Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 8ac050ec3b1c0dcb5e89cf86fe2ebe0afcc73554 before 83ef2f3cab7fe6dd9155cd598dc64be524d963a9; affected 8ac050ec3b1c0dcb5e89cf86fe2ebe0afcc73554 before 1cb4298810e27e037d3ca07286ecbb97e89ba58d |
| Linux / Linux | affected 6.19; unaffected 0 before 6.19; unaffected 7.1.9 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.