Re: [syzbot] [wireguard?] [jfs?] KASAN: slab-use-after-free Read in wg_noise_keypair_get

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To: "Jason A. Donenfeld" <Jason@xxxxxxxxx>, syzbot <syzbot+96eb4e0d727f0ae998a6@xxxxxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [syzbot] [wireguard?] [jfs?] KASAN: slab-use-after-free Read in wg_noise_keypair_get
From: Dave Kleikamp <dave.kleikamp@xxxxxxxxxx>
Date: Tue, 18 Jul 2023 16:02:53 -0500
Cc: broonie@xxxxxxxxxx, davem@xxxxxxxxxxxxx, edumazet@xxxxxxxxxx, jfs-discussion@xxxxxxxxxxxxxxxxxxxxx, kuba@xxxxxxxxxx, kuninori.morimoto.gx@xxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, pabeni@xxxxxxxxxx, povik+lin@xxxxxxxxxxx, syzkaller-bugs@xxxxxxxxxxxxxxxx, wireguard@xxxxxxxxxxxxxxx
In-reply-to: <CAHmME9reBny-ufJp58uOg+KdMptircBRhLFd-N2KwxNUp6myTA@mail.gmail.com>
User-agent: Mozilla Thunderbird

On 7/18/23 12:57PM, Jason A. Donenfeld wrote:

Freed in:

  diUnmount+0xf3/0x100 fs/jfs/jfs_imap.c:195
  jfs_umount+0x186/0x3a0 fs/jfs/jfs_umount.c:63
  jfs_put_super+0x8a/0x190 fs/jfs/super.c:194

So maybe not a wg issue?


Maybe not. It could possibly fixed by:
https://github.com/kleikamp/linux-shaggy/commit/6e2bda2c192d0244b5a78b787ef20aa10cb319b7

Shaggy

Follow-Ups:
- Re: [Jfs-discussion] [syzbot] [wireguard?] [jfs?] KASAN: slab-use-after-free Read in wg_noise_keypair_get
  - From: Christian Kujau

References:
- [syzbot] [wireguard?] [jfs?] KASAN: slab-use-after-free Read in wg_noise_keypair_get
  - From: syzbot
- Re: [syzbot] [wireguard?] [jfs?] KASAN: slab-use-after-free Read in wg_noise_keypair_get
  - From: Jason A. Donenfeld

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