Re: [PATCH 39/64] mac80211: Use memset_after() to clear tx status

[PATCH 00/64] Introduce strict memcpy() bounds checking · Kees Cook <hidden> · 2021-07-27
[PATCH 02/64] mac80211: Use flex-array for radiotap header bitmap · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 02/64] mac80211: Use flex-array for radiotap header bitmap · Dan Carpenter <hidden> · 2021-07-28
Re: [PATCH 02/64] mac80211: Use flex-array for radiotap header bitmap · David Sterba <hidden> · 2021-07-28
Re: [PATCH 02/64] mac80211: Use flex-array for radiotap header bitmap · Kees Cook <hidden> · 2021-07-28
Re: [PATCH 02/64] mac80211: Use flex-array for radiotap header bitmap · David Sterba <hidden> · 2021-07-29
Re: [PATCH 02/64] mac80211: Use flex-array for radiotap header bitmap · Kees Cook <hidden> · 2021-07-30
Re: [PATCH 02/64] mac80211: Use flex-array for radiotap header bitmap · Kees Cook <hidden> · 2021-07-28
Re: [PATCH 02/64] mac80211: Use flex-array for radiotap header bitmap · Kees Cook <hidden> · 2021-07-28
Re: [PATCH 02/64] mac80211: Use flex-array for radiotap header bitmap · Kees Cook <hidden> · 2021-07-28
Re: [PATCH 02/64] mac80211: Use flex-array for radiotap header bitmap · Dan Carpenter <hidden> · 2021-07-29
[PATCH 08/64] staging: rtl8192u: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 08/64] staging: rtl8192u: Use struct_group() for memcpy() region · Greg Kroah-Hartman <gregkh@linuxfoundation.org> · 2021-07-28
[PATCH 14/64] libertas_tf: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
[PATCH 11/64] net/mlx5e: Avoid field-overflowing memcpy() · Kees Cook <hidden> · 2021-07-27
[PATCH 18/64] cxgb3: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
[PATCH 27/64] HID: cp2112: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
[PATCH 15/64] ipw2x00: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 15/64] ipw2x00: Use struct_group() for memcpy() region · Stanislav Yakovlev <stas.yakovlev@gmail.com> · 2021-07-28
[PATCH 30/64] fortify: Move remaining fortify helpers into fortify-string.h · Kees Cook <hidden> · 2021-07-27
[PATCH 29/64] lib/string: Move helper functions out of string.c · Kees Cook <hidden> · 2021-07-27
[PATCH 26/64] net/mlx5e: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
[PATCH 10/64] lib80211: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 10/64] lib80211: Use struct_group() for memcpy() region · Greg Kroah-Hartman <gregkh@linuxfoundation.org> · 2021-07-28
Re: [PATCH 10/64] lib80211: Use struct_group() for memcpy() region · Johannes Berg <johannes@sipsolutions.net> · 2021-08-13
Re: [PATCH 10/64] lib80211: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-08-13
Re: [PATCH 10/64] lib80211: Use struct_group() for memcpy() region · Johannes Berg <johannes@sipsolutions.net> · 2021-08-13
[PATCH 07/64] staging: rtl8192e: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 07/64] staging: rtl8192e: Use struct_group() for memcpy() region · Larry Finger <hidden> · 2021-07-27
Re: [PATCH 07/64] staging: rtl8192e: Use struct_group() for memcpy() region · Greg Kroah-Hartman <gregkh@linuxfoundation.org> · 2021-07-28
[PATCH 22/64] bnx2x: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
[PATCH 12/64] mwl8k: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
[PATCH 13/64] libertas: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
[PATCH 32/64] fortify: Add compile-time FORTIFY_SOURCE tests · Kees Cook <hidden> · 2021-07-27
