Fix crash when ASN1_STRING_to_UTF8() fails - #21017
Closed
ndossche wants to merge 1 commit into
Closed
Conversation
Copy link
Copy Markdown
Member
Sorry, something went wrong.
This function returns -1 on failure. Not checking this causes a segfault
if `cert_name` is still NULL, i.e. if the failure happens on the first
iteration. If the failure happens on the second iteration, we get a
use-after-free.
NULL deref example:
```
==189347==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7f961f6f379d bp 0x7ffdc44afed0 sp 0x7ffdc44af658 T0)
==189347==The signal is caused by a READ memory access.
==189347==Hint: address points to the zero page.
#0 0x7f961f6f379d (/lib/x86_64-linux-gnu/libc.so.6+0x18b79d) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e)
#1 0x7f9620217826 in strlen ../../../../src/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:389
#2 0x560faa92d119 in php_openssl_matches_san_list /work/php-src/ext/openssl/xp_ssl.c:478
#3 0x560faa92e912 in php_openssl_apply_peer_verification_policy /work/php-src/ext/openssl/xp_ssl.c:636
#4 0x560faa93565b in php_openssl_enable_crypto /work/php-src/ext/openssl/xp_ssl.c:1893
#5 0x560faa939c86 in php_openssl_sockop_set_option /work/php-src/ext/openssl/xp_ssl.c:2516
#6 0x560fab74c610 in _php_stream_set_option /work/php-src/main/streams/streams.c:1466
#7 0x560fab7557c1 in php_stream_xport_crypto_enable /work/php-src/main/streams/transports.c:387
#8 0x560faa939f29 in php_openssl_sockop_set_option /work/php-src/ext/openssl/xp_ssl.c:2541
#9 0x560fab74c610 in _php_stream_set_option /work/php-src/main/streams/streams.c:1466
#10 0x560fab754655 in php_stream_xport_connect /work/php-src/main/streams/transports.c:248
#11 0x560fab75365d in _php_stream_xport_create /work/php-src/main/streams/transports.c:145
#12 0x560fab54d725 in zif_stream_socket_client /work/php-src/ext/standard/streamsfuncs.c:158
#13 0x560fab6b7ed2 in zend_test_execute_internal /work/php-src/ext/zend_test/observer.c:306
#14 0x560fab9e024a in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER /work/php-src/Zend/zend_vm_execute.h:2154
#15 0x560fabb40995 in execute_ex /work/php-src/Zend/zend_vm_execute.h:116519
#16 0x560fabb558b0 in zend_execute /work/php-src/Zend/zend_vm_execute.h:121962
#17 0x560fabcba0ab in zend_execute_script /work/php-src/Zend/zend.c:1980
#18 0x560fab6ec8bb in php_execute_script_ex /work/php-src/main/main.c:2645
#19 0x560fab6ecccb in php_execute_script /work/php-src/main/main.c:2685
#20 0x560fabcbfc16 in do_cli /work/php-src/sapi/cli/php_cli.c:951
#21 0x560fabcc21e3 in main /work/php-src/sapi/cli/php_cli.c:1362
#22 0x7f961f5921c9 (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e)
#23 0x7f961f59228a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e)
#24 0x560faa809b34 in _start (/work/php-src/build-dbg-asan/sapi/cli/php+0x609b34) (BuildId: aa149f943514fff0c491e1f199e30fed0e977f7c)
```
UAF example:
```
==190632==ERROR: AddressSanitizer: heap-use-after-free on address 0x5020000690f0 at pc 0x7fc2cdb3596f bp 0x7ffce2ed98d0 sp 0x7ffce2ed9078
READ of size 3 at 0x5020000690f0 thread T0
#0 0x7fc2cdb3596e in strlen ../../../../src/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:391
#1 0x558b6eb2d119 in php_openssl_matches_san_list /work/php-src/ext/openssl/xp_ssl.c:478
#2 0x558b6eb2e912 in php_openssl_apply_peer_verification_policy /work/php-src/ext/openssl/xp_ssl.c:636
#3 0x558b6eb3565b in php_openssl_enable_crypto /work/php-src/ext/openssl/xp_ssl.c:1893
