[PATCH] D42645: New simple Checker for mmap calls

[David CARLIER via Phabricator via cfe-commits]

devnexen added a comment.

Another example with pcre2, more specifically its JIT engine

  In file included from /home/dcarlier/Contribs/php-src/ext/pcre/pcre2lib/pcre2_jit_compile.c:78:
  In file included from /home/dcarlier/Contribs/php-src/ext/pcre/pcre2lib/sljit/sljitLir.c:261:
  /home/dcarlier/Contribs/php-src/ext/pcre/pcre2lib/sljit/sljitExecAllocator.c:102:11: warning: Both PROT_WRITE and PROT_EXEC flags had been set. It can leads to exploitable memory regions, overwritten with malicious code
          retval = mmap(NULL, size, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANON, -1, 0);
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  In file included from /home/dcarlier/Contribs/php-src/ext/pcre/pcre2lib/pcre2_jit_compile.c:78:
  In file included from /home/dcarlier/Contribs/php-src/ext/pcre/pcre2lib/sljit/sljitLir.c:1737:


Repository:
  rC Clang

https://reviews.llvm.org/D42645