R0dn3yS/android_kernel_xiaomi_sm7250
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diag: Avoid possible out of bound access while sending masks

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Due to mask size wrongly calculated with incorrect range possible
out of bound access is possible. Prevent the possibility by
correcting the range.

Change-Id: I1b8c50411a6fb17f9ca6e90c0646690953f3db0e
Signed-off-by: Manoj Prabhu B <quic_bmanoj@quicinc.com>
This commit is contained in:
Manoj Prabhu B 2021-12-06 17:10:57 +05:30
parent 2959ed5eb8
commit 1e6a34af1e
1 changed files with 1 additions and 1 deletions
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2
drivers/char/diag/diag_masks.c
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@ -1156,7 +1156,7 @@ static int diag_cmd_set_msg_mask(unsigned char *src_buf, int src_len,
mask_size = MAX_SSID_PER_RANGE;
mask->range_tools = MAX_SSID_PER_RANGE;
mask->ssid_last_tools =
mask->ssid_first + mask->range_tools;
mask->ssid_first + mask->range_tools - 1;
}
if (ssid_range.ssid_last > mask->ssid_last_tools) {
pr_debug("diag: Msg SSID range mismatch\n");