remove old openvpn net30 Workaround and use topology subnet#9
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gerhard-strauss-jambit wants to merge 3 commits intoSoftEtherVPN:masterfrom
Open
remove old openvpn net30 Workaround and use topology subnet#9gerhard-strauss-jambit wants to merge 3 commits intoSoftEtherVPN:masterfrom
gerhard-strauss-jambit wants to merge 3 commits intoSoftEtherVPN:masterfrom
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miroslavhruz
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this pull request
Nov 19, 2025
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==1505093==ERROR: AddressSanitizer: heap-use-after-free on address 0x607000366b88 at pc 0x7f72afadc34a bp 0x7f72990fa390 sp 0x7f72990fa388
READ of size 4 at 0x607000366b88 thread T22
#0 0x7f72afadc349 in GetCaps /home/ilia/SoftEtherVPN/src/Cedar/Server.c:1861
SoftEtherVPN#1 0x7f72afadc382 in GetCapsInt /home/ilia/SoftEtherVPN/src/Cedar/Server.c:1802
SoftEtherVPN#2 0x7f72afaf72a5 in GetServerCapsInt /home/ilia/SoftEtherVPN/src/Cedar/Server.c:1098
SoftEtherVPN#3 0x7f72afaf7318 in GetServerCapsBool /home/ilia/SoftEtherVPN/src/Cedar/Server.c:1104
SoftEtherVPN#4 0x7f72afaf771e in SiWriteHubCfg /home/ilia/SoftEtherVPN/src/Cedar/Server.c:4887
SoftEtherVPN#5 0x7f72afaf771e in SiWriteHubCfg /home/ilia/SoftEtherVPN/src/Cedar/Server.c:4824
SoftEtherVPN#6 0x7f72afaf7c0b in SiWriteHubs /home/ilia/SoftEtherVPN/src/Cedar/Server.c:5548
SoftEtherVPN#7 0x7f72afaf7c0b in SiWriteHubs /home/ilia/SoftEtherVPN/src/Cedar/Server.c:5515
SoftEtherVPN#8 0x7f72afaf81d6 in SiWriteConfigurationToCfg /home/ilia/SoftEtherVPN/src/Cedar/Server.c:3166
SoftEtherVPN#9 0x7f72afaf86bc in SiWriteConfigurationFile /home/ilia/SoftEtherVPN/src/Cedar/Server.c:6593
SoftEtherVPN#10 0x7f72afaf86bc in SiWriteConfigurationFile /home/ilia/SoftEtherVPN/src/Cedar/Server.c:6569
#11 0x7f72afaf8914 in SiSaverThread /home/ilia/SoftEtherVPN/src/Cedar/Server.c:6561
SoftEtherVPN#12 0x7f72afaf8914 in SiSaverThread /home/ilia/SoftEtherVPN/src/Cedar/Server.c:6547
SoftEtherVPN#13 0x7f72af6e0cfa in ThreadPoolProc /home/ilia/SoftEtherVPN/src/Mayaqua/Kernel.c:872
SoftEtherVPN#14 0x7f72af6e0cfa in ThreadPoolProc /home/ilia/SoftEtherVPN/src/Mayaqua/Kernel.c:827
SoftEtherVPN#15 0x7f72af76eeb4 in UnixDefaultThreadProc /home/ilia/SoftEtherVPN/src/Mayaqua/Unix.c:1604
SoftEtherVPN#16 0x7f72af4ffc56 in start_thread (/lib64/libc.so.6+0x8cc56) (BuildId: 6107835fa7d4725691b2b7f6aaee7abe09f493b2)
SoftEtherVPN#17 0x7f72af585a6f in __clone3 (/lib64/libc.so.6+0x112a6f) (BuildId: 6107835fa7d4725691b2b7f6aaee7abe09f493b2)
0x607000366b88 is located 24 bytes inside of 72-byte region [0x607000366b70,0x607000366bb8)
freed by thread T0 here:
#0 0x7f72afed7fc8 in __interceptor_free.part.0 (/lib64/libasan.so.8+0xd7fc8) (BuildId: 9501248886f79bf1482f3e153f794be742818172)
SoftEtherVPN#1 0x7f72af76ed6f in UnixMemoryFree /home/ilia/SoftEtherVPN/src/Mayaqua/Unix.c:2072
previously allocated by thread T22 here:
#0 0x7f72afed92ff in malloc (/lib64/libasan.so.8+0xd92ff) (BuildId: 9501248886f79bf1482f3e153f794be742818172)
SoftEtherVPN#1 0x7f72af76f35d in UnixMemoryAlloc /home/ilia/SoftEtherVPN/src/Mayaqua/Unix.c:2053
Thread T22 created by T0 here:
#0 0x7f72afe48966 in pthread_create (/lib64/libasan.so.8+0x48966) (BuildId: 9501248886f79bf1482f3e153f794be742818172)
SoftEtherVPN#1 0x7f72af76f713 in UnixInitThread /home/ilia/SoftEtherVPN/src/Mayaqua/Unix.c:1683
SUMMARY: AddressSanitizer: heap-use-after-free /home/ilia/SoftEtherVPN/src/Cedar/Server.c:1861 in GetCaps
Shadow bytes around the buggy address:
0x607000366900: 00 00 00 fa fa fa fa fa 00 00 00 00 00 00 00 00
0x607000366980: 00 fa fa fa fa fa 00 00 00 00 00 00 00 00 00 fa
0x607000366a00: fa fa fa fa 00 00 00 00 00 00 00 00 00 fa fa fa
0x607000366a80: fa fa 00 00 00 00 00 00 00 00 00 fa fa fa fa fa
0x607000366b00: 00 00 00 00 00 00 00 00 00 fa fa fa fa fa fd fd
=>0x607000366b80: fd[fd]fd fd fd fd fd fa fa fa fa fa fd fd fd fd
0x607000366c00: fd fd fd fd fd fa fa fa fa fa fd fd fd fd fd fd
0x607000366c80: fd fd fd fa fa fa fa fa fd fd fd fd fd fd fd fd
0x607000366d00: fd fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x607000366d80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x607000366e00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
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Changes proposed in this pull request:
https://community.openvpn.net/openvpn/wiki/Topology
The Code is from this Pull Request, which is not from me.
SoftEtherVPN/SoftEtherVPN#649
i just did a copy / paste Job