#4 0x558b6eb39c86 in php_openssl_sockop_set_option /work/php-src/ext/openssl/xp_ssl.c:2516
#5 0x558b6f94c610 in _php_stream_set_option /work/php-src/main/streams/streams.c:1466
#6 0x558b6f9557c1 in php_stream_xport_crypto_enable /work/php-src/main/streams/transports.c:387
#7 0x558b6eb39f29 in php_openssl_sockop_set_option /work/php-src/ext/openssl/xp_ssl.c:2541
#8 0x558b6f94c610 in _php_stream_set_option /work/php-src/main/streams/streams.c:1466
#9 0x558b6f954655 in php_stream_xport_connect /work/php-src/main/streams/transports.c:248
#10 0x558b6f95365d in _php_stream_xport_create /work/php-src/main/streams/transports.c:145
#11 0x558b6f74d725 in zif_stream_socket_client /work/php-src/ext/standard/streamsfuncs.c:158
#12 0x558b6f8b7ed2 in zend_test_execute_internal /work/php-src/ext/zend_test/observer.c:306
#13 0x558b6fbe024a in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER /work/php-src/Zend/zend_vm_execute.h:2154
#14 0x558b6fd40995 in execute_ex /work/php-src/Zend/zend_vm_execute.h:116519
#15 0x558b6fd558b0 in zend_execute /work/php-src/Zend/zend_vm_execute.h:121962
#16 0x558b6feba0ab in zend_execute_script /work/php-src/Zend/zend.c:1980
#17 0x558b6f8ec8bb in php_execute_script_ex /work/php-src/main/main.c:2645
#18 0x558b6f8ecccb in php_execute_script /work/php-src/main/main.c:2685
#19 0x558b6febfc16 in do_cli /work/php-src/sapi/cli/php_cli.c:951
#20 0x558b6fec21e3 in main /work/php-src/sapi/cli/php_cli.c:1362
#21 0x7fc2cceb01c9 (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e)
#22 0x7fc2cceb028a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e)
#23 0x558b6ea09b34 in _start (/work/php-src/build-dbg-asan/sapi/cli/php+0x609b34) (BuildId: aa149f943514fff0c491e1f199e30fed0e977f7c)
0x5020000690f0 is located 0 bytes inside of 9-byte region [0x5020000690f0,0x5020000690f9)
freed by thread T0 here:
#0 0x7fc2cdbb44d8 in free ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:52
#1 0x558b6eb2d2fa in php_openssl_matches_san_list /work/php-src/ext/openssl/xp_ssl.c:496
#2 0x558b6eb2e912 in php_openssl_apply_peer_verification_policy /work/php-src/ext/openssl/xp_ssl.c:636
#3 0x558b6eb3565b in php_openssl_enable_crypto /work/php-src/ext/openssl/xp_ssl.c:1893
#4 0x558b6eb39c86 in php_openssl_sockop_set_option /work/php-src/ext/openssl/xp_ssl.c:2516
#5 0x558b6f94c610 in _php_stream_set_option /work/php-src/main/streams/streams.c:1466
#6 0x558b6f9557c1 in php_stream_xport_crypto_enable /work/php-src/main/streams/transports.c:387
#7 0x558b6eb39f29 in php_openssl_sockop_set_option /work/php-src/ext/openssl/xp_ssl.c:2541
#8 0x558b6f94c610 in _php_stream_set_option /work/php-src/main/streams/streams.c:1466
#9 0x558b6f954655 in php_stream_xport_connect /work/php-src/main/streams/transports.c:248
#10 0x558b6f95365d in _php_stream_xport_create /work/php-src/main/streams/transports.c:145
#11 0x558b6f74d725 in zif_stream_socket_client /work/php-src/ext/standard/streamsfuncs.c:158
#12 0x558b6f8b7ed2 in zend_test_execute_internal /work/php-src/ext/zend_test/observer.c:306
#13 0x558b6fbe024a in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER /work/php-src/Zend/zend_vm_execute.h:2154
#14 0x558b6fd40995 in execute_ex /work/php-src/Zend/zend_vm_execute.h:116519
#15 0x558b6fd558b0 in zend_execute /work/php-src/Zend/zend_vm_execute.h:121962
#16 0x558b6feba0ab in zend_execute_script /work/php-src/Zend/zend.c:1980
