CVE-2026-74706
Description
In the Linux kernel, the following vulnerability has been resolved: bnge: Fix NULL pointer dereference in aux device release If allocation of auxr_dev fails during auxiliary device setup, the error path calls auxiliary_device_uninit(), which eventually invokes bnge_aux_dev_release(). The release callback unconditionally dereferences aux_priv->auxr_dev->pdev to retrieve the parent bnge_dev. Since auxr_dev has not yet been allocated on this failure path, the dereference results in a NULL pointer exception Retrieve the parent bnge_dev from the auxiliary device's parent instead of auxr_dev, and free auxr_dev only when it was successfully allocated. This allows the release callback to correctly clean up partially initialized auxiliary devices.
How to fix
- Linux Linux83ef2f3cab7fe6dd9155cd598dc64be524d963a9, 1cb4298810e27e037d3ca07286ecbb97e89ba58d or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 8ac050ec3b1c0dcb5e89cf86fe2ebe0afcc73554 ≤ v < 83ef2f3cab7fe6dd9155cd598dc64be524d963a9, 8ac050ec3b1c0dcb5e89cf86fe2ebe0afcc73554 ≤ v < 1cb4298810e27e037d3ca07286ecbb97e89ba58d, 6.19 | 83ef2f3cab7fe6dd9155cd598dc64be524d963a9, 1cb4298810e27e037d3ca07286ecbb97e89ba58d |
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