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| author | Ulrich Drepper <drepper@redhat.com> | 2004-09-20 15:15:23 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2004-09-20 15:15:23 +0000 |
| commit | 703ccc12453bbe0111b758637445386ed834b8ae (patch) | |
| tree | c29a93c1bf4cc9d9dd7d002780d9b3f0228974c6 /elf/dl-load.c | |
| parent | 664e7d93f93d421225a115a433d0dbbc40444daa (diff) | |
| download | glibc-703ccc12453bbe0111b758637445386ed834b8ae.zip glibc-703ccc12453bbe0111b758637445386ed834b8ae.tar.gz glibc-703ccc12453bbe0111b758637445386ed834b8ae.tar.bz2 | |
(_dl_map_object_from_fd): Add caller check.
Diffstat (limited to 'elf/dl-load.c')
| -rw-r--r-- | elf/dl-load.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/elf/dl-load.c b/elf/dl-load.c index fad456f..e4f85a9 100644 --- a/elf/dl-load.c +++ b/elf/dl-load.c @@ -35,6 +35,7 @@ #include <abi-tag.h> #include <dl-osinfo.h> #include <stackinfo.h> +#include <caller.h> #include <dl-dst.h> @@ -1293,7 +1294,10 @@ cannot allocate TLS data structures for initial thread"); size_t s = (uintptr_t) &__stack_prot - p + sizeof (int); __mprotect ((void *) p, s, PROT_READ|PROT_WRITE); - __stack_prot |= PROT_EXEC; + if (__builtin_expect (__check_caller (RETURN_ADDRESS (0), + allow_ldso|allow_libc) == 0, + 0)) + __stack_prot |= PROT_EXEC; __mprotect ((void *) p, s, PROT_READ); } else |