Vulnerability · Published Aug 22, 2026 · Assigned by Linux
CVE-2026-74693net: prestera: validate firmware header length
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 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 92.7% 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: net: prestera: validate firmware header length prestera_fw_hdr_parse() reads the firmware header before checking that the firmware image contains that header. Reject images shorter than struct prestera_fw_header before decoding the magic and version fields.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 6.1.187-1 | DEBIAN-CVE-2026-74693 |
| Debian:13 | linux | 6.12.105-1 | DEBIAN-CVE-2026-74693 |
| Debian:14 | linux | 7.1.9-1 | DEBIAN-CVE-2026-74693 |
| Debian:12 | linux-6.12 | 6.12.107-1~deb12u1 | DEBIAN-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux | 5.15.0-198.208 | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:26.04:LTS | linux | 7.0.0-42.42 | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1117.124 | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-aws | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:26.04:LTS | linux-aws | 7.0.0-1016.17 | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-aws-6.14 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-aws-6.17 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-aws-6.5 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-aws-6.8 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-aws-7.0 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1123.132 | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-azure | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:26.04:LTS | linux-azure | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-azure-6.11 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-azure-6.14 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-azure-6.17 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-azure-6.5 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-azure-6.8 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-azure-7.0 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1122.131 | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-azure-fde | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:26.04:LTS | linux-azure-fde | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-azure-fde-6.14 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-azure-fde-6.17 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.8 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-azure-fde-7.0 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-azure-nvidia | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-azure-nvidia-6.14 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1118.128 | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-gcp | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:26.04:LTS | linux-gcp | 7.0.0-1016.18 | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-gcp-6.11 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-gcp-6.14 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-gcp-6.17 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-gcp-6.5 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-gcp-6.8 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-gcp-7.0 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1113.119 | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-gke | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:26.04:LTS | linux-gke | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1100.108 | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-gkeop | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-hwe-6.11 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-hwe-6.14 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-hwe-6.17 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-hwe-6.5 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-hwe-6.8 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-hwe-7.0 | 7.0.0-42.42~24.04.1 | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1111.115 | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-ibm | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:26.04:LTS | linux-ibm | 7.0.0-1017.17 | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-ibm-6.8 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1112.118 | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1109.114 | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-195.205 | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-lowlatency | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-lowlatency-hwe-6.11 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.5 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.8 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1112.113 | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-nvidia | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:26.04:LTS | linux-nvidia | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-nvidia-6.11 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-nvidia-6.17 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-nvidia-6.5 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-nvidia-6.8 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-nvidia-7.0 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:26.04:LTS | linux-nvidia-bos | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-nvidia-lowlatency | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1070.72 | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-nvidia-tegra | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1059.59 | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-oem-6.11 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-oem-6.14 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-oem-6.17 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-oem-6.5 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:26.04:LTS | linux-oem-7.0 | 7.0.0-1017.17 | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1114.120 | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-oracle | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:26.04:LTS | linux-oracle | 7.0.0-1015.16 | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-oracle-6.14 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-oracle-6.17 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-oracle-6.5 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-oracle-6.8 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-oracle-7.0 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-raspi | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-raspi | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:26.04:LTS | linux-raspi | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:26.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:26.04:LTS | linux-riscv | 7.0.0-42.42.1 | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-riscv-6.14 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-riscv-6.17 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-riscv-6.5 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-riscv-6.8 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-riscv-7.0 | 7.0.0-42.42.1~24.04.1 | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-starfive-6.5 | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-vmware | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:24.04:LTS | linux-xilinx | no fix listed | UBUNTU-CVE-2026-74693 |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp | 5.15.0-1080.84 | UBUNTU-CVE-2026-74693 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 4c2703dfd7fabb0824b3bc345f9fa47e33248c14 – before 38a3afbf9fd8a2e8c47fa3ca47b425a8a96232404c2703dfd7fabb0824b3bc345f9fa47e33248c14 – before 0fbcceb9d19f2d1dcdf099aee590f2517cb718bb4c2703dfd7fabb0824b3bc345f9fa47e33248c14 – before e0f382e8084117f0b11ffb070fe1079e38c0d7f94c2703dfd7fabb0824b3bc345f9fa47e33248c14 – before 6fad06bb793d7089ae05b9fcf46e11be2dfe48504c2703dfd7fabb0824b3bc345f9fa47e33248c14 – before 470ac9cce7308e60cf2dceb448749cdd006e73de4c2703dfd7fabb0824b3bc345f9fa47e33248c14 – before 363e048a9d0a6c245cbc348c8a220170afed046a4c2703dfd7fabb0824b3bc345f9fa47e33248c14 – before 7fa8a12296d8d5aa4b1c3904f0b354d81124cf294c2703dfd7fabb0824b3bc345f9fa47e33248c14 – before 8ae344eb540af3f457179b52bc6061416752485c |
| Linux | Linux | 5.10 |
References
- https://git.kernel.org/stable/c/38a3afbf9fd8a2e8c47fa3ca47b425a8a9623240
- https://git.kernel.org/stable/c/0fbcceb9d19f2d1dcdf099aee590f2517cb718bb
- https://git.kernel.org/stable/c/e0f382e8084117f0b11ffb070fe1079e38c0d7f9
- https://git.kernel.org/stable/c/6fad06bb793d7089ae05b9fcf46e11be2dfe4850
- https://git.kernel.org/stable/c/470ac9cce7308e60cf2dceb448749cdd006e73de
- https://git.kernel.org/stable/c/363e048a9d0a6c245cbc348c8a220170afed046a
- https://git.kernel.org/stable/c/7fa8a12296d8d5aa4b1c3904f0b354d81124cf29
- https://git.kernel.org/stable/c/8ae344eb540af3f457179b52bc6061416752485c