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-rw-r--r--fs/binfmt_elf.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 6466153f2bf0..89536811d8f8 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -51,6 +51,11 @@
#define user_siginfo_t siginfo_t
#endif
+/* That's for binfmt_elf_fdpic to deal with */
+#ifndef elf_check_fdpic
+#define elf_check_fdpic(ex) false
+#endif
+
static int load_elf_binary(struct linux_binprm *bprm);
static unsigned long elf_map(struct file *, unsigned long, struct elf_phdr *,
int, int, unsigned long);
@@ -541,7 +546,8 @@ static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex,
if (interp_elf_ex->e_type != ET_EXEC &&
interp_elf_ex->e_type != ET_DYN)
goto out;
- if (!elf_check_arch(interp_elf_ex))
+ if (!elf_check_arch(interp_elf_ex) ||
+ elf_check_fdpic(interp_elf_ex))
goto out;
if (!interpreter->f_op->mmap)
goto out;
@@ -717,6 +723,8 @@ static int load_elf_binary(struct linux_binprm *bprm)
goto out;
if (!elf_check_arch(&loc->elf_ex))
goto out;
+ if (elf_check_fdpic(&loc->elf_ex))
+ goto out;
if (!bprm->file->f_op->mmap)
goto out;
@@ -816,7 +824,8 @@ static int load_elf_binary(struct linux_binprm *bprm)
if (memcmp(loc->interp_elf_ex.e_ident, ELFMAG, SELFMAG) != 0)
goto out_free_dentry;
/* Verify the interpreter has a valid arch */
- if (!elf_check_arch(&loc->interp_elf_ex))
+ if (!elf_check_arch(&loc->interp_elf_ex) ||
+ elf_check_fdpic(&loc->interp_elf_ex))
goto out_free_dentry;
/* Load the interpreter program headers */
@@ -1188,6 +1197,8 @@ static int load_elf_library(struct file *file)
if (elf_ex.e_type != ET_EXEC || elf_ex.e_phnum > 2 ||
!elf_check_arch(&elf_ex) || !file->f_op->mmap)
goto out;
+ if (elf_check_fdpic(&elf_ex))
+ goto out;
/* Now read in all of the header information */