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Date:   Mon, 25 May 2020 18:10:08 -0700 (PDT)
From:   David Miller <>
Subject: Re: [PATCH] bridge: mrp: Fix out-of-bounds read in br_mrp_parse

From: Horatiu Vultur <>
Date: Mon, 25 May 2020 09:55:41 +0000

> The issue was reported by syzbot. When the function br_mrp_parse was
> called with a valid net_bridge_port, the net_bridge was an invalid
> pointer. Therefore the check br->stp_enabled could pass/fail
> depending where it was pointing in memory.
> The fix consists of setting the net_bridge pointer if the port is a
> valid pointer.
> Reported-by:
> Fixes: 6536993371fa ("bridge: mrp: Integrate MRP into the bridge")
> Signed-off-by: Horatiu Vultur <>

Applied to net-next, thanks.

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