[PATCH 31/64] fortify: Explicitly disable Clang support · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 31/64] fortify: Explicitly disable Clang support · Nathan Chancellor <nathan@kernel.org> · 2021-07-27
Re: [PATCH 31/64] fortify: Explicitly disable Clang support · Kees Cook <hidden> · 2021-07-27
[PATCH 28/64] compiler_types.h: Remove __compiletime_object_size() · Kees Cook <hidden> · 2021-07-27
[PATCH 25/64] drm/mga/mga_ioc32: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 25/64] drm/mga/mga_ioc32: Use struct_group() for memcpy() region · Greg Kroah-Hartman <gregkh@linuxfoundation.org> · 2021-07-28
Re: [PATCH 25/64] drm/mga/mga_ioc32: Use struct_group() for memcpy() region · Daniel Vetter <hidden> · 2021-07-29
Re: [PATCH 25/64] drm/mga/mga_ioc32: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-31
[PATCH 06/64] bnxt_en: Use struct_group_attr() for memcpy() region · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 06/64] bnxt_en: Use struct_group_attr() for memcpy() region · Michael Chan <michael.chan@broadcom.com> · 2021-07-28
Re: [PATCH 06/64] bnxt_en: Use struct_group_attr() for memcpy() region · "Gustavo A. R. Silva" <gustavoars@kernel.org> · 2021-07-28
[PATCH 09/64] staging: rtl8723bs: Avoid field-overflowing memcpy() · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 09/64] staging: rtl8723bs: Avoid field-overflowing memcpy() · Greg Kroah-Hartman <gregkh@linuxfoundation.org> · 2021-07-28
[PATCH 05/64] skbuff: Switch structure bounds to struct_group() · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 05/64] skbuff: Switch structure bounds to struct_group() · "Gustavo A. R. Silva" <gustavoars@kernel.org> · 2021-07-28
[PATCH 03/64] rpmsg: glink: Replace strncpy() with strscpy_pad() · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 03/64] rpmsg: glink: Replace strncpy() with strscpy_pad() · "Gustavo A. R. Silva" <gustavoars@kernel.org> · 2021-07-28
[PATCH 04/64] stddef: Introduce struct_group() helper macro · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 04/64] stddef: Introduce struct_group() helper macro · "Gustavo A. R. Silva" <gustavoars@kernel.org> · 2021-07-28
Re: [PATCH 04/64] stddef: Introduce struct_group() helper macro · Rasmus Villemoes <linux@rasmusvillemoes.dk> · 2021-07-28
Re: [PATCH 04/64] stddef: Introduce struct_group() helper macro · Kees Cook <hidden> · 2021-07-28
Re: [PATCH 04/64] stddef: Introduce struct_group() helper macro · Williams, Dan J <hidden> · 2021-07-30
Re: [PATCH 04/64] stddef: Introduce struct_group() helper macro · Kees Cook <hidden> · 2021-07-31
[PATCH 01/64] media: omap3isp: Extract struct group for memcpy() region · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 01/64] media: omap3isp: Extract struct group for memcpy() region · "Gustavo A. R. Silva" <gustavoars@kernel.org> · 2021-07-28
Re: [PATCH 01/64] media: omap3isp: Extract struct group for memcpy() region · Kees Cook <hidden> · 2021-07-28
Re: [PATCH 01/64] media: omap3isp: Extract struct group for memcpy() region · David Sterba <hidden> · 2021-07-28
Re: [PATCH 01/64] media: omap3isp: Extract struct group for memcpy() region · Dan Carpenter <hidden> · 2021-07-28
Re: [PATCH 01/64] media: omap3isp: Extract struct group for memcpy() region · Bart Van Assche <bvanassche@acm.org> · 2021-07-28
Re: [PATCH 01/64] media: omap3isp: Extract struct group for memcpy() region · David Sterba <hidden> · 2021-07-28
