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

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Message-ID: <97a9c205-2074-07f8-ae9d-9f2b4aebbf9a@oracle.com>
Date:   Tue, 18 Jul 2023 16:02:53 -0500
From:   Dave Kleikamp <dave.kleikamp@...cle.com>
To:     "Jason A. Donenfeld" <Jason@...c4.com>,
        syzbot <syzbot+96eb4e0d727f0ae998a6@...kaller.appspotmail.com>
Cc:     broonie@...nel.org, davem@...emloft.net, edumazet@...gle.com,
        jfs-discussion@...ts.sourceforge.net, kuba@...nel.org,
        kuninori.morimoto.gx@...esas.com, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        pabeni@...hat.com, povik+lin@...ebit.org,
        syzkaller-bugs@...glegroups.com, wireguard@...ts.zx2c4.com
Subject: Re: [syzbot] [wireguard?] [jfs?] KASAN: slab-use-after-free Read in
 wg_noise_keypair_get

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