UBUNTU-CVE-2025-48172
- Source
- https://ubuntu.com/security/CVE-2025-48172
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-48172.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2025-48172
- Upstream
- Published
- 2025-07-04T13:15:00Z
- Modified
- 2025-07-14T04:52:09Z
- Severity
-
- 5.6 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L CVSS Calculator
- Ubuntu - medium
- Summary
- [none]
- Details
-
CHMLib through 2bef8d0, as used in SumatraPDF and other products, has a chmlib.c _chmdecompressblock integer overflow. There is a resultant heap-based buffer overflow in _chmfetch_bytes.
- References
-
- https://ubuntu.com/security/CVE-2025-48172
- https://www.cve.org/CVERecord?id=CVE-2025-48172
- https://drive.google.com/file/d/1wq51px42eoJz2VQ1Qu9ObPVQVom9T9H_/view?usp=sharing
- https://drive.google.com/file/d/1XpulFyCGlq7Szzg5RsH-eRwZ6OyuSozl/view?usp=sharing
- https://github.com/jedwing/CHMLib/blob/2bef8d063ec7d88a8de6fd9f0513ea42ac0fa21f/src/chm_lib.c#L1386
- https://github.com/sumatrapdfreader/sumatrapdf/commit/08179946a745cf1605e4b9670942ec1a6e1f4c5d
Affected packages
Ubuntu:Pro:16.04:LTS / chmlib
Package
- Name
- chmlib
- Purl
- pkg:deb/ubuntu/chmlib@2:0.40a-3?arch=source&distro=esm-apps/xenial
Ubuntu:Pro:18.04:LTS / chmlib
Package
- Name
- chmlib
- Purl
- pkg:deb/ubuntu/chmlib@2:0.40a-4?arch=source&distro=esm-apps/bionic
Ubuntu:Pro:20.04:LTS / chmlib
Package
- Name
- chmlib
- Purl
- pkg:deb/ubuntu/chmlib@2:0.40a-5?arch=source&distro=esm-apps/focal
Ubuntu:22.04:LTS / chmlib
Package
- Name
- chmlib
- Purl
- pkg:deb/ubuntu/chmlib@2:0.40a-7?arch=source&distro=jammy
Ubuntu:24.04:LTS / chmlib
Package
- Name
- chmlib
- Purl
- pkg:deb/ubuntu/chmlib@2:0.40a-8?arch=source&distro=noble