| Message ID | 20220510022826.2388423-5-grundler@chromium.org (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 2120b7f4d128433ad8c5f503a9584deba0684901 |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | net: atlantic: more fuzzing fixes | expand |
| Context | Check | Description |
|---|---|---|
| netdev/tree_selection | success | Guessing tree name failed - patch did not apply |
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c index d875ce3ec759..15ede7285fb5 100644 --- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c +++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c @@ -889,6 +889,13 @@ int hw_atl_b0_hw_ring_tx_head_update(struct aq_hw_s *self, err = -ENXIO; goto err_exit; } + + /* Validate that the new hw_head_ is reasonable. */ + if (hw_head_ >= ring->size) { + err = -ENXIO; + goto err_exit; + } + ring->hw_head = hw_head_; err = aq_hw_err_from_flags(self);
Bounds check hw_head index provided by NIC to verify it lies within the TX buffer ring. Reported-by: Aashay Shringarpure <aashay@google.com> Reported-by: Yi Chou <yich@google.com> Reported-by: Shervin Oloumi <enlightened@google.com> Signed-off-by: Grant Grundler <grundler@chromium.org> --- drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c | 7 +++++++ 1 file changed, 7 insertions(+)