lynxis lazus has uploaded this change for review. (
https://gerrit.osmocom.org/c/osmo-sgsn/+/39243?usp=email )
Change subject: gprs_ms_net_cap_gea_mask(): protect against empty MS Network
Capabilities
......................................................................
gprs_ms_net_cap_gea_mask(): protect against empty MS Network Capabilities
When the MS Network Capability is empty, expect to support at least unecnrypted
communications.
This shouldn't be empty at all.
Change-Id: Ieef2e3eeaaadc90c35fff6f20d47bd36aaa4b9e6
---
M src/sgsn/gprs_gmm.c
1 file changed, 4 insertions(+), 0 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-sgsn refs/changes/43/39243/1
diff --git a/src/sgsn/gprs_gmm.c b/src/sgsn/gprs_gmm.c
index 7c1614b..5ed190b 100644
--- a/src/sgsn/gprs_gmm.c
+++ b/src/sgsn/gprs_gmm.c
@@ -1201,6 +1201,10 @@
static uint8_t gprs_ms_net_cap_gea_mask(const uint8_t *ms_net_cap, uint8_t
cap_len)
{
uint8_t mask = (1 << GPRS_ALGO_GEA0);
+
+ if (cap_len == 0)
+ return mask;
+
mask |= (0x80 & ms_net_cap[0]) ? (1 << GPRS_ALGO_GEA1) : 0;
if (cap_len < 2)
--
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Gerrit-MessageType: newchange
Gerrit-Project: osmo-sgsn
Gerrit-Branch: master
Gerrit-Change-Id: Ieef2e3eeaaadc90c35fff6f20d47bd36aaa4b9e6
Gerrit-Change-Number: 39243
Gerrit-PatchSet: 1
Gerrit-Owner: lynxis lazus <[email protected]>
