diff options
Diffstat (limited to 'meta/recipes-devtools/binutils/binutils/CVE-2017-9041_2.patch')
| -rw-r--r-- | meta/recipes-devtools/binutils/binutils/CVE-2017-9041_2.patch | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/meta/recipes-devtools/binutils/binutils/CVE-2017-9041_2.patch b/meta/recipes-devtools/binutils/binutils/CVE-2017-9041_2.patch new file mode 100644 index 0000000000..9c3cb8ca25 --- /dev/null +++ b/meta/recipes-devtools/binutils/binutils/CVE-2017-9041_2.patch @@ -0,0 +1,84 @@ +From c4ab9505b53cdc899506ed421fddb7e1f8faf7a3 Mon Sep 17 00:00:00 2001 +From: "Maciej W. Rozycki" <macro@imgtec.com> +Date: Wed, 12 Apr 2017 00:03:41 +0100 +Subject: [PATCH] MIPS/readelf: Simplify GOT[1] data availability check + +Unavailable data is handled gracefully in MIPS GOT processing done by +`print_mips_got_entry', so all that is needed in special GOT[1] handling +is to verify whether data can be retrieved for the purpose of the GNU +marker check done with `byte_get'. Remove the extra error reporting +code then, introduced with commit 75ec1fdbb797 ("Fix runtime seg-fault +in readelf when parsing a corrupt MIPS binary.") in the course of +addressing PR binutils/21344, and defer the error case to regular local +GOT entry processing. + + binutils/ + * readelf.c (process_mips_specific): Remove error reporting from + GOT[1] processing. + +Upstream-Status: Backport +CVE: CVE-2017-9041 +VER: <= 2.28 +Signed-off-by: Armin Kuster <akuster@mvista.com> + +--- + binutils/ChangeLog | 5 +++++ + binutils/readelf.c | 32 ++++++++++++++------------------ + 2 files changed, 19 insertions(+), 18 deletions(-) + +Index: git/binutils/readelf.c +=================================================================== +--- git.orig/binutils/readelf.c ++++ git/binutils/readelf.c +@@ -15013,24 +15013,20 @@ process_mips_specific (FILE * file) + if (ent == (bfd_vma) -1) + goto got_print_fail; + +- if (data) ++ /* Check for the MSB of GOT[1] being set, denoting a GNU object. ++ This entry will be used by some runtime loaders, to store the ++ module pointer. Otherwise this is an ordinary local entry. ++ PR 21344: Check for the entry being fully available before ++ fetching it. */ ++ if (data ++ && data + ent - pltgot + addr_size <= data_end ++ && (byte_get (data + ent - pltgot, addr_size) ++ >> (addr_size * 8 - 1)) != 0) + { +- /* PR 21344 */ +- if (data + ent - pltgot > data_end - addr_size) +- { +- error (_("Invalid got entry - %#lx - overflows GOT table\n"), +- (long) ent); +- goto got_print_fail; +- } +- +- if (byte_get (data + ent - pltgot, addr_size) +- >> (addr_size * 8 - 1) != 0) +- { +- ent = print_mips_got_entry (data, pltgot, ent, data_end); +- printf (_(" Module pointer (GNU extension)\n")); +- if (ent == (bfd_vma) -1) +- goto got_print_fail; +- } ++ ent = print_mips_got_entry (data, pltgot, ent, data_end); ++ printf (_(" Module pointer (GNU extension)\n")); ++ if (ent == (bfd_vma) -1) ++ goto got_print_fail; + } + printf ("\n"); + +Index: git/bfd/ChangeLog +=================================================================== +--- git.orig/bfd/ChangeLog ++++ git/bfd/ChangeLog +@@ -1,4 +1,9 @@ + 2017-04-25 Maciej W. Rozycki <macro@imgtec.com> ++ ++ * readelf.c (process_mips_specific): Remove error reporting from ++ GOT[1] processing. ++ ++2017-04-25 Maciej W. Rozycki <macro@imgtec.com> + + * readelf.c (process_mips_specific): Remove null GOT data check. + |