Re: [PATCH net] lib: cpu_rmap: Fix potential use-after-free in irq_cpu_rmap_release()

[Simon Horman]

On Fri, Jun 02, 2023 at 08:28:15PM +0200, Ben Hutchings wrote:
> irq_cpu_rmap_release() calls cpu_rmap_put(), which may free the rmap.
> So we need to clear the pointer to our glue structure in rmap before
> doing that, not after.
> 
> Fixes: 4e0473f1060a ("lib: cpu_rmap: Avoid use after free on rmap->obj ...")
> Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>

Reviewed-by: Simon Horman <simon.horman@xxxxxxxxxxxx>