author: Nicolas Pitre <nicolas.pitre@linaro.org> 2016-07-24 11:30:24 -0400
committer: Greg Ungerer <gerg@linux-m68k.org> 2016-07-28 13:29:11 +1000
commit: af521f92dcf636c59330233a61cb689d0383c291
parent: 467aa1465a7b9f0bd1a23c83bff8c38e3c3e660e
Commit Summary:
Diffstat:
1 file changed, 13 insertions, 6 deletions
diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
index eb747a266537..83e507137112 100644
--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
@@ -894,12 +894,19 @@ static int load_flat_binary(struct linux_binprm *bprm)
return res;
/* Update data segment pointers for all libraries */
- for (i = 0; i < MAX_SHARED_LIBS; i++)
- if (libinfo.lib_list[i].loaded)
- for (j = 0; j < MAX_SHARED_LIBS; j++)
- (-(j+1))[(unsigned long *)(libinfo.lib_list[i].start_data)] =
- (libinfo.lib_list[j].loaded) ?
- libinfo.lib_list[j].start_data : UNLOADED_LIB;
+ for (i = 0; i < MAX_SHARED_LIBS; i++) {
+ if (!libinfo.lib_list[i].loaded)
+ continue;
+ for (j = 0; j < MAX_SHARED_LIBS; j++) {
+ unsigned long val = libinfo.lib_list[j].loaded ?
+ libinfo.lib_list[j].start_data : UNLOADED_LIB;
+ unsigned long __user *p = (unsigned long __user *)
+ libinfo.lib_list[i].start_data;
+ p -= j + 1;
+ if (put_user(val, p))
+ return -EFAULT;
+ }
+ }
install_exec_creds(bprm);