dany/pdfio
1
0
Fork 0
mirror of https://github.com/michaelrsweet/pdfio.git synced 2025-08-30 07:42:27 +02:00
Code Issues Packages Projects Releases Wiki Activity

Add underflow detection to TTF cmap code.

Browse Source
This commit is contained in:
Michael R Sweet
2025-08-27 11:19:35 -04:00
parent ccf3a90c97
commit 359b65298e
2 changed files with 7 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
CHANGES.md
View File

@@ -21,6 +21,12 @@ v1.6.0 - YYYY-MM-DD
(Issue #104) (Issue #104)
v1.5.5 - YYYY-MM-DD
-------------------
- Fixed TTF cmap underflow error.
v1.5.4 - 2025-08-26 v1.5.4 - 2025-08-26
------------------- -------------------

2
ttf.c
View File

@@ -1379,7 +1379,7 @@ read_cmap(ttf_t *font) // I - Font
/* language = */ read_ushort(font); /* language = */ read_ushort(font);
if (length > (256 + 6)) if (length > (256 + 6) || length < 7)
{ {
errorf(font, "Bad cmap table length at offset %u.", coffset); errorf(font, "Bad cmap table length at offset %u.", coffset);
return (false); return (false);