[PATCH v2 2/3] net: ethernet: mvpp2_main: fix possible OOB write in mvpp2_ethtool_get_rxnfc()

[Russell King (Oracle)]

On Fri, Sep 08, 2023 at 02:19:49PM +0800, Hangyu Hua wrote:
> rules is allocated in ethtool_get_rxnfc and the size is determined by
> rule_cnt from user space. So rule_cnt needs to be check before using
> rules to avoid OOB writing or NULL pointer dereference.
> 
> Fixes: 90b509b39ac9 ("net: mvpp2: cls: Add Classification offload support")
> Signed-off-by: Hangyu Hua <hbh25y at gmail.com>

Reviewed-by: Russell King (Oracle) <rmk+kernel at armlinux.org.uk>

Thanks!

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