From: Ashutosh Gupta (ashugup3) <ashugup3@cisco.com>
Date: Fri, 3 Oct 2025 16:11:24 +0000 (+0000)
Subject: Pull request #4921: decompress: added check for mini_fat_persector to not to be zero
X-Git-Tag: 3.9.6.0~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=953c5c3d8a890959202251f22e4142cdb2bf6348;p=thirdparty%2Fsnort3.git

Pull request #4921: decompress: added check for mini_fat_persector to not to be zero

Merge in SNORT/snort3 from ~ASHUGUP3/snort3:bug_decompress_dividebyzero to master

Squashed commit of the following:

commit a0d4a7be7d1f6b3bc64c11356c21a182d542ab37
Author: ashutosh <ashugup3@cisco.com>
Date:   Fri Oct 3 14:50:53 2025 +0530

    decompress: added check for mini_fat_persector to not to be zero
---

diff --git a/src/decompress/file_olefile.cc b/src/decompress/file_olefile.cc
index b4659491b..7a802abe1 100644
--- a/src/decompress/file_olefile.cc
+++ b/src/decompress/file_olefile.cc
@@ -238,6 +238,8 @@ int32_t OleFile :: get_mini_fat_offset(int32_t sec_id)
 
     if (sec_id >=  mini_fat_persector)
     {
+        if (mini_fat_persector == 0)
+            return -1;
         sec_position = sec_id/mini_fat_persector;
         mini_sec_position = sec_id % mini_fat_persector;
     }