[PATCH 0/4] net/axgbe: fix resource leaks and OOB access

[Stephen Hemminger]

On Wed, 18 Feb 2026 08:40:58 -0800
Stephen Hemminger <stephen at networkplumber.org> wrote:

> Code review of the axgbe PMD identified several correctness bugs,
> primarily around resource management on error paths in device
> initialization and an out-of-bounds descriptor ring access.
> 
> Patch 1 fixes multiple resource leak paths in eth_axgbe_dev_init():
>   - mac_addrs leaked when hash_mac_addrs allocation fails
>   - hash_mac_addrs leaked when phy_init() fails
>   - rte_intr_callback_register() return value unchecked
>   - DMA reset failure via hw_if.exit() logged but not propagated
> 
> Patch 2 fixes wrapper_rx_desc_init() which only releases the
> current queue on mbuf allocation failure, leaking all mbufs
> from previously initialized queues.
> 
> Patch 3 adds pthread_mutex_destroy() calls in axgbe_dev_close()
> for the four mutexes created during init.
> 
> Patch 4 fixes an out-of-bounds read in both Rx and Tx descriptor
> status functions where desc[idx + offset] can exceed the ring
> size. The offset is now folded into the index before masking.
> 
> 
> Stephen Hemminger (4):
>   net/axgbe: fix resource leaks in device init error paths
>   net/axgbe: fix Rx queue leak on descriptor init failure
>   net/axgbe: destroy mutexes on device close
>   net/axgbe: fix descriptor status out-of-bounds access

Since these were code review generated fixes, still holding off for
maintainer of this driver to verify