Currently the size of the IMSI pointer is used instead of the size of
the talloc'ed buffer.

This commit changes the call to gsm48_mi_to_string to use the same
value that has been used with talloc_zero_size(). The length is
changed to 17 since that value is used for GSM_IMSI_LENGTH in
openbsc.

Fixes: Coverity CID 1040663
Sponsored-by: On-Waves ehf
---
 src/gb/gprs_bssgp_bss.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/gb/gprs_bssgp_bss.c b/src/gb/gprs_bssgp_bss.c
index 962bf2e..3a9012e 100644
--- a/src/gb/gprs_bssgp_bss.c
+++ b/src/gb/gprs_bssgp_bss.c
@@ -34,6 +34,8 @@

 #include "common_vty.h"

+#define GSM_IMSI_LENGTH 17
+
 uint8_t *bssgp_msgb_tlli_put(struct msgb *msg, uint32_t tlli)
 {
        uint32_t _tlli = htonl(tlli);
@@ -498,8 +500,8 @@ int bssgp_rx_paging(struct bssgp_paging_info *pinfo,
        if (!TLVP_PRESENT(&tp, BSSGP_IE_IMSI))
                goto err_mand_ie;
        if (!pinfo->imsi)
-               pinfo->imsi = talloc_zero_size(pinfo, 16);
-       gsm48_mi_to_string(pinfo->imsi, sizeof(pinfo->imsi),
+               pinfo->imsi = talloc_zero_size(pinfo, GSM_IMSI_LENGTH);
+       gsm48_mi_to_string(pinfo->imsi, GSM_IMSI_LENGTH,
                           TLVP_VAL(&tp, BSSGP_IE_IMSI),
                           TLVP_LEN(&tp, BSSGP_IE_IMSI));

-- 
1.9.1

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