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dexter gerrit-no-reply at lists.osmocom.orgdexter has submitted this change and it was merged. ( https://gerrit.osmocom.org/12550 ) Change subject: gsm29118: fix coverity issues ...................................................................... gsm29118: fix coverity issues The function msgb_sgsap_name_put() assignes the return code of osmo_apn_from_str() directly to len. Len is an uint8_t and the return code an int. If osmo_apn_from_str() returns -1. Len would become 0xFF causing a buffer overrun with msgb_tlv_put. Lets use the proper type to catch the return code and check it before using it as length. Change-Id: Ic0bc5114eee47bdcf2300a6e4b0df473d3d1903a Fixes: CID#190405 Fixes: CID#190401 Related: OS#3615 --- M src/gsm/gsm29118.c 1 file changed, 6 insertions(+), 1 deletion(-) Approvals: Harald Welte: Looks good to me, approved Jenkins Builder: Verified diff --git a/src/gsm/gsm29118.c b/src/gsm/gsm29118.c index ca210fb..56e7473 100644 --- a/src/gsm/gsm29118.c +++ b/src/gsm/gsm29118.c @@ -196,9 +196,14 @@ { uint8_t buf[APN_MAXLEN]; uint8_t len; + int rc; + /* encoding is like DNS names, which is like APN fields */ memset(buf, 0, sizeof(buf)); - len = osmo_apn_from_str(buf, sizeof(buf), name); + rc = osmo_apn_from_str(buf, sizeof(buf), name); + if (rc < 0) + return -1; + len = (uint8_t)rc; /* Note: While the VLR-Name (see 3GPP TS 29.118, chapter 9.4.22) has * a flexible length, the MME-Name has a fixed size of 55 octets. (see -- To view, visit https://gerrit.osmocom.org/12550 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: libosmocore Gerrit-Branch: master Gerrit-MessageType: merged Gerrit-Change-Id: Ic0bc5114eee47bdcf2300a6e4b0df473d3d1903a Gerrit-Change-Number: 12550 Gerrit-PatchSet: 2 Gerrit-Owner: dexter <pmaier at sysmocom.de> Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org> Gerrit-Reviewer: Jenkins Builder (1000002) Gerrit-Reviewer: dexter <pmaier at sysmocom.de> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/gerrit-log/attachments/20190118/2d149c78/attachment.htm>