diff options
Diffstat (limited to 'meta/recipes-devtools/binutils/binutils/CVE-2017-14934.patch')
| -rw-r--r-- | meta/recipes-devtools/binutils/binutils/CVE-2017-14934.patch | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/meta/recipes-devtools/binutils/binutils/CVE-2017-14934.patch b/meta/recipes-devtools/binutils/binutils/CVE-2017-14934.patch new file mode 100644 index 0000000000..57733f08cf --- /dev/null +++ b/meta/recipes-devtools/binutils/binutils/CVE-2017-14934.patch @@ -0,0 +1,63 @@ +From 19485196044b2521af979f1e5c4a89bfb90fba0b Mon Sep 17 00:00:00 2001 +From: Nick Clifton <nickc@redhat.com> +Date: Wed, 27 Sep 2017 10:42:51 +0100 +Subject: [PATCH] Prevent an infinite loop in the DWARF parsing code when + encountering a CU structure with a small negative size. + + PR 22219 + * dwarf.c (process_debug_info): Add a check for a negative + cu_length field. + +Upstream-Status: Backport +Affects: <= 2.29.1 +CVE: CVE-2017-14934 +Signed-off-by: Armin Kuster <akuster@mvista.com> + +--- + binutils/ChangeLog | 6 ++++++ + binutils/dwarf.c | 11 ++++++++++- + 2 files changed, 16 insertions(+), 1 deletion(-) + +Index: git/binutils/dwarf.c +=================================================================== +--- git.orig/binutils/dwarf.c ++++ git/binutils/dwarf.c +@@ -2547,7 +2547,7 @@ process_debug_info (struct dwarf_section + int level, last_level, saved_level; + dwarf_vma cu_offset; + unsigned int offset_size; +- int initial_length_size; ++ unsigned int initial_length_size; + dwarf_vma signature_high = 0; + dwarf_vma signature_low = 0; + dwarf_vma type_offset = 0; +@@ -2695,6 +2695,15 @@ process_debug_info (struct dwarf_section + num_units = unit; + break; + } ++ else if (compunit.cu_length + initial_length_size < initial_length_size) ++ { ++ warn (_("Debug info is corrupted, length of CU at %s is negative (%s)\n"), ++ dwarf_vmatoa ("x", cu_offset), ++ dwarf_vmatoa ("x", compunit.cu_length)); ++ num_units = unit; ++ break; ++ } ++ + tags = hdrptr; + start += compunit.cu_length + initial_length_size; + +Index: git/binutils/ChangeLog +=================================================================== +--- git.orig/binutils/ChangeLog ++++ git/binutils/ChangeLog +@@ -1,3 +1,9 @@ ++2017-09-27 Nick Clifton <nickc@redhat.com> ++ ++ PR 22219 ++ * dwarf.c (process_debug_info): Add a check for a negative ++ cu_length field. ++ + 2017-11-01 Alan Modra <amodra@gmail.com> + + Apply from master |