From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 32DCA364025; Wed, 21 Jan 2026 03:30:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768966208; cv=none; b=sH3+nimUixWqp0dlRv6KsR/36h5tAw+i2IJTF5pkL/tGntv1ptwjp12uxHOJvtBj/B54QeK2IgQEpS7+6rTX7Qx3o7dn4xJcu4DwtBKwugWlHDRRt1z3roWIvKB26cf68qcp+Gp2joHak5fo14yw1qVqa6Q9PAtFs4lmp8/3lm8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768966208; c=relaxed/simple; bh=pmG8JFCS1u+FnByV/e/6pKfcMObTvK9VWIEVv5BJTWE=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=F3jk2Ipet1tt5ytJiPrhZZpjJ4YQzffk23p7C2bk1azyBA2Llx4mVG0CAdbvPsRLWAJ+/qewYxmwf/StDah5i2ChirLskvE0mFWAWMLDm2oS3MSyZgcwCIBt//XXlhRBM+7JRaZ1p+2JFyDs09VWSsTKGIztqanT0N11Ab0t5oc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KvMeGBHj; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="KvMeGBHj" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BAB08C16AAE; Wed, 21 Jan 2026 03:30:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768966207; bh=pmG8JFCS1u+FnByV/e/6pKfcMObTvK9VWIEVv5BJTWE=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=KvMeGBHjfYvHEWpPOLZ+aTizoQnixGSzDMtfs8SCDdtg8Vx1tdjA+p58O6pd3oS/V ntrOjN5d7c1MSKY7KcaHIfiYtlm6NBuK0WrKJ1+feQoKsAKDcbrF+Prbu3RZFUCB7a NR8XobsKDWS4vb/sTdfE33wgqm6z53Uz+3rPFcMvkbC52rXQkaFmELfu8hpN+ajtr3 PffOjXJI5asexFfjCdNoDlo5n5J4ox7ApJOv+5N9TlH2ATP0+vnFem6fImK0ZS7Rtt s6L93+slCaeKur9yhL4LC0+m1YNsyGJnIiPCLQFLe873bnOGR52Uo4gsD2ZgWErqKP nCs6QtlyaDMrQ== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 4EBC8380820D; Wed, 21 Jan 2026 03:30:06 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH] netrom: fix double-free in nr_route_frame() From: patchwork-bot+netdevbpf@kernel.org Message-Id: <176896620510.713092.169111915367029765.git-patchwork-notify@kernel.org> Date: Wed, 21 Jan 2026 03:30:05 +0000 References: <20260119063359.10604-1-aha310510@gmail.com> In-Reply-To: <20260119063359.10604-1-aha310510@gmail.com> To: Jeongjun Park Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, linux-hams@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, syzbot+999115c3bf275797dc27@syzkaller.appspotmail.com Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Mon, 19 Jan 2026 15:33:59 +0900 you wrote: > In nr_route_frame(), old_skb is immediately freed without checking if > nr_neigh->ax25 pointer is NULL. Therefore, if nr_neigh->ax25 is NULL, > the caller function will free old_skb again, causing a double-free bug. > > Therefore, to prevent this, we need to modify it to check whether > nr_neigh->ax25 is NULL before freeing old_skb. > > [...] Here is the summary with links: - netrom: fix double-free in nr_route_frame() https://git.kernel.org/netdev/net/c/ba1096c31528 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html