Description
A flaw has been found in Artifex MuPDF up to 1.26.1 on Windows. The impacted element is the function get_system_dpi of the file platform/x11/win_main.c. This manipulation causes uncontrolled search path. The attack requires local access. The attack is considered to have high complexity. The exploitability is regarded as difficult. Upgrading to version 1.26.2 is sufficient to resolve this issue. Patch name: ebb125334eb007d64e579204af3c264aadf2e244. Upgrading the affected component is recommended.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Artifex | MuPDF | 1.26.0, 1.26.1 | 1.26.2 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | mupdf | No fix yet | — |
| Ubuntu 24.04 LTS | mupdf | No fix yet | — |
| Ubuntu 22.04 LTS | mupdf | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | mupdf | No fix yet | — |
| Ubuntu Pro 18.04 LTS | mupdf | No fix yet | — |
| Ubuntu Pro 16.04 LTS | mupdf | No fix yet | — |
References
- VDB-344924 | Artifex MuPDF win_main.c get_system_dpi uncontrolled search path vdb-entry technical-description
- VDB-344924 | CTI Indicators (IOB, IOC, TTP, IOA) signature permissions-required
- Submit #750978 | Artifex Software MuPDF 1.26.2 Uncontrolled Search Path third-party-advisory
- https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=ebb125334eb007d64e579204af3c264aadf2e244 patch
- https://casper.mupdf.com/downloads/archive/mupdf-1.26.2-windows.zip patch
- https://artifex.com/ product