diff options
| author | Efraim Flashner <[email protected]> | 2016-08-29 23:46:33 +0300 |
|---|---|---|
| committer | Efraim Flashner <[email protected]> | 2016-08-29 23:46:33 +0300 |
| commit | b3d2be945d2dfe08e3b73102dd0fd3f4a0a93b60 (patch) | |
| tree | 707c6a5e18474b410e39fa6892521c9f47518ccc /gnu/packages/patches/mupdf-CVE-2016-6265.patch | |
| parent | 97127431ee9133626fea62449706d729d80b73f6 (diff) | |
| parent | 5b63a8568b39c019970569773bace18fab17a157 (diff) | |
Merge remote-tracking branch 'origin/master' into core-updates
Diffstat (limited to 'gnu/packages/patches/mupdf-CVE-2016-6265.patch')
| -rw-r--r-- | gnu/packages/patches/mupdf-CVE-2016-6265.patch | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/gnu/packages/patches/mupdf-CVE-2016-6265.patch b/gnu/packages/patches/mupdf-CVE-2016-6265.patch new file mode 100644 index 0000000000..58f5c3726c --- /dev/null +++ b/gnu/packages/patches/mupdf-CVE-2016-6265.patch @@ -0,0 +1,30 @@ +Fix CVE-2016-6265 (use after free in pdf_load_xref()). + +https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6265 +https://security-tracker.debian.org/tracker/CVE-2016-6265 + +Patch copied from upstream source repository: + +http://git.ghostscript.com/?p=mupdf.git;h=fa1936405b6a84e5c9bb440912c23d532772f958 + +diff --git a/source/pdf/pdf-xref.c b/source/pdf/pdf-xref.c +index 576c315..3222599 100644 +--- a/source/pdf/pdf-xref.c ++++ b/source/pdf/pdf-xref.c +@@ -1184,8 +1184,14 @@ pdf_load_xref(fz_context *ctx, pdf_document *doc, pdf_lexbuf *buf) + fz_throw(ctx, FZ_ERROR_GENERIC, "object offset out of range: %d (%d 0 R)", (int)entry->ofs, i); + } + if (entry->type == 'o') +- if (entry->ofs <= 0 || entry->ofs >= xref_len || pdf_get_xref_entry(ctx, doc, entry->ofs)->type != 'n') +- fz_throw(ctx, FZ_ERROR_GENERIC, "invalid reference to an objstm that does not exist: %d (%d 0 R)", (int)entry->ofs, i); ++ { ++ /* Read this into a local variable here, because pdf_get_xref_entry ++ * may solidify the xref, hence invalidating "entry", meaning we ++ * need a stashed value for the throw. */ ++ fz_off_t ofs = entry->ofs; ++ if (ofs <= 0 || ofs >= xref_len || pdf_get_xref_entry(ctx, doc, ofs)->type != 'n') ++ fz_throw(ctx, FZ_ERROR_GENERIC, "invalid reference to an objstm that does not exist: %d (%d 0 R)", (int)ofs, i); ++ } + } + } + |