Re: [PATCH net] sctp: validate embedded INIT chunk and address list lengths in cookie

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <[email protected]>:

On Sun,  7 Jun 2026 19:03:47 -0400 you wrote:
> sctp_unpack_cookie() only checked that the embedded INIT chunk length
> did not exceed the remaining cookie payload, but did not ensure that the
> INIT chunk is large enough to contain a complete INIT header.
> 
> A malformed COOKIE_ECHO can therefore carry a truncated INIT chunk whose
> length field is smaller than sizeof(struct sctp_init_chunk).  Later,
> sctp_process_init() accesses INIT parameters unconditionally, which may
> lead to out-of-bounds reads.
> 
> [...]

Here is the summary with links:
  - [net] sctp: validate embedded INIT chunk and address list lengths in cookie
    https://git.kernel.org/netdev/net/c/6f4c80a2a7e6

You are awesome, thank you!
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