| Name | CVE-2025-48172 |
| Description | CHMLib through 2bef8d0, as used in SumatraPDF and other products, has a chm_lib.c _chm_decompress_block integer overflow. There is a resultant heap-based buffer overflow in _chm_fetch_bytes. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| chmlib (PTS) | bullseye | 2:0.40a-7 | fixed |
| bookworm | 2:0.40a-8 | fixed |
| trixie, sid | 2:0.40a-8.1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| chmlib | source | (unstable) | (not affected) | | | |
Notes
- chmlib <not-affected> (Vulnerable code introduced in changes from sumatrapdf)
Introduced with: https://github.com/sumatrapdfreader/sumatrapdf/commit/39528ca130c6ceac99c3d96ce7a26d9e99a0d3a9
Fixed by: https://github.com/sumatrapdfreader/sumatrapdf/commit/08179946a745cf1605e4b9670942ec1a6e1f4c5d