#17 0x558b6f8ec8bb in php_execute_script_ex /work/php-src/main/main.c:2645
#18 0x558b6f8ecccb in php_execute_script /work/php-src/main/main.c:2685
#19 0x558b6febfc16 in do_cli /work/php-src/sapi/cli/php_cli.c:951
#20 0x558b6fec21e3 in main /work/php-src/sapi/cli/php_cli.c:1362
#21 0x7fc2cceb01c9 (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e)
#22 0x7fc2cceb028a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e)
#23 0x558b6ea09b34 in _start (/work/php-src/build-dbg-asan/sapi/cli/php+0x609b34) (BuildId: aa149f943514fff0c491e1f199e30fed0e977f7c)
previously allocated by thread T0 here:
#0 0x7fc2cdbb59c7 in malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69
#1 0x7fc2cd2faeab in ASN1_mbstring_ncopy (/lib/x86_64-linux-gnu/libcrypto.so.3+0xcceab) (BuildId: 0698e1ff610cb3c6993dccbd82c1281b1b4c5ade)
#2 0x7fc2cd2fb2e5 in ASN1_mbstring_copy (/lib/x86_64-linux-gnu/libcrypto.so.3+0xcd2e5) (BuildId: 0698e1ff610cb3c6993dccbd82c1281b1b4c5ade)
#3 0x7fc2cd2fe2a5 in ASN1_STRING_to_UTF8 (/lib/x86_64-linux-gnu/libcrypto.so.3+0xd02a5) (BuildId: 0698e1ff610cb3c6993dccbd82c1281b1b4c5ade)
#4 0x558b6eb2d0a8 in php_openssl_matches_san_list /work/php-src/ext/openssl/xp_ssl.c:477
#5 0x558b6eb2e912 in php_openssl_apply_peer_verification_policy /work/php-src/ext/openssl/xp_ssl.c:636
#6 0x558b6eb3565b in php_openssl_enable_crypto /work/php-src/ext/openssl/xp_ssl.c:1893
#7 0x558b6eb39c86 in php_openssl_sockop_set_option /work/php-src/ext/openssl/xp_ssl.c:2516
#8 0x558b6f94c610 in _php_stream_set_option /work/php-src/main/streams/streams.c:1466
#9 0x558b6f9557c1 in php_stream_xport_crypto_enable /work/php-src/main/streams/transports.c:387
#10 0x558b6eb39f29 in php_openssl_sockop_set_option /work/php-src/ext/openssl/xp_ssl.c:2541
#11 0x558b6f94c610 in _php_stream_set_option /work/php-src/main/streams/streams.c:1466
#12 0x558b6f954655 in php_stream_xport_connect /work/php-src/main/streams/transports.c:248
#13 0x558b6f95365d in _php_stream_xport_create /work/php-src/main/streams/transports.c:145
#14 0x558b6f74d725 in zif_stream_socket_client /work/php-src/ext/standard/streamsfuncs.c:158
#15 0x558b6f8b7ed2 in zend_test_execute_internal /work/php-src/ext/zend_test/observer.c:306
#16 0x558b6fbe024a in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER /work/php-src/Zend/zend_vm_execute.h:2154
#17 0x558b6fd40995 in execute_ex /work/php-src/Zend/zend_vm_execute.h:116519
#18 0x558b6fd558b0 in zend_execute /work/php-src/Zend/zend_vm_execute.h:121962
#19 0x558b6feba0ab in zend_execute_script /work/php-src/Zend/zend.c:1980
#20 0x558b6f8ec8bb in php_execute_script_ex /work/php-src/main/main.c:2645
#21 0x558b6f8ecccb in php_execute_script /work/php-src/main/main.c:2685
#22 0x558b6febfc16 in do_cli /work/php-src/sapi/cli/php_cli.c:951
#23 0x558b6fec21e3 in main /work/php-src/sapi/cli/php_cli.c:1362
#24 0x7fc2cceb01c9 (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e)
#25 0x7fc2cceb028a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e)
#26 0x558b6ea09b34 in _start (/work/php-src/build-dbg-asan/sapi/cli/php+0x609b34) (BuildId: aa149f943514fff0c491e1f199e30fed0e977f7c)
```
ndossche
commented
Jan 23, 2026
Comment thread
ext/openssl/xp_ssl.c
| if (GET_VER_OPT(_name)) _num = zval_get_long(val) | ||
|
|
||
| /* Used for peer verification in windows */ | ||
| #define PHP_X509_NAME_ENTRY_TO_UTF8(ne, i, out) \ |
Copy link
Copy Markdown
Member
Author
There was a problem hiding this comment.
