Re: [PATCH net] tipc: fix integer overflow in tipc_recvmsg() and tipc_recvstream()

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski [off-list ref]:

On Mon, 20 Jul 2026 17:41:03 -0400 you wrote:

In tipc_recvmsg(), the copy length is computed as:

  copy = min_t(int, dlen - offset, buflen);

buflen is size_t but min_t(int, ...) casts it to int. When buflen
exceeds INT_MAX (e.g. 0xFFFFFFFF via io_uring provided buffers), it
wraps negative, wins the comparison, and the negative copy length
propagates to simple_copy_to_iter() where int-to-size_t promotion
makes it SIZE_MAX, triggering a WARN_ON. tipc_recvstream() has the
same pattern.

[...]

Here is the summary with links:
  - [net] tipc: fix integer overflow in tipc_recvmsg() and tipc_recvstream()
    https://git.kernel.org/netdev/net/c/47f42ff521b4

You are awesome, thank you!
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