Messages in this thread | | | Subject | Re: [PATCH net] tls: fix NULL deref on tls_sw_splice_eof() with empty record | From | patchwork-bot+netdevbpf@kernel ... | Date | Thu, 23 Nov 2023 17:00:26 +0000 |
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Hello:
This patch was applied to netdev/net.git (main) by Jakub Kicinski <kuba@kernel.org>:
On Wed, 22 Nov 2023 22:44:47 +0100 you wrote: > syzkaller discovered that if tls_sw_splice_eof() is executed as part of > sendfile() when the plaintext/ciphertext sk_msg are empty, the send path > gets confused because the empty ciphertext buffer does not have enough > space for the encryption overhead. This causes tls_push_record() to go on > the `split = true` path (which is only supposed to be used when interacting > with an attached BPF program), and then get further confused and hit the > tls_merge_open_record() path, which then assumes that there must be at > least one populated buffer element, leading to a NULL deref. > > [...]
Here is the summary with links: - [net] tls: fix NULL deref on tls_sw_splice_eof() with empty record https://git.kernel.org/netdev/net/c/53f2cb491b50
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