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Date: Thu, 12 May 2022 04:30:12 +0000 From: patchwork-bot+netdevbpf@...nel.org To: Yuntao Wang <ytcoode@...il.com> Cc: ast@...nel.org, daniel@...earbox.net, andrii@...nel.org, kafai@...com, songliubraving@...com, yhs@...com, john.fastabend@...il.com, kpsingh@...nel.org, netdev@...r.kernel.org, bpf@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH bpf-next] bpf: Fix potential array overflow in bpf_trampoline_get_progs() Hello: This patch was applied to bpf/bpf-next.git (master) by Alexei Starovoitov <ast@...nel.org>: On Sat, 30 Apr 2022 21:08:03 +0800 you wrote: > The cnt value in the 'cnt >= BPF_MAX_TRAMP_PROGS' check does not > include BPF_TRAMP_MODIFY_RETURN bpf programs, so the number of > the attached BPF_TRAMP_MODIFY_RETURN bpf programs in a trampoline > can exceed BPF_MAX_TRAMP_PROGS. > > When this happens, the assignment '*progs++ = aux->prog' in > bpf_trampoline_get_progs() will cause progs array overflow as the > progs field in the bpf_tramp_progs struct can only hold at most > BPF_MAX_TRAMP_PROGS bpf programs. > > [...] Here is the summary with links: - [bpf-next] bpf: Fix potential array overflow in bpf_trampoline_get_progs() https://git.kernel.org/bpf/bpf-next/c/a2aa95b71c9b You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html
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