Date: Fri, 21 Jun 2019 12:54:34 +0200 From: Romain Perier <romain.perier@...il.com> To: Kees Cook <keescook@...omium.org> Cc: Kernel Hardening <kernel-hardening@...ts.openwall.com> Subject: Re: Audit and fix all misuse of NLA_STRING: STATUS Hi! Yeah, I have found some inconsistencies, but I am not 100% sure for all of these. I will double check and review the code closely. I keep you in touch. Regards, Romain Le jeu. 20 juin 2019 à 18:15, Kees Cook <keescook@...omium.org> a écrit : > > On Tue, Jun 18, 2019 at 07:56:42PM +0200, Romain Perier wrote: > > Hi ! > > > > Here a first review, you can get the complete list here: > > > > https://salsa.debian.org/rperier-guest/linux-tree/raw/next/STATUS > > Cool! You identified three issues: > > net/netfilter/nfnetlink_cthelper.c: > NF_CT_HELPER_NAME_LEN is used instead of NF_CT_EXP_POLICY_NAME_LEN > > net/netfilter/ipset/ip_set_list_set.c: > IPSET_ATTR_NAME and IPSET_ATTR_NAMEREF both have a len of > IPSET_MAXNAMELEN for a string of size IPSET_MAXNAMELEN > > net/openvswitch/conntrack.c: > maxlen of NF_CT_HELPER_NAME_LEN with a string of size > NF_CT_HELPER_NAME_LEN. maxlen of CTNL_TIMEOUT_NAME_MAX with a > string of size CTNL_TIMEOUT_NAME_MAX > > I haven't looked closely at this myself yet, but I think the next step > would be to write patches for each of these. And while doing that, have > an eye toward thinking about how each case could be made more robust in > the future to avoid these kinds of flaws returning. > > Nice! > > -- > Kees Cook
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