Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Use caller client for debug BO sync amdxdna_drm_sync_bo_ioctl() looks up args->handle in the ioctl caller's drm_file. For SYNC_DIRECT_FROM_DEVICE, it then calls amdxdna_hwctx_sync_debug_bo(), but passes abo->client. amdxdna_hwctx_sync_debug_bo() uses the passed client both as the handle namespace for debug_bo_hdl and as the owner of the hardware context xarray. Those must match the file that supplied args->handle. The BO's stored client pointer is object state, not the ioctl context. Pass filp->driver_priv instead, matching the original handle lookup.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 7ea0468380216c10b73633b976d33efa8c12d375 before 216e43d93dd49ec253052741aa476e51a8c54cd8; affected 7ea0468380216c10b73633b976d33efa8c12d375 before 7caf2a2351d4053075670ff3e26a6815da0a9e1e |
| Linux / Linux | affected 6.19; unaffected 0 before 6.19; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.