1 files changed, 0 insertions, 79 deletions
diff --git a/meta/recipes-extended/libarchive/libarchive/CVE-2018-1000878.patch b/meta/recipes-extended/libarchive/libarchive/CVE-2018-1000878.patch
deleted file mode 100644
index 7468fd3c93..0000000000
--- a/meta/recipes-extended/libarchive/libarchive/CVE-2018-1000878.patch
+++ /dev/null
@@ -1,79 +0,0 @@
-CVE: CVE-2018-1000878
-Upstream-Status: Backport
-Signed-off-by: Ross Burton <ross.burton@intel.com>
-
-From bfcfe6f04ed20db2504db8a254d1f40a1d84eb28 Mon Sep 17 00:00:00 2001
-From: Daniel Axtens <dja@axtens.net>
-Date: Tue, 4 Dec 2018 00:55:22 +1100
-Subject: [PATCH] rar: file split across multi-part archives must match
-
-Fuzzing uncovered some UAF and memory overrun bugs where a file in a
-single file archive reported that it was split across multiple
-volumes. This was caused by ppmd7 operations calling
-rar_br_fillup. This would invoke rar_read_ahead, which would in some
-situations invoke archive_read_format_rar_read_header.  That would
-check the new file name against the old file name, and if they didn't
-match up it would free the ppmd7 buffer and allocate a new
-one. However, because the ppmd7 decoder wasn't actually done with the
-buffer, it would continue to used the freed buffer. Both reads and
-writes to the freed region can be observed.
-
-This is quite tricky to solve: once the buffer has been freed it is
-too late, as the ppmd7 decoder functions almost universally assume
-success - there's no way for ppmd_read to signal error, nor are there
-good ways for functions like Range_Normalise to propagate them. So we
-can't detect after the fact that we're in an invalid state - e.g. by
-checking rar->cursor, we have to prevent ourselves from ever ending up
-there. So, when we are in the dangerous part or rar_read_ahead that
-assumes a valid split, we set a flag force read_header to either go
-down the path for split files or bail. This means that the ppmd7
-decoder keeps a valid buffer and just runs out of data.
-
-Found with a combination of AFL, afl-rb and qsym.
----
- libarchive/archive_read_support_format_rar.c | 9 +++++++++
- 1 file changed, 9 insertions(+)
-
-diff --git a/libarchive/archive_read_support_format_rar.c b/libarchive/archive_read_support_format_rar.c
-index 6f419c27..a8cc5c94 100644
---- a/libarchive/archive_read_support_format_rar.c
-+++ b/libarchive/archive_read_support_format_rar.c
-@@ -258,6 +258,7 @@ struct rar
-   struct data_block_offsets *dbo;
-   unsigned int cursor;
-   unsigned int nodes;
-+  char filename_must_match;
- 
-   /* LZSS members */
-   struct huffman_code maincode;
-@@ -1560,6 +1561,12 @@ read_header(struct archive_read *a, struct archive_entry *entry,
-     }
-     return ret;
-   }
-+  else if (rar->filename_must_match)
-+  {
-+    archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
-+      "Mismatch of file parts split across multi-volume archive");
-+    return (ARCHIVE_FATAL);
-+  }
- 
-   rar->filename_save = (char*)realloc(rar->filename_save,
-                                       filename_size + 1);
-@@ -2933,12 +2940,14 @@ rar_read_ahead(struct archive_read *a, size_t min, ssize_t *avail)
-     else if (*avail == 0 && rar->main_flags & MHD_VOLUME &&
-       rar->file_flags & FHD_SPLIT_AFTER)
-     {
-+      rar->filename_must_match = 1;
-       ret = archive_read_format_rar_read_header(a, a->entry);
-       if (ret == (ARCHIVE_EOF))
-       {
-         rar->has_endarc_header = 1;
-         ret = archive_read_format_rar_read_header(a, a->entry);
-       }
-+      rar->filename_must_match = 0;
-       if (ret != (ARCHIVE_OK))
-         return NULL;
-       return rar_read_ahead(a, min, avail);
--- 
-2.20.0
-