diff options
Diffstat (limited to 'gnu/packages/patches/mupdf-CVE-2017-5991.patch')
| -rw-r--r-- | gnu/packages/patches/mupdf-CVE-2017-5991.patch | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/gnu/packages/patches/mupdf-CVE-2017-5991.patch b/gnu/packages/patches/mupdf-CVE-2017-5991.patch deleted file mode 100644 index 1fa6dc3466..0000000000 --- a/gnu/packages/patches/mupdf-CVE-2017-5991.patch +++ /dev/null @@ -1,101 +0,0 @@ -Fix CVE-2017-5991: - -https://bugs.ghostscript.com/show_bug.cgi?id=697500 -https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5991 -https://security-tracker.debian.org/tracker/CVE-2017-5991 - -Patch lifted from upstream source repository: - -http://git.ghostscript.com/?p=mupdf.git;h=1912de5f08e90af1d9d0a9791f58ba3afdb9d465 - -From 1912de5f08e90af1d9d0a9791f58ba3afdb9d465 Mon Sep 17 00:00:00 2001 -From: Robin Watts <robin.watts@artifex.com> -Date: Thu, 9 Feb 2017 15:49:15 +0000 -Subject: [PATCH] Bug 697500: Fix NULL ptr access. - -Cope better with errors during rendering - avoid letting the -gstate stack get out of sync. - -This avoids us ever getting into the situation of popping -a clip when we should be popping a mask or a group. This was -causing an unexpected case in the painting. ---- - source/pdf/pdf-op-run.c | 26 ++++++++++++++++++-------- - 1 file changed, 18 insertions(+), 8 deletions(-) - -diff --git a/source/pdf/pdf-op-run.c b/source/pdf/pdf-op-run.c -index a3ea895d..f1eac8d3 100644 ---- a/source/pdf/pdf-op-run.c -+++ b/source/pdf/pdf-op-run.c -@@ -1213,6 +1213,7 @@ pdf_run_xobject(fz_context *ctx, pdf_run_processor *proc, pdf_xobject *xobj, pdf - pdf_run_processor *pr = (pdf_run_processor *)proc; - pdf_gstate *gstate = NULL; - int oldtop = 0; -+ int oldbot = -1; - fz_matrix local_transform = *transform; - softmask_save softmask = { NULL }; - int gparent_save; -@@ -1232,16 +1233,17 @@ pdf_run_xobject(fz_context *ctx, pdf_run_processor *proc, pdf_xobject *xobj, pdf - fz_var(cleanup_state); - fz_var(gstate); - fz_var(oldtop); -+ fz_var(oldbot); - - gparent_save = pr->gparent; - pr->gparent = pr->gtop; -+ oldtop = pr->gtop; - - fz_try(ctx) - { - pdf_gsave(ctx, pr); - - gstate = pr->gstate + pr->gtop; -- oldtop = pr->gtop; - - pdf_xobject_bbox(ctx, xobj, &xobj_bbox); - pdf_xobject_matrix(ctx, xobj, &xobj_matrix); -@@ -1302,12 +1304,25 @@ pdf_run_xobject(fz_context *ctx, pdf_run_processor *proc, pdf_xobject *xobj, pdf - - doc = pdf_get_bound_document(ctx, xobj->obj); - -+ oldbot = pr->gbot; -+ pr->gbot = pr->gtop; -+ - pdf_process_contents(ctx, (pdf_processor*)pr, doc, resources, xobj->obj, NULL); - } - fz_always(ctx) - { -+ /* Undo any gstate mismatches due to the pdf_process_contents call */ -+ if (oldbot != -1) -+ { -+ while (pr->gtop > pr->gbot) -+ { -+ pdf_grestore(ctx, pr); -+ } -+ pr->gbot = oldbot; -+ } -+ - if (cleanup_state >= 3) -- pdf_grestore(ctx, pr); /* Remove the clippath */ -+ pdf_grestore(ctx, pr); /* Remove the state we pushed for the clippath */ - - /* wrap up transparency stacks */ - if (transparency) -@@ -1341,13 +1356,8 @@ pdf_run_xobject(fz_context *ctx, pdf_run_processor *proc, pdf_xobject *xobj, pdf - pr->gstate[pr->gparent].ctm = gparent_save_ctm; - pr->gparent = gparent_save; - -- if (gstate) -- { -- while (oldtop < pr->gtop) -- pdf_grestore(ctx, pr); -- -+ while (oldtop < pr->gtop) - pdf_grestore(ctx, pr); -- } - - pdf_unmark_obj(ctx, xobj->obj); - } --- -2.12.0 - |