Vulnerability · Published Apr 24, 2026 · Assigned by Linux
CVE-2026-31621bnge: return after auxiliary_device_uninit() in error path
Medium 5.5
In plain English
A medium-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 0.1% (higher than 2% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
In the Linux kernel, the following vulnerability has been resolved: bnge: return after auxiliary_device_uninit() in error path When auxiliary_device_add() fails, the error block calls auxiliary_device_uninit() but does not return. The uninit drops the last reference and synchronously runs bnge_aux_dev_release(), which sets bd->auxr_dev = NULL and frees the underlying object. The subsequent bd->auxr_dev->net = bd->netdev then dereferences NULL, which is not a good thing to have happen when trying to clean up from an error. Add the missing return, as the auxiliary bus documentation states is a requirement (seems that LLM tools read documentation better than humans do...)
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:14 | linux | 6.19.14-1 | DEBIAN-CVE-2026-31621 |
| Ubuntu:26.04:LTS | linux | 7.0.0-27.27 | UBUNTU-CVE-2026-31621 |
| Ubuntu:26.04:LTS | linux | 7.0.0-27.27 | USN-8488-1 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:26.04:LTS | linux-aws | 7.0.0-1008.8 | UBUNTU-CVE-2026-31621 |
| Ubuntu:26.04:LTS | linux-aws | 7.0.0-1008.8 | USN-8488-1 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:24.04:LTS | linux-aws-6.14 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-aws-6.5 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:26.04:LTS | linux-azure | 7.0.0-1010.10 | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:24.04:LTS | linux-azure-6.11 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-azure-6.5 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:26.04:LTS | linux-azure-fde | 7.0.0-1009.9 | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:26.04:LTS | linux-gcp | 7.0.0-1007.7 | USN-8488-1 |
| Ubuntu:26.04:LTS | linux-gcp | 7.0.0-1007.7 | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:24.04:LTS | linux-gcp-6.11 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:24.04:LTS | linux-gcp-6.14 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-gcp-6.5 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:24.04:LTS | linux-hwe-6.11 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:24.04:LTS | linux-hwe-6.14 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-hwe-6.5 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:24.04:LTS | linux-hwe-7.0 | 7.0.0-28.28~24.04.1 | UBUNTU-CVE-2026-31621 |
| Ubuntu:26.04:LTS | linux-ibm | 7.0.0-1009.9 | USN-8488-1 |
| Ubuntu:26.04:LTS | linux-ibm | 7.0.0-1009.9 | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:24.04:LTS | linux-lowlatency-hwe-6.11 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.5 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:26.04:LTS | linux-nvidia | 7.0.0-1013.13 | USN-8507-1 |
| Ubuntu:26.04:LTS | linux-nvidia | 7.0.0-1013.13 | UBUNTU-CVE-2026-31621 |
| Ubuntu:24.04:LTS | linux-nvidia-6.11 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-nvidia-6.5 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:24.04:LTS | linux-oem-6.11 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:24.04:LTS | linux-oem-6.14 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-oem-6.5 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:26.04:LTS | linux-oracle | 7.0.0-1007.7 | UBUNTU-CVE-2026-31621 |
| Ubuntu:26.04:LTS | linux-oracle | 7.0.0-1007.7 | USN-8488-1 |
| Ubuntu:24.04:LTS | linux-oracle-6.14 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-oracle-6.5 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:26.04:LTS | linux-raspi | 7.0.0-1014.14 | USN-8488-2 |
| Ubuntu:26.04:LTS | linux-raspi | 7.0.0-1014.14 | UBUNTU-CVE-2026-31621 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:24.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:26.04:LTS | linux-realtime | 7.0.0-27.27.1 | UBUNTU-CVE-2026-31621 |
| Ubuntu:26.04:LTS | linux-realtime | 7.0.0-27.27.1 | USN-8488-1 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:24.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:26.04:LTS | linux-riscv | 7.0.0-27.27.1 | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:24.04:LTS | linux-riscv-6.14 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-riscv-6.5 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2026-31621 |
| Ubuntu:22.04:LTS | linux-starfive-6.5 | no fix listed | UBUNTU-CVE-2026-31621 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 8ac050ec3b1c0dcb5e89cf86fe2ebe0afcc73554 – before 38c383ec6d37f4b5597f8e6a1f5c2ab31ea01d3a8ac050ec3b1c0dcb5e89cf86fe2ebe0afcc73554 – before 87bc3557c708110d83086bf091328271298a44e38ac050ec3b1c0dcb5e89cf86fe2ebe0afcc73554 – before 8b0c25528cb64f71a73b5c0d49cbbcb68540a4ce |
| Linux | Linux | 6.19 |