In the Linux kernel, the following vulnerability has been resolved: net: caif: clear client service pointer on teardown `caif_connect()` can tear down an existing client after remote shutdown by calling `caif_disconnect_client()` followed by `caif_free_client()`. `caif_free_client()` releases the service layer referenced by `adap_layer->dn`, but leaves that pointer stale. When the socket is later destroyed, `caif_sock_destructor()` calls `caif_free_client()` again and dereferences the freed s
In the Linux kernel, the following vulnerability has been resolved:
net: caif: clear client service pointer on teardown
caif_connect() can tear down an existing client after remote shutdown by
calling caif_disconnect_client() followed by caif_free_client().
caif_free_client() releases the service layer referenced by
adap_layer->dn, but leaves that pointer stale.
When the socket is later destroyed, caif_sock_destructor() calls
caif_free_client() again and dereferences the freed service pointer.
Clear the client/service links before releasing the service object so repeated teardown becomes harmless.
Why this VPI (explainable, experimental)
VPI breakdown
| Impact | 55.00 |
| Exploitation signal(No additional exploitation signal) | ×1.00 |
| VPI | 55.00 |
VPI formula vpi-v1