diff options
Diffstat (limited to 'meta/recipes-devtools/binutils/binutils/CVE-2019-17451.patch')
| -rw-r--r-- | meta/recipes-devtools/binutils/binutils/CVE-2019-17451.patch | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/meta/recipes-devtools/binutils/binutils/CVE-2019-17451.patch b/meta/recipes-devtools/binutils/binutils/CVE-2019-17451.patch new file mode 100644 index 0000000000..1fe05d310e --- /dev/null +++ b/meta/recipes-devtools/binutils/binutils/CVE-2019-17451.patch @@ -0,0 +1,46 @@ +From 0192438051a7e781585647d5581a2a6f62fda362 Mon Sep 17 00:00:00 2001 +From: Alan Modra <amodra@gmail.com> +Date: Wed, 9 Oct 2019 10:47:13 +1030 +Subject: [PATCH] PR25070, SEGV in function _bfd_dwarf2_find_nearest_line + +Selectively backporting fix for bfd/dwarf2.c, but not the ChangeLog +file. There are newer versions of binutils, but none of them contain the +commit fixing CVE-2019-17451, so backport it to master and zeus. + +Upstream-Status: Backport +[https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=336bfbeb1848] +CVE: CVE-2019-17451 +Signed-off-by: Trevor Gamblin <trevor.gamblin@windriver.com> + + +Evil testcase with two debug info sections, with sizes of 2aaaabac4ec1 +and ffffd5555453b140 result in a total size of 1. Reading the first +section of course overflows the buffer and tramples on other memory. + + PR 25070 + * dwarf2.c (_bfd_dwarf2_slurp_debug_info): Catch overflow of + total_size calculation. +--- + bfd/dwarf2.c | 11 ++++++++++- + 1 file changed, 10 insertions(+), 1 deletion(-) + +--- a/bfd/dwarf2.c ++++ b/bfd/dwarf2.c +@@ -4439,7 +4439,16 @@ _bfd_dwarf2_slurp_debug_info (bfd *abfd, + for (total_size = 0; + msec; + msec = find_debug_info (debug_bfd, debug_sections, msec)) +- total_size += msec->size; ++ { ++ /* Catch PR25070 testcase overflowing size calculation here. */ ++ if (total_size + msec->size < total_size ++ || total_size + msec->size < msec->size) ++ { ++ bfd_set_error (bfd_error_no_memory); ++ return FALSE; ++ } ++ total_size += msec->size; ++ } + + stash->info_ptr_memory = (bfd_byte *) bfd_malloc (total_size); + if (stash->info_ptr_memory == NULL) |