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[198.145.64.163]) by smtp.gmail.com with ESMTPSA id v25sm11904465pfm.202.2021.08.22.00.51.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 22 Aug 2021 00:51:29 -0700 (PDT) From: Kees Cook To: linux-kernel@vger.kernel.org Cc: Kees Cook , Jiri Kosina , Rasmus Villemoes , Daniel Micay , Francis Laniel , Bart Van Assche , David Gow , linux-mm@kvack.org, clang-built-linux@googlegroups.com, linux-hardening@vger.kernel.org Subject: [PATCH for-next 10/25] HID: roccat: Use struct_group() to zero kone_mouse_event Date: Sun, 22 Aug 2021 00:51:07 -0700 Message-Id: <20210822075122.864511-11-keescook@chromium.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210822075122.864511-1-keescook@chromium.org> References: <20210822075122.864511-1-keescook@chromium.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1858; h=from:subject; bh=9rnBN9pp25qHZzpmSwKIY2SR98/yWw6L4NOQkzURsmI=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBhIgH2LkwWtaOSS7Sx/Asb2SpLbNNFUNs3zGDDazyV HncbtwyJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCYSIB9gAKCRCJcvTf3G3AJsM2EA CR/tG8xuXRd6A9sHvtzfnyuKbJ8og8+11J/eZ1XFtBWxwj1ZWtRFM7SK4UsGVDCKbkgmTaWm9L42nz Ykh//OfkNzR8v8LgCX5I4afgYhpr+W2+jd7Vs8OSwt5KL+rh73sPUpznE5xXdoCNQh00RnLs0mgovr ym+zLbmN8A0XXaBmNhADwbonxzCDX3ketGY2WDLcLouoaX60Y2NxAlldabWUypxRLYLHxtOjZ19vR9 IOkqfSzRFVJwesNmzkbstIoEBECpzir6s6uUooa4uvcxTxzqhBDtSI8OkYLHr1mvKeo8cAl9m01ml9 r1hJVcdDio1h1TrNn901c8D1YDuau3G4qKcC3bNRryV/AZppmp9yBYHyXNChFegB12MgSw9yfNrvM1 acs0b5CLpypzUdeByvNdm94UY+Q+2rQ4Mi2imV+7l0rAGdcC+LmY0+zyGGmeYt1cjLP6yDrXqsPCbK TPOzODY5r8mgP7t1mgRy/lpSgH7iLKnv1HelL7GrG4tS/NZSPo2XGfxUF4xR1C13X3s/AImf+Uplnh r8cuoliRDvEXGm0Ly7BS/++cBqIK3M7u1iKh/JS3cPKtsuckyYRiAEQBHUsS+I/Atut8nieCNykJVN PnmWbeC/TjpL+BUjubxZwshG+kHeCYpFTMGXL6y/5csfEcVQbYsml1uPEOGw== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In preparation for FORTIFY_SOURCE performing compile-time and run-time field bounds checking for memset(), avoid intentionally writing across neighboring fields. Add struct_group() to mark region of struct kone_mouse_event that should be initialized to zero. Acked-by: Jiri Kosina Link: https://lore.kernel.org/lkml/nycvar.YFH.7.76.2108201810560.15313@cbobk.fhfr.pm Signed-off-by: Kees Cook --- drivers/hid/hid-roccat-kone.c | 2 +- drivers/hid/hid-roccat-kone.h | 12 +++++++----- 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/hid/hid-roccat-kone.c b/drivers/hid/hid-roccat-kone.c index 1ca64481145e..ea17abc7ad52 100644 --- a/drivers/hid/hid-roccat-kone.c +++ b/drivers/hid/hid-roccat-kone.c @@ -857,7 +857,7 @@ static int kone_raw_event(struct hid_device *hdev, struct hid_report *report, memcpy(&kone->last_mouse_event, event, sizeof(struct kone_mouse_event)); else - memset(&event->tilt, 0, 5); + memset(&event->wipe, 0, sizeof(event->wipe)); kone_keep_values_up_to_date(kone, event); diff --git a/drivers/hid/hid-roccat-kone.h b/drivers/hid/hid-roccat-kone.h index 4a1a9cb76b08..65c800e3addc 100644 --- a/drivers/hid/hid-roccat-kone.h +++ b/drivers/hid/hid-roccat-kone.h @@ -152,11 +152,13 @@ struct kone_mouse_event { uint16_t x; uint16_t y; uint8_t wheel; /* up = 1, down = -1 */ - uint8_t tilt; /* right = 1, left = -1 */ - uint8_t unknown; - uint8_t event; - uint8_t value; /* press = 0, release = 1 */ - uint8_t macro_key; /* 0 to 8 */ + struct_group(wipe, + uint8_t tilt; /* right = 1, left = -1 */ + uint8_t unknown; + uint8_t event; + uint8_t value; /* press = 0, release = 1 */ + uint8_t macro_key; /* 0 to 8 */ + ); } __attribute__ ((__packed__)); enum kone_mouse_events { -- 2.30.2