https://bugs.exim.org/show_bug.cgi?id=2778
--- Comment #1 from chengxianglin <670605832@???> ---
(In reply to chengxianglin from comment #0)
> ==8248==ERROR: AddressSanitizer: heap-buffer-overflow on address
> 0x62d000008400 at pc 0x00000052a0a6 bp 0x7ffd4e81eea0 sp 0x7ffd4e81ee98
> READ of size 1 at 0x62d000008400 thread T0
> #0 0x52a0a5 in pchars /pcre/pcretest.c:2045:7
> #1 0x52b04a in callout /pcre/pcretest.c:2272:9
> #2 0x5b17e1 in internal_dfa_exec
> /pcre-CVE-2017-7186/pcre_dfa_exec.c:3080:20
> #3 0x58d425 in pcre_dfa_exec /pcre/pcre_dfa_exec.c:3618:8
> #4 0x522479 in main /pcre/pcretest.c:5214:9
> #5 0x7f40690b482f in __libc_start_main
> /build/glibc-LK5gWL/glibc-2.23/csu/../csu/libc-start.c:291
> #6 0x419c88 in _start (/pcre-CVE-2017-7186/pcretest+0x419c88)
>
> 0x62d000008400 is located 0 bytes to the right of 32768-byte region
> [0x62d000000400,0x62d000008400)
> allocated by thread T0 here:
> #0 0x4d2718 in realloc
> /fuzzer/build/llvm_tools/llvm-4.0.0.src/projects/compiler-rt/lib/asan/
> asan_malloc_linux.cc:79
> #1 0x51b762 in main /pcre/pcretest.c:4593:31
> #2 0x7f40690b482f in __libc_start_main
> /build/glibc-LK5gWL/glibc-2.23/csu/../csu/libc-start.c:291
>
> SUMMARY: AddressSanitizer: heap-buffer-overflow
> /pcre-CVE-2017-7186/pcretest.c:2045:7 in pchars
> Shadow bytes around the buggy address:
> 0x0c5a7fff9030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0x0c5a7fff9040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0x0c5a7fff9050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0x0c5a7fff9060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0x0c5a7fff9070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> =>0x0c5a7fff9080:[fa]fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
> 0x0c5a7fff9090: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
> 0x0c5a7fff90a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
> 0x0c5a7fff90b0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
> 0x0c5a7fff90c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
> 0x0c5a7fff90d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
> fa==8248==ERROR: AddressSanitizer: heap-buffer-overflow on address
> 0x62d000008400 at pc 0x00000052a0a6 bp 0x7ffd4e81eea0 sp 0x7ffd4e81ee98
> READ of size 1 at 0x62d000008400 thread T0
> #0 0x52a0a5 in pchars /pcre/pcretest.c:2045:7
> #1 0x52b04a in callout /pcr/pcretest.c:2272:9
> #2 0x5b17e1 in internal_dfa_exec
> /pcre-CVE-2017-7186/pcre_dfa_exec.c:3080:20
> #3 0x58d425 in pcre_dfa_exec /pcre/pcre_dfa_exec.c:3618:8
> #4 0x522479 in main /pcre/pcretest.c:5214:9
> #5 0x7f40690b482f in __libc_start_main
> /build/glibc-LK5gWL/glibc-2.23/csu/../csu/libc-start.c:291
> #6 0x419c88 in _start (/pcre/pcretest+0x419c88)
>
> 0x62d000008400 is located 0 bytes to the right of 32768-byte region
> [0x62d000000400,0x62d000008400)
> allocated by thread T0 here:
> #0 0x4d2718 in realloc
> /fuzzer/build/llvm_tools/llvm-4.0.0.src/projects/compiler-rt/lib/asan/
> asan_malloc_linux.cc:79
> #1 0x51b762 in main /pcre/pcretest.c:4593:31
> #2 0x7f40690b482f in __libc_start_main
> /build/glibc-LK5gWL/glibc-2.23/csu/../csu/libc-start.c:291
>
> SUMMARY: AddressSanitizer: heap-buffer-overflow
> /pcre-CVE-2017-7186/pcretest.c:2045:7 in pchars
> Shadow bytes around the buggy address:
> 0x0c5a7fff9030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0x0c5a7fff9040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0x0c5a7fff9050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0x0c5a7fff9060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0x0c5a7fff9070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> =>0x0c5a7fff9080:[fa]fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
> 0x0c5a7fff9090: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
> 0x0c5a7fff90a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
> 0x0c5a7fff90b0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
> 0x0c5a7fff90c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
> 0x0c5a7fff90d0: 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
> Global redzone: f9
> Global init order: f6
> Poisoned by user: f7
> Container overflow: fc
> Array cookie: ac
> Intra object redzone: bb
> ASan internal: fe
> Left alloca redzone: ca
> Right alloca redzone: cb
> ==8248==ABORTING
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