Re: [PATCH 01/64] media: omap3isp: Extract struct group for memcpy() region · Greg Kroah-Hartman <gregkh@linuxfoundation.org> · 2021-07-29
Re: [PATCH 01/64] media: omap3isp: Extract struct group for memcpy() region · Dan Carpenter <hidden> · 2021-07-29
Re: [PATCH 01/64] media: omap3isp: Extract struct group for memcpy() region · Kees Cook <hidden> · 2021-07-30
Re: [PATCH 01/64] media: omap3isp: Extract struct group for memcpy() region · David Sterba <hidden> · 2021-07-30
Re: [PATCH 01/64] media: omap3isp: Extract struct group for memcpy() region · Dan Carpenter <hidden> · 2021-07-30
Re: [PATCH 01/64] media: omap3isp: Extract struct group for memcpy() region · Kees Cook <hidden> · 2021-07-30
Re: [PATCH 01/64] media: omap3isp: Extract struct group for memcpy() region · Nick Desaulniers <hidden> · 2021-07-30
Re: [PATCH 01/64] media: omap3isp: Extract struct group for memcpy() region · Kees Cook <hidden> · 2021-07-30
[PATCH 64/64] fortify: Add run-time WARN for cross-field memcpy() · Kees Cook <hidden> · 2021-07-27
[PATCH 47/64] btrfs: Use memset_after() to clear end of struct · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 47/64] btrfs: Use memset_after() to clear end of struct · David Sterba <hidden> · 2021-07-28
Re: [PATCH 47/64] btrfs: Use memset_after() to clear end of struct · Kees Cook <hidden> · 2021-07-28
Re: [PATCH 47/64] btrfs: Use memset_after() to clear end of struct · David Sterba <hidden> · 2021-07-29
Re: [PATCH 47/64] btrfs: Use memset_after() to clear end of struct · Kees Cook <hidden> · 2021-07-31
Re: [PATCH 47/64] btrfs: Use memset_after() to clear end of struct · David Sterba <hidden> · 2021-08-09
[PATCH 40/64] net: 802: Use memset_after() to clear struct fields · Kees Cook <hidden> · 2021-07-27
[PATCH 16/64] thermal: intel: int340x_thermal: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
[PATCH 55/64] RDMA/mlx5: Use struct_group() to zero struct mlx5_ib_mr · Kees Cook <hidden> · 2021-07-27
[PATCH 17/64] iommu/amd: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
[PATCH 42/64] net: qede: Use memset_after() for counters · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 42/64] net: qede: Use memset_after() for counters · Kees Cook <hidden> · 2021-07-31
[PATCH 63/64] iwlwifi: dbg_ini: Split memcpy() to avoid multi-field write · Kees Cook <hidden> · 2021-07-27
[PATCH 41/64] net: dccp: Use memset_after() for TP zeroing · Kees Cook <hidden> · 2021-07-27
[PATCH 43/64] ath11k: Use memset_after() for clearing queue descriptors · Kees Cook <hidden> · 2021-07-27
[PATCH 38/64] xfrm: Use memset_after() to clear padding · Kees Cook <hidden> · 2021-07-27
[PATCH 44/64] iw_cxgb4: Use memset_after() for cpl_t5_pass_accept_rpl · Kees Cook <hidden> · 2021-07-27
[PATCH 53/64] HID: roccat: Use struct_group() to zero kone_mouse_event · Kees Cook <hidden> · 2021-07-27
[PATCH 39/64] mac80211: Use memset_after() to clear tx status · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 39/64] mac80211: Use memset_after() to clear tx status · Kees Cook <hidden> · 2021-07-31
Re: [PATCH 39/64] mac80211: Use memset_after() to clear tx status · Johannes Berg <johannes@sipsolutions.net> · 2021-08-13
Re: [PATCH 39/64] mac80211: Use memset_after() to clear tx status · Kees Cook <hidden> · 2021-08-13
Re: [PATCH 39/64] mac80211: Use memset_after() to clear tx status · Johannes Berg <johannes@sipsolutions.net> · 2021-08-13
Re: [PATCH 39/64] mac80211: Use memset_after() to clear tx status · Johannes Berg <johannes@sipsolutions.net> · 2021-08-13
