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vfs: Commit to never having exectuables on proc and sysfs.
[firefly-linux-kernel-4.4.55.git]
/
kernel
/
sys.c
diff --git
a/kernel/sys.c
b/kernel/sys.c
index 259fda25eb6bac6dcbcfe788590a14ebb63e87f2..fa2f2f671a5cadb271367b13f8b119a21c8bf6b7 100644
(file)
--- a/
kernel/sys.c
+++ b/
kernel/sys.c
@@
-1668,8
+1668,7
@@
static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd)
* overall picture.
*/
err = -EACCES;
- if (!S_ISREG(inode->i_mode) ||
- exe.file->f_path.mnt->mnt_flags & MNT_NOEXEC)
+ if (!S_ISREG(inode->i_mode) || path_noexec(&exe.file->f_path))
goto exit;
err = inode_permission(inode, MAY_EXEC);