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rtlwifi: rtl8192de: Fully initialize curvecount_val

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In preparation for FORTIFY_SOURCE performing compile-time and run-time
field bounds checking for memcpy(), memmove(), and memset(), avoid
intentionally writing across neighboring array fields.

The size argument to memset() is bytes, but the array element size
of curvecount_val is u32, so "CV_CURVE_CNT * 2" was only 1/4th of the
contents of curvecount_val. Adjust memset() to wipe full buffer size.

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210617171317.3410722-1-keescook@chromium.org
This commit is contained in:
Kees Cook 2021-06-17 10:13:17 -07:00 committed by Kalle Valo
parent 3f26f7665c
commit 0d5e743db4
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c
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@ -2574,7 +2574,7 @@ static void _rtl92d_phy_lc_calibrate_sw(struct ieee80211_hw *hw, bool is2t)
RTPRINT(rtlpriv, FINIT, INIT_IQK,
"path-B / 2.4G LCK\n");
}
memset(&curvecount_val[0], 0, CV_CURVE_CNT * 2);
memset(curvecount_val, 0, sizeof(curvecount_val));
/* Set LC calibration off */
rtl_set_rfreg(hw, (enum radio_path)index, RF_CHNLBW,
0x08000, 0x0);