From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+8a1d152fba6b41f760ae@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [bluetooth?] KASAN: slab-out-of-bounds Read in l2cap_sock_setsockopt
Date: Fri, 5 Apr 2024 18:06:20 +0800 [thread overview]
Message-ID: <20240405100620.953-1-hdanton@sina.com> (raw)
In-Reply-To: <000000000000b48cb0061553f087@google.com>
On Thu, 04 Apr 2024 23:55:25 -0700
> syzbot found the following issue on:
>
> HEAD commit: 707081b61156 Merge branch 'for-next/core', remote-tracking..
> git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15c6098d180000
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git fe46a7dd189e
--- x/net/bluetooth/l2cap_sock.c
+++ y/net/bluetooth/l2cap_sock.c
@@ -960,7 +960,7 @@ static int l2cap_sock_setsockopt(struct
break;
}
- if (copy_from_sockptr(&opt, optval, sizeof(u32))) {
+ if (optlen < sizeof(u32) || copy_from_sockptr(&opt, optval, sizeof(u32))) {
err = -EFAULT;
break;
}
--
next prev parent reply other threads:[~2024-04-05 10:06 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-05 6:55 [syzbot] [bluetooth?] KASAN: slab-out-of-bounds Read in l2cap_sock_setsockopt syzbot
2024-04-05 9:50 ` Edward Adam Davis
2024-04-06 13:03 ` syzbot
2024-04-05 10:06 ` Hillf Danton [this message]
2024-04-06 13:17 ` syzbot
-- strict thread matches above, loose matches on Subject: below --
2024-04-05 6:55 [syzbot] [bluetooth?] KASAN: slab-out-of-bounds Read in sco_sock_setsockopt syzbot
2024-04-05 10:20 ` [syzbot] [bluetooth?] KASAN: slab-out-of-bounds Read in l2cap_sock_setsockopt Edward Adam Davis
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