Harald Welte has submitted this change and it was merged.
Change subject: libmsc: gsm340_gen_oa_sub() may return negative value
......................................................................
libmsc: gsm340_gen_oa_sub() may return negative value
gsm340_gen_oa() returns a negative value if the output buffer that the
caller passes is too small, so we have to check the return value of this
function.
Fixes: CID 174178
Fixes: CID 174179
Change-Id: I47215d7d89771730a7f84efa8aeeb187a0911fdb
---
M openbsc/src/libmsc/gsm_04_11.c
1 file changed, 9 insertions(+), 2 deletions(-)
Approvals:
Harald Welte: Looks good to me, approved
Jenkins Builder: Verified
diff --git a/openbsc/src/libmsc/gsm_04_11.c b/openbsc/src/libmsc/gsm_04_11.c
index 73e0f55..8b4ffce 100644
--- a/openbsc/src/libmsc/gsm_04_11.c
+++ b/openbsc/src/libmsc/gsm_04_11.c
@@ -213,9 +213,9 @@
{
uint8_t *smsp;
uint8_t oa[12]; /* max len per 03.40 */
- uint8_t oa_len = 0;
uint8_t octet_len;
unsigned int old_msg_len = msg->len;
+ int oa_len;
/* generate first octet with masked bits */
smsp = msgb_put(msg, 1);
@@ -233,6 +233,9 @@
/* generate originator address */
oa_len = gsm340_gen_oa_sub(oa, sizeof(oa), &sms->src);
+ if (oa_len < 0)
+ return -ENOSPC;
+
smsp = msgb_put(msg, oa_len);
memcpy(smsp, oa, oa_len);
@@ -282,9 +285,9 @@
struct gsm_sms *sms)
{
unsigned int old_msg_len = msg->len;
- uint8_t oa_len = 0;
uint8_t oa[12]; /* max len per 03.40 */
uint8_t *smsp;
+ int oa_len;
/* generate first octet with masked bits */
smsp = msgb_put(msg, 1);
@@ -296,8 +299,12 @@
/* TP-MR (message reference) */
smsp = msgb_put(msg, 1);
*smsp = sms->msg_ref;
+
/* generate recipient address */
oa_len = gsm340_gen_oa_sub(oa, sizeof(oa), &sms->dst);
+ if (oa_len < 0)
+ return -ENOSPC;
+
smsp = msgb_put(msg, oa_len);
memcpy(smsp, oa, oa_len);
--
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Gerrit-MessageType: merged
Gerrit-Change-Id: I47215d7d89771730a7f84efa8aeeb187a0911fdb
Gerrit-PatchSet: 1
Gerrit-Project: openbsc
Gerrit-Branch: master
Gerrit-Owner: Pablo Neira Ayuso <pa...@gnumonks.org>
Gerrit-Reviewer: Harald Welte <lafo...@gnumonks.org>
Gerrit-Reviewer: Jenkins Builder
