4.146. poppler

When working with a PDF document with text spanning multiple columns, text selection may not have followed the flow of the text. This update improves the text selection to respect the text flow.

A regression was introduced in the previous security update, RHSA-2009:0480, that prevented poppler from rendering PDFs which contained arithmetically encoded JBIG2 images with an unknown length. Specifically, poppler was unable to render PDFs generated by a Xerox WorkCentre 7232 scanner. With this update, such PDFs render correctly, as expected.

Previously, poppler was unable to open some PDF files created with Adobe Acrobat due to incorrect determination of the position in the JBIG2 stream. With this update, such PDFs open correctly.

Due to an error in memory allocation, previous versions of poppler may have terminated unexpectedly while rendering certain PDF documents. With this update, the underlying source code has been modified to address this issue, and poppler no longer fails to render such PDF documents.

Previously, poppler was unable to open some PDF files due to unsupported security feature and the file opening failed with the following error:

Error: Unsupported version/revision (4/4) of Standard security handler Error: Incorrect password With this update, the underlying source code has been modified and such PDF files open as expected.

Prior to this update, certain PDF documents may have been rendered with some characters displayed backwards. With this update, an upstream patch has been applied to ensure that poppler takes into account the horizontal scaling when updating the font, and such PDF documents are now rendered correctly.