This appears to be unused, to prevent flagging by analyzers I removed the unused macro
Sorry, something went wrong.
bukka
approved these changes
Apr 3, 2026
bukka
left a comment
Copy link
Copy Markdown
Member
There was a problem hiding this comment.
Hmm not sure if such cert would parse in the first place but better to be safe... I guess that TODO can be removed though unless you can see the case how it could be recreated (in such case, it would be good to add a test..)
Sorry, something went wrong.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
This function returns -1 on failure. Not checking this causes a segfault if cert_name is still NULL, i.e. if the failure happens on the first iteration. If the failure happens on the second iteration, we get a use-after-free.
NULL deref example:
==189347==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7f961f6f379d bp 0x7ffdc44afed0 sp 0x7ffdc44af658 T0) ==189347==The signal is caused by a READ memory access. ==189347==Hint: address points to the zero page. #0 0x7f961f6f379d (/lib/x86_64-linux-gnu/libc.so.6+0x18b79d) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e) #1 0x7f9620217826 in strlen ../../../../src/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:389 #2 0x560faa92d119 in php_openssl_matches_san_list /work/php-src/ext/openssl/xp_ssl.c:478 #3 0x560faa92e912 in php_openssl_apply_peer_verification_policy /work/php-src/ext/openssl/xp_ssl.c:636 #4 0x560faa93565b in php_openssl_enable_crypto /work/php-src/ext/openssl/xp_ssl.c:1893 #5 0x560faa939c86 in php_openssl_sockop_set_option /work/php-src/ext/openssl/xp_ssl.c:2516 #6 0x560fab74c610 in _php_stream_set_option /work/php-src/main/streams/streams.c:1466 #7 0x560fab7557c1 in php_stream_xport_crypto_enable /work/php-src/main/streams/transports.c:387 #8 0x560faa939f29 in php_openssl_sockop_set_option /work/php-src/ext/openssl/xp_ssl.c:2541 #9 0x560fab74c610 in _php_stream_set_option /work/php-src/main/streams/streams.c:1466 #10 0x560fab754655 in php_stream_xport_connect /work/php-src/main/streams/transports.c:248 #11 0x560fab75365d in _php_stream_xport_create /work/php-src/main/streams/transports.c:145 #12 0x560fab54d725 in zif_stream_socket_client /work/php-src/ext/standard/streamsfuncs.c:158 #13 0x560fab6b7ed2 in zend_test_execute_internal /work/php-src/ext/zend_test/observer.c:306 #14 0x560fab9e024a in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER /work/php-src/Zend/zend_vm_execute.h:2154 #15 0x560fabb40995 in execute_ex /work/php-src/Zend/zend_vm_execute.h:116519 #16 0x560fabb558b0 in zend_execute /work/php-src/Zend/zend_vm_execute.h:121962 #17 0x560fabcba0ab in zend_execute_script /work/php-src/Zend/zend.c:1980 #18 0x560fab6ec8bb in php_execute_script_ex /work/php-src/main/main.c:2645 #19 0x560fab6ecccb in php_execute_script /work/php-src/main/main.c:2685 #20 0x560fabcbfc16 in do_cli /work/php-src/sapi/cli/php_cli.c:951 #21 0x560fabcc21e3 in main /work/php-src/sapi/cli/php_cli.c:1362 #22 0x7f961f5921c9 (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e) #23 0x7f961f59228a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e) #24 0x560faa809b34 in _start (/work/php-src/build-dbg-asan/sapi/cli/php+0x609b34) (BuildId: aa149f943514fff0c491e1f199e30fed0e977f7c)UAF example:
