Fedora 32: FEDORA-2021-fcb25df974 Critical: Djvulibre Stack Overflow Fix

DjVu is a web-centric format and software platform for distributing documents

and images. DjVu can advantageously replace PDF, PS, TIFF, JPEG, and GIF for

distributing scanned documents, digital documents, or high-resolution pictures.

DjVu content downloads faster, displays and renders faster, looks nicer on a

screen, and consume less client resources than competing formats. DjVu images

display instantly and can be smoothly zoomed and panned with no lengthy

re-rendering.

DjVuLibre is a free (GPL'ed) implementation of DjVu, including viewers,

decoders, simple encoders, and utilities. The browser plugin is in its own

separate sub-package.

This update fixes several issues in djvulibre. These are mostly related to

opening of corrupted files.

* Tue May 4 2021 Marek Kasik - 3.5.27-25

- Fix exporting of djvu icons with Inkscape

- Related: #1863428

* Mon May 3 2021 Marek Kasik - 3.5.27-24

- Avoid unsigned short overflow in GBitmap when allocating row buffer

- Resolves: #1943424

* Mon May 3 2021 Marek Kasik - 3.5.27-23

- Avoid stack overflow in DjVuPort by remembering which file we are opening

- Resolves: #1943411, #1943685

* Mon May 3 2021 Marek Kasik - 3.5.27-22

- Check input pool for NULL

- Resolves: #1943410

* Mon May 3 2021 Marek Kasik - 3.5.27-21

- Avoid integer overflow when allocating bitmap

- Resolves: #1943409

* Mon May 3 2021 Marek Kasik - 3.5.27-20

- Check image size for 0

- Resolves: #1943408

[ 1 ] Bug #1943685 - CVE-2021-3500 djvulibre: Stack overflow in function DJVU::DjVuDocument::get_djvu_file() via crafted djvu file

https://bugzilla.redhat.com/show_bug.cgi?id=1943685

su -c 'dnf upgrade --advisory FEDORA-2021-fcb25df974' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

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