[PATCH 19/64] ip: Use struct_group() for memcpy() regions · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 19/64] ip: Use struct_group() for memcpy() regions · Greg Kroah-Hartman <gregkh@linuxfoundation.org> · 2021-07-28
Re: [PATCH 19/64] ip: Use struct_group() for memcpy() regions · Gustavo A. R. Silva <hidden> · 2021-07-28
Re: [PATCH 19/64] ip: Use struct_group() for memcpy() regions · Greg Kroah-Hartman <gregkh@linuxfoundation.org> · 2021-07-28
Re: [PATCH 19/64] ip: Use struct_group() for memcpy() regions · Gustavo A. R. Silva <hidden> · 2021-07-28
Re: [PATCH 19/64] ip: Use struct_group() for memcpy() regions · Greg Kroah-Hartman <gregkh@linuxfoundation.org> · 2021-07-28
Re: [PATCH 19/64] ip: Use struct_group() for memcpy() regions · Gustavo A. R. Silva <hidden> · 2021-07-28
Re: [PATCH 19/64] ip: Use struct_group() for memcpy() regions · Kees Cook <hidden> · 2021-07-28
Re: [PATCH 19/64] ip: Use struct_group() for memcpy() regions · Bart Van Assche <bvanassche@acm.org> · 2021-07-29
[PATCH 54/64] ipv6: Use struct_group() to zero rt6_info · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 54/64] ipv6: Use struct_group() to zero rt6_info · Jakub Kicinski <kuba@kernel.org> · 2021-07-29
Re: [PATCH 54/64] ipv6: Use struct_group() to zero rt6_info · Kees Cook <hidden> · 2021-07-31
[PATCH 50/64] KVM: x86: Use struct_group() to zero decode cache · Kees Cook <hidden> · 2021-07-27
[PATCH 56/64] ethtool: stats: Use struct_group() to clear all stats at once · Kees Cook <hidden> · 2021-07-27
[PATCH 61/64] Makefile: Enable -Warray-bounds · Kees Cook <hidden> · 2021-07-27
[PATCH 57/64] netfilter: conntrack: Use struct_group() to zero struct nf_conn · Kees Cook <hidden> · 2021-07-27
[PATCH 36/64] scsi: ibmvscsi: Avoid multi-field memset() overflow by aiming at srp · Kees Cook <hidden> · 2021-07-27
[PATCH 51/64] tracing: Use struct_group() to zero struct trace_iterator · Kees Cook <hidden> · 2021-07-27
[PATCH 23/64] drm/amd/pm: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 23/64] drm/amd/pm: Use struct_group() for memcpy() region · Alex Deucher <hidden> · 2021-07-30
[PATCH 58/64] powerpc: Split memset() to avoid multi-field overflow · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 58/64] powerpc: Split memset() to avoid multi-field overflow · Michael Ellerman <mpe@ellerman.id.au> · 2021-08-05
[PATCH 33/64] lib: Introduce CONFIG_TEST_MEMCPY · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 33/64] lib: Introduce CONFIG_TEST_MEMCPY · Bart Van Assche <bvanassche@acm.org> · 2021-07-27
Re: [PATCH 33/64] lib: Introduce CONFIG_TEST_MEMCPY · Randy Dunlap <hidden> · 2021-07-27
Re: [PATCH 33/64] lib: Introduce CONFIG_TEST_MEMCPY · Kees Cook <hidden> · 2021-07-28
[PATCH 52/64] dm integrity: Use struct_group() to zero struct journal_sector · Kees Cook <hidden> · 2021-07-27
[PATCH 34/64] fortify: Detect struct member overflows in memcpy() at compile-time · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 34/64] fortify: Detect struct member overflows in memcpy() at compile-time · Nick Desaulniers <hidden> · 2021-07-27
Re: [PATCH 34/64] fortify: Detect struct member overflows in memcpy() at compile-time · Kees Cook <hidden> · 2021-07-28
Re: [PATCH 34/64] fortify: Detect struct member overflows in memcpy() at compile-time · Rasmus Villemoes <linux@rasmusvillemoes.dk> · 2021-07-28
