From: Jakub Kicinski <kuba@kernel.org>
To: Jiayuan Chen <jiayuan.chen@linux.dev>
Cc: netdev@vger.kernel.org,
syzbot+819eb928d120d2bdad0e@syzkaller.appspotmail.com,
Kuniyuki Iwashima <kuniyu@google.com>,
David Ahern <dsahern@kernel.org>,
Ido Schimmel <idosch@nvidia.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>, Simon Horman <horms@kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net v2] ipv6: anycast: insert aca into global hash under idev->lock
Date: Fri, 29 May 2026 13:51:16 -0700 [thread overview]
Message-ID: <20260529135116.183e083e@kernel.org> (raw)
In-Reply-To: <20260529152219.235475-1-jiayuan.chen@linux.dev>
On Fri, 29 May 2026 23:22:18 +0800 Jiayuan Chen wrote:
> syzbot reported a splat [1]: a slab-use-after-free in
> ipv6_chk_acast_addr(), which walks the global inet6_acaddr_lst[] hash
> under RCU and dereferences a struct ifacaddr6 that has already been
> freed while still linked in the hash, so a later reader walks into a
> dangling node.
Please do not violate the 24h repost grace period on netdev.
We are tracking the violations now, if you keep doing this
there will be consequences..
prev parent reply other threads:[~2026-05-29 20:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-29 15:22 [PATCH net v2] ipv6: anycast: insert aca into global hash under idev->lock Jiayuan Chen
2026-05-29 20:51 ` Jakub Kicinski [this message]
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