==190632==ERROR: AddressSanitizer: heap-use-after-free on address 0x5020000690f0 at pc 0x7fc2cdb3596f bp 0x7ffce2ed98d0 sp 0x7ffce2ed9078 READ of size 3 at 0x5020000690f0 thread T0 #0 0x7fc2cdb3596e in strlen ../../../../src/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:391 #1 0x558b6eb2d119 in php_openssl_matches_san_list /work/php-src/ext/openssl/xp_ssl.c:478 #2 0x558b6eb2e912 in php_openssl_apply_peer_verification_policy /work/php-src/ext/openssl/xp_ssl.c:636 #3 0x558b6eb3565b in php_openssl_enable_crypto /work/php-src/ext/openssl/xp_ssl.c:1893 #4 0x558b6eb39c86 in php_openssl_sockop_set_option /work/php-src/ext/openssl/xp_ssl.c:2516 #5 0x558b6f94c610 in _php_stream_set_option /work/php-src/main/streams/streams.c:1466 #6 0x558b6f9557c1 in php_stream_xport_crypto_enable /work/php-src/main/streams/transports.c:387 #7 0x558b6eb39f29 in php_openssl_sockop_set_option /work/php-src/ext/openssl/xp_ssl.c:2541 #8 0x558b6f94c610 in _php_stream_set_option /work/php-src/main/streams/streams.c:1466 #9 0x558b6f954655 in php_stream_xport_connect /work/php-src/main/streams/transports.c:248 #10 0x558b6f95365d in _php_stream_xport_create /work/php-src/main/streams/transports.c:145 #11 0x558b6f74d725 in zif_stream_socket_client /work/php-src/ext/standard/streamsfuncs.c:158 #12 0x558b6f8b7ed2 in zend_test_execute_internal /work/php-src/ext/zend_test/observer.c:306 #13 0x558b6fbe024a in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER /work/php-src/Zend/zend_vm_execute.h:2154 #14 0x558b6fd40995 in execute_ex /work/php-src/Zend/zend_vm_execute.h:116519 #15 0x558b6fd558b0 in zend_execute /work/php-src/Zend/zend_vm_execute.h:121962 #16 0x558b6feba0ab in zend_execute_script /work/php-src/Zend/zend.c:1980 #17 0x558b6f8ec8bb in php_execute_script_ex /work/php-src/main/main.c:2645 #18 0x558b6f8ecccb in php_execute_script /work/php-src/main/main.c:2685 #19 0x558b6febfc16 in do_cli /work/php-src/sapi/cli/php_cli.c:951 #20 0x558b6fec21e3 in main /work/php-src/sapi/cli/php_cli.c:1362 #21 0x7fc2cceb01c9 (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e) #22 0x7fc2cceb028a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e) #23 0x558b6ea09b34 in _start (/work/php-src/build-dbg-asan/sapi/cli/php+0x609b34) (BuildId: aa149f943514fff0c491e1f199e30fed0e977f7c) 0x5020000690f0 is located 0 bytes inside of 9-byte region [0x5020000690f0,0x5020000690f9) freed by thread T0 here: #0 0x7fc2cdbb44d8 in free ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:52 #1 0x558b6eb2d2fa in php_openssl_matches_san_list /work/php-src/ext/openssl/xp_ssl.c:496 #2 0x558b6eb2e912 in php_openssl_apply_peer_verification_policy /work/php-src/ext/openssl/xp_ssl.c:636 #3 0x558b6eb3565b in php_openssl_enable_crypto /work/php-src/ext/openssl/xp_ssl.c:1893 #4 0x558b6eb39c86 in php_openssl_sockop_set_option /work/php-src/ext/openssl/xp_ssl.c:2516 #5 0x558b6f94c610 in _php_stream_set_option /work/php-src/main/streams/streams.c:1466 #6 0x558b6f9557c1 in php_stream_xport_crypto_enable /work/php-src/main/streams/transports.c:387 #7 0x558b6eb39f29 in php_openssl_sockop_set_option /work/php-src/ext/openssl/xp_ssl.c:2541 #8 0x558b6f94c610 in _php_stream_set_option /work/php-src/main/streams/streams.c:1466 #9 0x558b6f954655 in php_stream_xport_connect /work/php-src/main/streams/transports.c:248 #10 0x558b6f95365d in _php_stream_xport_create /work/php-src/main/streams/transports.c:145 #11 0x558b6f74d725 in zif_stream_socket_client /work/php-src/ext/standard/streamsfuncs.c:158 #12 0x558b6f8b7ed2 in zend_test_execute_internal /work/php-src/ext/zend_test/observer.c:306 #13 0x558b6fbe024a in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER /work/php-src/Zend/zend_vm_execute.h:2154 #14 