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Subject: Re: [Intel-wired-lan] [PATCH] e1000: fix OOB in e1000_tbi_should_accept() X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" On 11/23/2025 7:45 PM, Guangshuo Li wrote: > Hi Tony, all, > > Thanks for the review. As suggested by Tony, I’ll keep the declarations > at the top and place the bounds checks before assigning last_byte. I’ll > send a v2 with the following change: > > static bool e1000_tbi_should_accept(struct e1000_adapter *adapter, >                                     u8 status, u8 errors, >                                     u32 length, const u8 *data) > { >     struct e1000_hw *hw = &adapter->hw; >     u8 last_byte; > >     /* Guard against OOB on data[length - 1] */ >     if (unlikely(!length)) >         return false; > >     /* Upper bound: length must not exceed rx_buffer_len */ >     if (unlikely(length > adapter->rx_buffer_len)) >         return false; > >     last_byte = data[length - 1]; > >     /* existing logic follows ... */ > } > Please let me know if further adjustments are preferred. This looks along the lines of what I was expecting. Thanks, Tony > Best regards, > Guangshuo Li