Re: [PATCH net v3] ipv6: rpl: fix NULL dereference of idev in ipv6_rpl_srh_rcv()

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@xxxxxxxxxx>:

On Mon, 17 Aug 2026 15:26:44 +0200 you wrote:
> ipv6_rpl_srh_rcv() dereferences idev from __in6_dev_get() without a NULL
> check when reading idev->cnf.rpl_seg_enabled.
> 
> When the device's MTU drops below IPV6_MIN_MTU, addrconf_ifdown() clears
> dev->ip6_ptr through RCU_INIT_POINTER(). A packet that passed the idev
> check in ip6_rcv_core() can then reach ipv6_rpl_srh_rcv() with
> dev->ip6_ptr already NULL.
> 
> [...]

Here is the summary with links:
  - [net,v3] ipv6: rpl: fix NULL dereference of idev in ipv6_rpl_srh_rcv()
    https://git.kernel.org/netdev/net/c/f826df95332c

You are awesome, thank you!
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