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author | Pau Espin Pedrol <pespin@sysmocom.de> | 2018-04-17 16:09:22 +0200 |
---|---|---|
committer | Pau Espin Pedrol <pespin@sysmocom.de> | 2018-04-17 16:10:35 +0200 |
commit | 7e300d8741c8dd3e9b6fced12ddc14526a9b4ef3 (patch) | |
tree | 31d6bd7c77aa63ecaf2bd5d775862866089f3c3a /src | |
parent | 7d7ee427b356e1a34361c51a1a3203937dfbeac7 (diff) |
smpp_smsc_conf: Fix heap-use-after-freepespin/fix-smsc-use-after-free
Fixes following error catched by enabling address sanitizer:
==20792==ERROR: AddressSanitizer: heap-use-after-free on address 0x60b000122610 at pc 0x7f9c9c3fe063 bp 0x7ffd2e68f600 sp 0x7ffd2e68edb0
READ of size 11 at 0x60b000122610 thread T0
#0 0x7f9c9c3fe062 (/usr/lib/x86_64-linux-gnu/libasan.so.3+0x3c062)
#1 0x7f9c9beb8ee4 in talloc_strdup (/usr/lib/x86_64-linux-gnu/libtalloc.so.2+0x6ee4)
#2 0x56096a7cf75b in smpp_smsc_conf src/libmsc/smpp_smsc.c:983
#3 0x56096a7cf9df in smpp_smsc_start src/libmsc/smpp_smsc.c:1015
#4 0x56096a7d4935 in smpp_openbsc_start src/libmsc/smpp_openbsc.c:785
#5 0x56096a755ad0 in main src/osmo-msc/msc_main.c:598
#6 0x7f9c9927b2e0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202e0)
#7 0x56096a756979 in _start (/home/jenkins/workspace/osmo-gsm-tester_run-prod/trial-805/inst/osmo-msc/bin/osmo-msc+0xf0979)
Related: OS#3181
Change-Id: Iaf0d251c8d2912266a087ada4d20905146e08592
Diffstat (limited to 'src')
-rw-r--r-- | src/libmsc/smpp_smsc.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/libmsc/smpp_smsc.c b/src/libmsc/smpp_smsc.c index 7bbb0a4e7..ea5303c0d 100644 --- a/src/libmsc/smpp_smsc.c +++ b/src/libmsc/smpp_smsc.c @@ -977,6 +977,12 @@ struct smsc *smpp_smsc_alloc_init(void *ctx) /*! \brief Set the SMPP address and port without binding. */ int smpp_smsc_conf(struct smsc *smsc, const char *bind_addr, uint16_t port) { + smsc->listen_port = port; + + /* Avoid use-after-free if bind_addr == smsc->bind_addr */ + if (smsc->bind_addr == bind_addr) + return 0; + talloc_free((void*)smsc->bind_addr); smsc->bind_addr = NULL; if (bind_addr) { @@ -984,7 +990,6 @@ int smpp_smsc_conf(struct smsc *smsc, const char *bind_addr, uint16_t port) if (!smsc->bind_addr) return -ENOMEM; } - smsc->listen_port = port; return 0; } |