diff options
Diffstat (limited to 'meta/recipes-support/libpcre/libpcre2/libpcre2-CVE-2017-7186.patch')
| -rw-r--r-- | meta/recipes-support/libpcre/libpcre2/libpcre2-CVE-2017-7186.patch | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/meta/recipes-support/libpcre/libpcre2/libpcre2-CVE-2017-7186.patch b/meta/recipes-support/libpcre/libpcre2/libpcre2-CVE-2017-7186.patch deleted file mode 100644 index bfa3bfeec9..0000000000 --- a/meta/recipes-support/libpcre/libpcre2/libpcre2-CVE-2017-7186.patch +++ /dev/null @@ -1,96 +0,0 @@ -libpcre2-10.23: Fix CVE-2017-7186 - -A fuzz on libpcre1 through the pcretest utility revealed an invalid read in the -library. For who is interested in a detailed description of the bug, will -follow a feedback from upstream: - -This was a genuine bug in the 32-bit library. Thanks for finding it. The crash -was caused by trying to find a Unicode property for a code value greater than -0x10ffff, the Unicode maximum, when running in non-UTF mode (where character -values can be up to 0xffffffff). - -The complete ASan output: - -# pcretest -32 -d $FILE -==14788==ERROR: AddressSanitizer: SEGV on unknown address 0x7f1bbffed4df (pc 0x7f1bbee3fe6b bp 0x7fff8b50d8c0 sp 0x7fff8b50d3a0 T0) -==14788==The signal is caused by a READ memory access. - #0 0x7f1bbee3fe6a in match /tmp/portage/dev-libs/libpcre-8.40/work/pcre-8.40/pcre_exec.c:5473:18 - #1 0x7f1bbee09226 in pcre32_exec /tmp/portage/dev-libs/libpcre-8.40/work/pcre-8.40/pcre_exec.c:6936:8 - #2 0x527d6c in main /tmp/portage/dev-libs/libpcre-8.40/work/pcre-8.40/pcretest.c:5218:9 - #3 0x7f1bbddd678f in __libc_start_main /tmp/portage/sys-libs/glibc-2.23-r3/work/glibc-2.23/csu/../csu/libc-start.c:289 - #4 0x41b438 in _init (/usr/bin/pcretest+0x41b438) - -AddressSanitizer can not provide additional info. -SUMMARY: AddressSanitizer: SEGV /tmp/portage/dev-libs/libpcre-8.40/work/pcre-8.40/pcre_exec.c:5473:18 in match -==14788==ABORTING - -Upstream-Status: Backport [https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_ucd.c?view=patch&r1=316&r2=670&sortby=date \ - https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_internal.h?view=patch&r1=600&r2=670&sortby=date] -CVE: CVE-2017-7186 - -Signed-off-by: Robert Yang <liezhi.yang@windriver.com> - ---- trunk/src/pcre2_ucd.c 2015/07/17 15:44:51 316 -+++ trunk/src/pcre2_ucd.c 2017/02/24 18:25:32 670 -@@ -41,6 +41,20 @@ - - const char *PRIV(unicode_version) = "8.0.0"; - -+/* If the 32-bit library is run in non-32-bit mode, character values -+greater than 0x10ffff may be encountered. For these we set up a -+special record. */ -+ -+#if PCRE2_CODE_UNIT_WIDTH == 32 -+const ucd_record PRIV(dummy_ucd_record)[] = {{ -+ ucp_Common, /* script */ -+ ucp_Cn, /* type unassigned */ -+ ucp_gbOther, /* grapheme break property */ -+ 0, /* case set */ -+ 0, /* other case */ -+ }}; -+#endif -+ - /* When recompiling tables with a new Unicode version, please check the - types in this structure definition from pcre2_internal.h (the actual - field names will be different): ---- trunk/src/pcre2_internal.h 2016/11/19 12:46:24 600 -+++ trunk/src/pcre2_internal.h 2017/02/24 18:25:32 670 -@@ -1774,10 +1774,17 @@ - /* UCD access macros */ - - #define UCD_BLOCK_SIZE 128 --#define GET_UCD(ch) (PRIV(ucd_records) + \ -+#define REAL_GET_UCD(ch) (PRIV(ucd_records) + \ - PRIV(ucd_stage2)[PRIV(ucd_stage1)[(int)(ch) / UCD_BLOCK_SIZE] * \ - UCD_BLOCK_SIZE + (int)(ch) % UCD_BLOCK_SIZE]) - -+#if PCRE2_CODE_UNIT_WIDTH == 32 -+#define GET_UCD(ch) ((ch > MAX_UTF_CODE_POINT)? \ -+ PRIV(dummy_ucd_record) : REAL_GET_UCD(ch)) -+#else -+#define GET_UCD(ch) REAL_GET_UCD(ch) -+#endif -+ - #define UCD_CHARTYPE(ch) GET_UCD(ch)->chartype - #define UCD_SCRIPT(ch) GET_UCD(ch)->script - #define UCD_CATEGORY(ch) PRIV(ucp_gentype)[UCD_CHARTYPE(ch)] -@@ -1834,6 +1841,9 @@ - #define _pcre2_default_compile_context PCRE2_SUFFIX(_pcre2_default_compile_context_) - #define _pcre2_default_match_context PCRE2_SUFFIX(_pcre2_default_match_context_) - #define _pcre2_default_tables PCRE2_SUFFIX(_pcre2_default_tables_) -+#if PCRE2_CODE_UNIT_WIDTH == 32 -+#define _pcre2_dummy_ucd_record PCRE2_SUFFIX(_pcre2_dummy_ucd_record_) -+#endif - #define _pcre2_hspace_list PCRE2_SUFFIX(_pcre2_hspace_list_) - #define _pcre2_vspace_list PCRE2_SUFFIX(_pcre2_vspace_list_) - #define _pcre2_ucd_caseless_sets PCRE2_SUFFIX(_pcre2_ucd_caseless_sets_) -@@ -1858,6 +1868,9 @@ - extern const uint32_t PRIV(vspace_list)[]; - extern const uint32_t PRIV(ucd_caseless_sets)[]; - extern const ucd_record PRIV(ucd_records)[]; -+#if PCRE2_CODE_UNIT_WIDTH == 32 -+extern const ucd_record PRIV(dummy_ucd_record)[]; -+#endif - extern const uint8_t PRIV(ucd_stage1)[]; - extern const uint16_t PRIV(ucd_stage2)[]; - extern const uint32_t PRIV(ucp_gbtable)[]; |