Subject: Re: [PATCH v3] net: sctp: fix KMSAN uninit-value in sctp_inq_pop

From: [email-masked]
Date: Thu, 30 Oct 2025 10:50:06 +0000

Hello:

This patch was applied to netdev/net.git (main)
by Paolo Abeni <[email-masked]>:

On Sun, 26 Oct 2025 22:03:12 +0530 you wrote:
> Fix an issue detected by syzbot:
> 
> KMSAN reported an uninitialized-value access in sctp_inq_pop
> BUG: KMSAN: uninit-value in sctp_inq_pop
> 
> The issue is actually caused by skb trimming via sk_filter() in sctp_rcv().
> In the reproducer, skb->len becomes 1 after sk_filter(), which bypassed the
> original check:
> 
> [...]

Here is the summary with links:
  - [v3] net: sctp: fix KMSAN uninit-value in sctp_inq_pop
    https://git.kernel.org/netdev/net/c/51e5ad549c43

You are awesome, thank you!
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