From d99093fb4bb5652015c06274d64083daa2439e4f Mon Sep 17 00:00:00 2001 From: V3n3RiX Date: Wed, 3 Mar 2021 10:28:17 +0000 Subject: gentoo resync : 03.03.2021 --- .../mupdf/files/mupdf-1.18.0-CVE-2021-3407.patch | 51 ++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 app-text/mupdf/files/mupdf-1.18.0-CVE-2021-3407.patch (limited to 'app-text/mupdf/files') diff --git a/app-text/mupdf/files/mupdf-1.18.0-CVE-2021-3407.patch b/app-text/mupdf/files/mupdf-1.18.0-CVE-2021-3407.patch new file mode 100644 index 000000000000..566ee562389c --- /dev/null +++ b/app-text/mupdf/files/mupdf-1.18.0-CVE-2021-3407.patch @@ -0,0 +1,51 @@ +https://bugs.gentoo.org/772311 + +From cee7cefc610d42fd383b3c80c12cbc675443176a Mon Sep 17 00:00:00 2001 +From: Robin Watts +Date: Fri, 22 Jan 2021 17:05:15 +0000 +Subject: [PATCH 1/1] Bug 703366: Fix double free of object during + linearization. + +This appears to happen because we parse an illegal object from +a broken file and assign it to object 0, which is defined to +be free. + +Here, we fix the parsing code so this can't happen. +--- + source/pdf/pdf-parse.c | 6 ++++++ + source/pdf/pdf-xref.c | 2 ++ + 2 files changed, 8 insertions(+) + +diff --git a/source/pdf/pdf-parse.c b/source/pdf/pdf-parse.c +index 7abc8c3d4..5761c3351 100644 +--- a/source/pdf/pdf-parse.c ++++ b/source/pdf/pdf-parse.c +@@ -749,6 +749,12 @@ pdf_parse_ind_obj(fz_context *ctx, pdf_document *doc, + fz_throw(ctx, FZ_ERROR_SYNTAX, "expected generation number (%d ? obj)", num); + } + gen = buf->i; ++ if (gen < 0 || gen >= 65536) ++ { ++ if (try_repair) ++ *try_repair = 1; ++ fz_throw(ctx, FZ_ERROR_SYNTAX, "invalid generation number (%d)", gen); ++ } + + tok = pdf_lex(ctx, file, buf); + if (tok != PDF_TOK_OBJ) +diff --git a/source/pdf/pdf-xref.c b/source/pdf/pdf-xref.c +index 1b2bdcd59..30197b4b8 100644 +--- a/source/pdf/pdf-xref.c ++++ b/source/pdf/pdf-xref.c +@@ -1190,6 +1190,8 @@ pdf_read_new_xref(fz_context *ctx, pdf_document *doc, pdf_lexbuf *buf) + { + ofs = fz_tell(ctx, doc->file); + trailer = pdf_parse_ind_obj(ctx, doc, doc->file, buf, &num, &gen, &stm_ofs, NULL); ++ if (num == 0) ++ fz_throw(ctx, FZ_ERROR_GENERIC, "Trailer object number cannot be 0\n"); + } + fz_catch(ctx) + { +-- +2.17.1 + -- cgit v1.2.3