0x558b6fd40995 in execute_ex /work/php-src/Zend/zend_vm_execute.h:116519 #15 0x558b6fd558b0 in zend_execute /work/php-src/Zend/zend_vm_execute.h:121962 #16 0x558b6feba0ab in zend_execute_script /work/php-src/Zend/zend.c:1980 #17 0x558b6f8ec8bb in php_execute_script_ex /work/php-src/main/main.c:2645 #18 0x558b6f8ecccb in php_execute_script /work/php-src/main/main.c:2685 #19 0x558b6febfc16 in do_cli /work/php-src/sapi/cli/php_cli.c:951 #20 0x558b6fec21e3 in main /work/php-src/sapi/cli/php_cli.c:1362 #21 0x7fc2cceb01c9 (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e) #22 0x7fc2cceb028a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e) #23 0x558b6ea09b34 in _start (/work/php-src/build-dbg-asan/sapi/cli/php+0x609b34) (BuildId: aa149f943514fff0c491e1f199e30fed0e977f7c) previously allocated by thread T0 here: #0 0x7fc2cdbb59c7 in malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69 #1 0x7fc2cd2faeab in ASN1_mbstring_ncopy (/lib/x86_64-linux-gnu/libcrypto.so.3+0xcceab) (BuildId: 0698e1ff610cb3c6993dccbd82c1281b1b4c5ade) #2 0x7fc2cd2fb2e5 in ASN1_mbstring_copy (/lib/x86_64-linux-gnu/libcrypto.so.3+0xcd2e5) (BuildId: 0698e1ff610cb3c6993dccbd82c1281b1b4c5ade) #3 0x7fc2cd2fe2a5 in ASN1_STRING_to_UTF8 (/lib/x86_64-linux-gnu/libcrypto.so.3+0xd02a5) (BuildId: 0698e1ff610cb3c6993dccbd82c1281b1b4c5ade) #4 0x558b6eb2d0a8 in php_openssl_matches_san_list /work/php-src/ext/openssl/xp_ssl.c:477 #5 0x558b6eb2e912 in php_openssl_apply_peer_verification_policy /work/php-src/ext/openssl/xp_ssl.c:636 #6 0x558b6eb3565b in php_openssl_enable_crypto /work/php-src/ext/openssl/xp_ssl.c:1893 #7 0x558b6eb39c86 in php_openssl_sockop_set_option /work/php-src/ext/openssl/xp_ssl.c:2516 #8 0x558b6f94c610 in _php_stream_set_option /work/php-src/main/streams/streams.c:1466 #9 0x558b6f9557c1 in php_stream_xport_crypto_enable /work/php-src/main/streams/transports.c:387 #10 0x558b6eb39f29 in php_openssl_sockop_set_option /work/php-src/ext/openssl/xp_ssl.c:2541 #11 0x558b6f94c610 in _php_stream_set_option /work/php-src/main/streams/streams.c:1466 #12 0x558b6f954655 in php_stream_xport_connect /work/php-src/main/streams/transports.c:248 #13 0x558b6f95365d in _php_stream_xport_create /work/php-src/main/streams/transports.c:145 #14 0x558b6f74d725 in zif_stream_socket_client /work/php-src/ext/standard/streamsfuncs.c:158 #15 0x558b6f8b7ed2 in zend_test_execute_internal /work/php-src/ext/zend_test/observer.c:306 #16 0x558b6fbe024a in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER /work/php-src/Zend/zend_vm_execute.h:2154 #17 0x558b6fd40995 in execute_ex /work/php-src/Zend/zend_vm_execute.h:116519 #18 0x558b6fd558b0 in zend_execute /work/php-src/Zend/zend_vm_execute.h:121962 #19 0x558b6feba0ab in zend_execute_script /work/php-src/Zend/zend.c:1980 #20 0x558b6f8ec8bb in php_execute_script_ex /work/php-src/main/main.c:2645 #21 0x558b6f8ecccb in php_execute_script /work/php-src/main/main.c:2685 #22 0x558b6febfc16 in do_cli /work/php-src/sapi/cli/php_cli.c:951 #23 0x558b6fec21e3 in main /work/php-src/sapi/cli/php_cli.c:1362 #24 0x7fc2cceb01c9 (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e) #25 0x7fc2cceb028a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 274eec488d230825a136fa9c4d85370fed7a0a5e) #26 0x558b6ea09b34 in _start (/work/php-src/build-dbg-asan/sapi/cli/php+0x609b34) (BuildId: aa149f943514fff0c491e1f199e30fed0e977f7c)This was found by a hybrid static-dynamic analyser that looks for inconsistent handling of error checks in bindings.