CVE-2026-72090
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk5th percentile - higher than 5% of all known CVEs
Summary
In the Linux kernel accel/amdxdna driver, amdxdna_drm_sync_bo_ioctl() for SYNC_DIRECT_FROM_DEVICE passes the BO's client pointer to amdxdna_hwctx_sync_debug_bo() instead of the ioctl file's client. This causes the wrong client to be used as the handle namespace and hardware context owner, potentially leading to synchronization errors. The fix passes filp->driver_priv instead.
Risk Assessment
Incorrect client usage may lead to debug buffer synchronization errors, potentially causing driver malfunction or information leakage.
Recommendation
Apply the Linux kernel update containing the fix for CVE-2026-72090.
Original NVD description (English source)
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.