~24.04.1 | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-azure-nvidia | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-azure-nvidia-6.14 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-gcp | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-gcp | 6.8.0-1071.79 | UBUNTU-CVE-2026-74296 |
| Ubuntu:26.04:LTS | linux-gcp | 7.0.0-1014.14 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-gcp-6.11 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-gcp-6.14 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-gcp-6.17 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-gcp-6.5 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-gcp-6.8 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-gcp-7.0 | 7.0.0-1014.14~24.04.1 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-gke | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-gke | 6.8.0-1066.74 | UBUNTU-CVE-2026-74296 |
| Ubuntu:26.04:LTS | linux-gke | 7.0.0-1008.9 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-gkeop | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-gkeop | 6.8.0-1052.56 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-hwe-6.11 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-hwe-6.14 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-hwe-6.17 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-hwe-6.5 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-hwe-6.8 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-hwe-7.0 | 7.0.0-38.38~24.04.4 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-ibm | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-ibm | 6.8.0-1067.68 | UBUNTU-CVE-2026-74296 |
| Ubuntu:26.04:LTS | linux-ibm | 7.0.0-1015.15 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-ibm-6.8 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-intel-iotg | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-kvm | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-lowlatency | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-lowlatency | 6.8.0-147.147.1 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-lowlatency-hwe-6.11 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.5 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.8 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-nvidia | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-nvidia | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:26.04:LTS | linux-nvidia | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-nvidia-6.11 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-nvidia-6.17 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-nvidia-6.5 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-nvidia-6.8 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-nvidia-7.0 | 7.0.0-1024.25~24.04.1 | UBUNTU-CVE-2026-74296 |
| Ubuntu:26.04:LTS | linux-nvidia-bos | 7.0.0-2022.23 | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-nvidia-lowlatency | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-nvidia-tegra | 6.8.0-1036.39 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-oem-6.11 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-oem-6.14 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-oem-6.17 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-oem-6.5 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:26.04:LTS | linux-oem-7.0 | 7.0.0-1015.15 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-oracle | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-oracle | 6.8.0-1064.67 | UBUNTU-CVE-2026-74296 |
| Ubuntu:26.04:LTS | linux-oracle | 7.0.0-1013.13 | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-oracle-6.14 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-oracle-6.17 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-oracle-6.5 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-oracle-6.8 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-oracle-7.0 | 7.0.0-1013.13~24.04.1 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-raspi | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-raspi | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:26.04:LTS | linux-raspi | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:26.04:LTS | linux-realtime | 7.0.0-38.38.1 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:26.04:LTS | linux-riscv | 7.0.0-38.38.1 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-riscv-6.14 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-riscv-6.17 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-riscv-6.5 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-riscv-6.8 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-riscv-7.0 | 7.0.0-38.38.1~24.04.1 | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-starfive-6.5 | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-vmware | 6.8.0-1008.8 | UBUNTU-CVE-2026-74296 |
| Ubuntu:24.04:LTS | linux-xilinx | no fix listed | UBUNTU-CVE-2026-74296 |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp | no fix listed | UBUNTU-CVE-2026-74296 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 – before 80f1f49f53a42733e60c90e0ec545e647969214d4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 – before aabfc845838ef453f1d22d7665596f9cc48be7dd4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 – before 6f83de384ca582fa87b4c2b0d03bd1ed3bf9a2ee4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 – before d3ff718c0c7153e2641e6a09507bace14fc5c4024ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 – before ef369446f62903ea079e8a7954b5bf8bb8300fe34ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 – before 449ae7927152e46acbe5f19f97eafdae6d3a96b1 |
| Linux | Linux | 4.16 |
References
- https://git.kernel.org/stable/c/80f1f49f53a42733e60c90e0ec545e647969214d
- https://git.kernel.org/stable/c/aabfc845838ef453f1d22d7665596f9cc48be7dd
- https://git.kernel.org/stable/c/6f83de384ca582fa87b4c2b0d03bd1ed3bf9a2ee
- https://git.kernel.org/stable/c/d3ff718c0c7153e2641e6a09507bace14fc5c402
- https://git.kernel.org/stable/c/ef369446f62903ea079e8a7954b5bf8bb8300fe3
- https://git.kernel.org/stable/c/449ae7927152e46acbe5f19f97eafdae6d3a96b1