Linux-WPAN Archive on
 help / color / Atom feed
From: Jiri Pirko <>
To: syzbot <>
Subject: Re: KASAN: use-after-free Read in __cfg8NUM_wpan_dev_from_attrs
Date: Mon, 7 Oct 2019 16:42:45 +0200
Message-ID: <20191007144245.GC2326@nanopsycho> (raw)
In-Reply-To: <>

Mon, Oct 07, 2019 at 04:19:09PM CEST, wrote:
>syzbot found the following crash on:
>HEAD commit:    056ddc38 Merge branch 'stmmac-next'
>git tree:       net-next
>console output:
>kernel config:
>dashboard link:
>compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
>syz repro:
>C reproducer:
>The bug was bisected to:
>commit 75cdbdd089003cd53560ff87b690ae911fa7df8e
>Author: Jiri Pirko <>
>Date:   Sat Oct 5 18:04:37 2019 +0000
>    net: ieee802154: have genetlink code to parse the attrs during dumpit
>bisection log:
>final crash:
>console output:
>IMPORTANT: if you fix the bug, please add the following tag to the commit:
>Fixes: 75cdbdd08900 ("net: ieee802154: have genetlink code to parse the attrs
>during dumpit")
>netlink: 'syz-executor134': attribute type 6 has an invalid length.
>BUG: KASAN: use-after-free in nla_memcpy+0xa2/0xb0 lib/nlattr.c:572

I'm on this.

      reply index

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-07 14:19 syzbot
2019-10-07 14:42 ` Jiri Pirko [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20191007144245.GC2326@nanopsycho \ \ \ \ \ \ \ \ \ \ \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-WPAN Archive on

Archives are clonable:
	git clone --mirror linux-wpan/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-wpan linux-wpan/ \
	public-inbox-index linux-wpan

Example config snippet for mirrors

Newsgroup available over NNTP:

AGPL code for this site: git clone