Re: [PATCH 34/64] fortify: Detect struct member overflows in memcpy() at compile-time · Kees Cook <hidden> · 2021-07-30
[PATCH 24/64] staging: wlan-ng: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 24/64] staging: wlan-ng: Use struct_group() for memcpy() region · Greg Kroah-Hartman <gregkh@linuxfoundation.org> · 2021-07-28
[PATCH 46/64] IB/mthca: Use memset_after() for clearing mpt_entry · Kees Cook <hidden> · 2021-07-27
[PATCH 49/64] cm4000_cs: Use struct_group() to zero struct cm4000_dev region · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 49/64] cm4000_cs: Use struct_group() to zero struct cm4000_dev region · Greg Kroah-Hartman <gregkh@linuxfoundation.org> · 2021-07-28
[PATCH 60/64] fortify: Work around Clang inlining bugs · Kees Cook <hidden> · 2021-07-27
[PATCH 21/64] cxgb4: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
[PATCH 45/64] intel_th: msu: Use memset_after() for clearing hw header · Kees Cook <hidden> · 2021-07-27
[PATCH 62/64] netlink: Avoid false-positive memcpy() warning · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 62/64] netlink: Avoid false-positive memcpy() warning · Greg Kroah-Hartman <gregkh@linuxfoundation.org> · 2021-07-28
Re: [PATCH 62/64] netlink: Avoid false-positive memcpy() warning · Rasmus Villemoes <linux@rasmusvillemoes.dk> · 2021-07-28
Re: [PATCH 62/64] netlink: Avoid false-positive memcpy() warning · Kees Cook <hidden> · 2021-07-30
Re: [PATCH 62/64] netlink: Avoid false-positive memcpy() warning · Kees Cook <hidden> · 2021-07-30
[PATCH 20/64] intersil: Use struct_group() for memcpy() region · Kees Cook <hidden> · 2021-07-27
[PATCH 35/64] fortify: Detect struct member overflows in memmove() at compile-time · Kees Cook <hidden> · 2021-07-27
[PATCH 37/64] string.h: Introduce memset_after() for wiping trailing members/padding · Kees Cook <hidden> · 2021-07-27
[PATCH 48/64] drbd: Use struct_group() to zero algs · Kees Cook <hidden> · 2021-07-27
Re: [PATCH 48/64] drbd: Use struct_group() to zero algs · Bart Van Assche <bvanassche@acm.org> · 2021-07-28
Re: [PATCH 48/64] drbd: Use struct_group() to zero algs · Kees Cook <hidden> · 2021-07-30
Re: [PATCH 48/64] drbd: Use struct_group() to zero algs · Bart Van Assche <bvanassche@acm.org> · 2021-07-30
Re: [PATCH 48/64] drbd: Use struct_group() to zero algs · Lars Ellenberg <lars.ellenberg@linbit.com> · 2021-07-30
Re: [PATCH 48/64] drbd: Use struct_group() to zero algs · Nick Desaulniers <hidden> · 2021-07-30
[PATCH 59/64] fortify: Detect struct member overflows in memset() at compile-time · Kees Cook <hidden> · 2021-07-27

From: Johannes Berg <johannes@sipsolutions.net>
Date: 2021-08-13 07:42:07
Also in: dri-devel, linux-hardening, linux-kbuild, linux-staging, linux-wireless, lkml, netdev

On Sat, 2021-07-31 at 08:55 -0700, Kees Cook wrote:

quoted

@@ -278,9 +278,7 @@ static void carl9170_tx_release(struct kref *ref)

 	BUILD_BUG_ON(
 	    offsetof(struct ieee80211_tx_info, status.ack_signal) != 20);
 

-	memset(&txinfo->status.ack_signal, 0,
-	       sizeof(struct ieee80211_tx_info) -
-	       offsetof(struct ieee80211_tx_info, status.ack_signal));
+	memset_after(&txinfo->status, 0, rates);

FWIW, I think we should also remove the BUILD_BUG_ON() now in all the
places - that was meant to give people a hint to update if some field
ordering etc. changed, but now that it's "after rates" this is no longer
necessary.

johannes

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