netdev - Re: [PATCH net-next v2] bpf: fix verifier NULL pointer dereference

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Fri, 03 Nov 2017 15:50:16 +0900 (KST)
From:   David Miller <davem@...emloft.net>
To:     kraigatgoog@...il.com
Cc:     ast@...com, netdev@...r.kernel.org
Subject: Re: [PATCH net-next v2] bpf: fix verifier NULL pointer dereference

From: Craig Gallek <kraigatgoog@...il.com>
Date: Thu,  2 Nov 2017 11:18:01 -0400

> From: Craig Gallek <kraig@...gle.com>
> 
> do_check() can fail early without allocating env->cur_state under
> memory pressure.  Syzkaller found the stack below on the linux-next
> tree because of this.
 ...
> Fixes: 638f5b90d460 ("bpf: reduce verifier memory consumption")
> Fixes: 1969db47f8d0 ("bpf: fix verifier memory leaks")
> Signed-off-by: Craig Gallek <kraig@...gle.com>

Applied, thanks Craig.