From: Karol Przybylski <karprzy7@xxxxxxxxx> [ Upstream commit eb8c0534713865d190856f10bfc97cf0b88475b1 ] Selfgen stats are placed in a buffer using print_array_to_buf_index() function. Array length parameter passed to the function is too big, resulting in possible out-of bound memory error. Decreasing buffer size by one fixes faulty upper bound of passed array. Discovered in coverity scan, CID 1600742 and CID 1600758 Signed-off-by: Karol Przybylski <karprzy7@xxxxxxxxx> Acked-by: Kalle Valo <kvalo@xxxxxxxxxx> Link: https://patch.msgid.link/20241105101132.374372-1-karprzy7@xxxxxxxxx Signed-off-by: Jeff Johnson <quic_jjohnson@xxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c b/drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c index c9980c0193d1d..43ea87e981f42 100644 --- a/drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c +++ b/drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c @@ -1562,7 +1562,8 @@ ath12k_htt_print_tx_selfgen_ac_stats_tlv(const void *tag_buf, u16 tag_len, le32_to_cpu(htt_stats_buf->ac_mu_mimo_ndp)); len += print_array_to_buf_index(buf, len, "ac_mu_mimo_brpollX_tried = ", 1, htt_stats_buf->ac_mu_mimo_brpoll, - ATH12K_HTT_TX_NUM_AC_MUMIMO_USER_STATS, "\n\n"); + ATH12K_HTT_TX_NUM_AC_MUMIMO_USER_STATS - 1, + "\n\n"); stats_req->buf_len = len; } @@ -1590,7 +1591,7 @@ ath12k_htt_print_tx_selfgen_ax_stats_tlv(const void *tag_buf, u16 tag_len, le32_to_cpu(htt_stats_buf->ax_mu_mimo_ndp)); len += print_array_to_buf_index(buf, len, "ax_mu_mimo_brpollX_tried = ", 1, htt_stats_buf->ax_mu_mimo_brpoll, - ATH12K_HTT_TX_NUM_AX_MUMIMO_USER_STATS, "\n"); + ATH12K_HTT_TX_NUM_AX_MUMIMO_USER_STATS - 1, "\n"); len += scnprintf(buf + len, buf_len - len, "ax_basic_trigger = %u\n", le32_to_cpu(htt_stats_buf->ax_basic_trigger)); len += scnprintf(buf + len, buf_len - len, "ax_ulmumimo_total_trigger = %u\n", -- 2.39.5
