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wifi: ath12k: Fix for out-of bound access error

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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@gmail.com>
Acked-by: Kalle Valo <kvalo@kernel.org>
Link: https://patch.msgid.link/20241105101132.374372-1-karprzy7@gmail.com
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
This commit is contained in:
Karol Przybylski
2024-11-05 11:11:31 +01:00
committed by Jeff Johnson
parent 1053987a6b
commit eb8c053471
1 changed files with 3 additions and 2 deletions
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5
drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c
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@@ -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",