bootloader: verify that loaded image does not overlap bootloader code

Fixes CVE-2018-18558
2018-09-29 17:29:23 +08:00
parent 705d184af2
commit 73d1b5a7a0
4 changed files with 89 additions and 8 deletions
@@ -35,7 +35,6 @@ SECTIONS
  .iram_loader.text :
  {
    . = ALIGN (16);
-    _stext = .;
    _loader_text_start = ABSOLUTE(.);
    *(.stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
     *(.iram1 .iram1.*) /* catch stray IRAM_ATTR */
@@ -59,7 +58,6 @@ SECTIONS
    *(.fini)
    *(.gnu.version)
    _loader_text_end = ABSOLUTE(.);
-    _etext = .;
  } > iram_loader_seg

  .iram.text :