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
| ||
|
Message-ID: <6a6fff5b-f060-2d31-976d-9eea491bffae@embeddedor.com> Date: Thu, 17 Aug 2023 15:24:35 -0600 From: "Gustavo A. R. Silva" <gustavo@...eddedor.com> To: Kees Cook <keescook@...omium.org>, Johannes Berg <johannes@...solutions.net> Cc: "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, linux-wireless@...r.kernel.org, netdev@...r.kernel.org, Nathan Chancellor <nathan@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>, Tom Rix <trix@...hat.com>, linux-kernel@...r.kernel.org, llvm@...ts.linux.dev, linux-hardening@...r.kernel.org Subject: Re: [PATCH 6/7] wifi: cfg80211: Annotate struct cfg80211_scan_request with __counted_by On 8/17/23 15:15, Kees Cook wrote: > Prepare for the coming implementation by GCC and Clang of the __counted_by > attribute. Flexible array members annotated with __counted_by can have > their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS > (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family > functions). > > As found with Coccinelle[1], add __counted_by for struct cfg80211_scan_request. > Additionally, since the element count member must be set before accessing > the annotated flexible array member, move its initialization earlier. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Johannes Berg <johannes@...solutions.net> > Cc: "David S. Miller" <davem@...emloft.net> > Cc: Eric Dumazet <edumazet@...gle.com> > Cc: Jakub Kicinski <kuba@...nel.org> > Cc: Paolo Abeni <pabeni@...hat.com> > Cc: linux-wireless@...r.kernel.org > Cc: netdev@...r.kernel.org > Signed-off-by: Kees Cook <keescook@...omium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@...nel.org> Thanks -- Gustavo > --- > include/net/cfg80211.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h > index 6efe216c01d2..a2afc94a5408 100644 > --- a/include/net/cfg80211.h > +++ b/include/net/cfg80211.h > @@ -2544,7 +2544,7 @@ struct cfg80211_scan_request { > struct cfg80211_scan_6ghz_params *scan_6ghz_params; > > /* keep last */ > - struct ieee80211_channel *channels[]; > + struct ieee80211_channel *channels[] __counted_by(n_channels); > }; > > static inline void get_random_mask_addr(u8 *buf, const u8 *addr, const u8 *mask)
Powered by blists - more mailing lists