RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-25 20:57:35 +00:00
Code Issues Activity Actions

LibPDF: Assert compressed xref's 2nd field is non-zero

Browse source
This commit is contained in:
Matthew Olsson 2023-07-16 14:35:43 -07:00 • committed by Jelle Raaijmakers
parent f9c1d11380
commit bfd8faedf9
1 changed files with 2 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

2
Userland/Libraries/LibPDF/DocumentParser.cpp
View file

@ -387,6 +387,8 @@ PDFErrorOr<NonnullRefPtr<XRefTable>> DocumentParser::parse_xref_stream()
auto field_sizes = TRY(dict->get_array(m_document, "W"));
if (field_sizes->size() != 3)
return error("Malformed xref dictionary");
if (field_sizes->at(1).get_u32() == 0)
return error("Malformed xref dictionary");
auto highest_object_number = dict->get_value("Size").get<int>() - 1;