diff options
Diffstat (limited to 'poky/meta/recipes-devtools/binutils/binutils/CVE-2018-7568.patch')
| -rw-r--r-- | poky/meta/recipes-devtools/binutils/binutils/CVE-2018-7568.patch | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/poky/meta/recipes-devtools/binutils/binutils/CVE-2018-7568.patch b/poky/meta/recipes-devtools/binutils/binutils/CVE-2018-7568.patch new file mode 100644 index 000000000..815b32c30 --- /dev/null +++ b/poky/meta/recipes-devtools/binutils/binutils/CVE-2018-7568.patch @@ -0,0 +1,85 @@ +From eef104664efb52965d85a28bc3fc7c77e52e48e2 Mon Sep 17 00:00:00 2001 +From: Nick Clifton <nickc@redhat.com> +Date: Wed, 28 Feb 2018 10:13:54 +0000 +Subject: [PATCH] Fix potential integer overflow when reading corrupt dwarf1 + debug information. + + PR 22894 + * dwarf1.c (parse_die): Check the length of form blocks before + advancing the data pointer. + +Upstream-Status: Backport +Affects: Binutils <= 2.30 +CVE: CVE-2018-7568 +Signed-off-by: Armin Kuster <akuster@mvista.com> + +--- + bfd/ChangeLog | 6 ++++++ + bfd/dwarf1.c | 17 +++++++++++++++-- + 2 files changed, 21 insertions(+), 2 deletions(-) + +Index: git/bfd/dwarf1.c +=================================================================== +--- git.orig/bfd/dwarf1.c ++++ git/bfd/dwarf1.c +@@ -213,6 +213,7 @@ parse_die (bfd * abfd, + /* Then the attributes. */ + while (xptr + 2 <= aDiePtrEnd) + { ++ unsigned int block_len; + unsigned short attr; + + /* Parse the attribute based on its form. This section +@@ -255,12 +256,24 @@ parse_die (bfd * abfd, + break; + case FORM_BLOCK2: + if (xptr + 2 <= aDiePtrEnd) +- xptr += bfd_get_16 (abfd, xptr); ++ { ++ block_len = bfd_get_16 (abfd, xptr); ++ if (xptr + block_len > aDiePtrEnd ++ || xptr + block_len < xptr) ++ return FALSE; ++ xptr += block_len; ++ } + xptr += 2; + break; + case FORM_BLOCK4: + if (xptr + 4 <= aDiePtrEnd) +- xptr += bfd_get_32 (abfd, xptr); ++ { ++ block_len = bfd_get_32 (abfd, xptr); ++ if (xptr + block_len > aDiePtrEnd ++ || xptr + block_len < xptr) ++ return FALSE; ++ xptr += block_len; ++ } + xptr += 4; + break; + case FORM_STRING: +Index: git/bfd/ChangeLog +=================================================================== +--- git.orig/bfd/ChangeLog ++++ git/bfd/ChangeLog +@@ -4,7 +4,11 @@ + * coffgen.c (coff_pointerize_aux): Ensure auxent tagndx is in + range before converting to a symbol table pointer. + +-2018-02-28 Alan Modra <amodra@gmail.com> ++2018-02-28 Nick Clifton <nickc@redhat.com> ++ ++ PR 22894 ++ * dwarf1.c (parse_die): Check the length of form blocks before ++ advancing the data pointer. + + PR 22895 + PR 22893 +@@ -14,6 +18,8 @@ + size is invalid. + (read_attribute_value): Adjust invocations of read_n_bytes. + ++2018-02-28 Alan Modra <amodra@gmail.com> ++ + PR 22887 + * aoutx.h (swap_std_reloc_in): Correct r_index bound check. + |
