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lynxis lazus gerrit-no-reply at lists.osmocom.orglynxis lazus has uploaded this change for review. ( https://gerrit.osmocom.org/c/libosmocore/+/24650 ) Change subject: gprs_ns2: sgsn: free the NSE if the SIZE PDU is not valid ...................................................................... gprs_ns2: sgsn: free the NSE if the SIZE PDU is not valid The SGSN fsm should be freed when becoming invalid instead of going into the unconfigured state. The unconfigured states should be only used when creating the NSE (on the SGSN side). Change-Id: Ife889091ecba4180a90743deb786767008fe863d --- M src/gb/gprs_ns2_sns.c 1 file changed, 14 insertions(+), 0 deletions(-) git pull ssh://gerrit.osmocom.org:29418/libosmocore refs/changes/50/24650/1 diff --git a/src/gb/gprs_ns2_sns.c b/src/gb/gprs_ns2_sns.c index c2d5a96..78c0e26 100644 --- a/src/gb/gprs_ns2_sns.c +++ b/src/gb/gprs_ns2_sns.c @@ -2242,12 +2242,16 @@ !TLVP_PRES_LEN(tp, NS_IE_MAX_NR_NSVC, 2)) { cause = NS_CAUSE_MISSING_ESSENT_IE; ns2_tx_sns_size_ack(gss->sns_nsvc, &cause); + if (fi->state == GPRS_SNS_ST_UNCONFIGURED) + sns_failed(fi, "Rx Size: Missing Enssential IE"); break; } if (!TLVP_PRES_LEN(tp, NS_IE_IPv4_EP_NR, 2) && !TLVP_PRES_LEN(tp, NS_IE_IPv6_EP_NR, 2)) { cause = NS_CAUSE_MISSING_ESSENT_IE; ns2_tx_sns_size_ack(gss->sns_nsvc, &cause); + if (fi->state == GPRS_SNS_ST_UNCONFIGURED) + sns_failed(fi, "Rx Size: Missing Enssential IE"); break; } if (TLVP_PRES_LEN(tp, NS_IE_IPv4_EP_NR, 2)) @@ -2271,6 +2275,8 @@ else cause = NS_CAUSE_INVAL_NR_IPv6_EP; ns2_tx_sns_size_ack(gss->sns_nsvc, &cause); + if (fi->state == GPRS_SNS_ST_UNCONFIGURED) + sns_failed(fi, "Rx Size: Invalid Nr of IPv4/IPv6 EPs"); break; } /* ensure number of NS-VCs is sufficient for full mesh */ @@ -2281,6 +2287,8 @@ num_remote_eps, num_local_eps * num_remote_eps, gss->num_max_nsvcs); cause = NS_CAUSE_INVAL_NR_NS_VC; ns2_tx_sns_size_ack(gss->sns_nsvc, &cause); + if (fi->state == GPRS_SNS_ST_UNCONFIGURED) + sns_failed(fi, NULL); break; } /* perform state reset, if requested */ @@ -2305,6 +2313,12 @@ } ns2_sns_compute_local_ep_from_binds(fi); } + + if (fi->state == GPRS_SNS_ST_UNCONFIGURED && !(flag & 1)) { + sns_failed(fi, "Rx Size without Reset flag, but NSE is unknown"); + break; + } + /* send SIZE_ACK */ ns2_tx_sns_size_ack(gss->sns_nsvc, NULL); /* only wait for SNS-CONFIG in case of Reset flag */ -- To view, visit https://gerrit.osmocom.org/c/libosmocore/+/24650 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: libosmocore Gerrit-Branch: master Gerrit-Change-Id: Ife889091ecba4180a90743deb786767008fe863d Gerrit-Change-Number: 24650 Gerrit-PatchSet: 1 Gerrit-Owner: lynxis lazus <lynxis at fe80.eu> Gerrit-MessageType: newchange -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/gerrit-log/attachments/20210612/52955c4f/attachment.htm>