netdev - Crash in CIPSO_V4_TAG

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Fri, 13 Jul 2012 18:08:41 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	netdev@...r.kernel.org
Subject: Crash in CIPSO_V4_TAG_LOCAL handling

DaveM asked that this goes direct to the list so ...

Looking at some static code analyser output and the results seem valid on
this one:

ip_options_compile called with skb = NULL and an IPOPT_CIPSO option calls
into cipso_v4_validate, which if the option is CIPSO_V4_TAG_LOCAL then
dereferences skb->dev and explodes.

All the other cases appear to correctly avoid or check it versus NULL

Alan
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html