Description
An issue was discovered in Artifex MuPDF before 1912de5f08e90af1d9d0a9791f58ba3afdb9d465. The pdf_run_xobject function in pdf-op-run.c encounters a NULL pointer dereference during a Fitz fz_paint_pixmap_with_mask painting operation. Versions 1.11 and later are unaffected.
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | mupdf | 1.9a+ds1-4 | — |
| Debian 13 | mupdf | 1.9a+ds1-4 | — |
| Debian 12 | mupdf | 1.9a+ds1-4 | — |
| Debian 8 | mupdf | 1.5-1+deb8u2 | DSA-3797-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | mupdf | No fix yet | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | mupdf | 1.10a-r2 | — |
| Alpine v3.23 | mupdf | 1.10a-r2 | — |
| Alpine v3.22 | mupdf | 1.10a-r2 | — |
| Alpine v3.21 | mupdf | 1.10a-r2 | — |
| Alpine v3.20 | mupdf | 1.10a-r2 | — |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | mupdf | 1.10a-r2 | — |
| Alpine v3.18 | mupdf | 1.10a-r2 | — |
| Alpine v3.17 | mupdf | 1.10a-r2 | — |
| Alpine v3.16 | mupdf | 1.10a-r2 | — |
| Alpine v3.15 | mupdf | 1.10a-r2 | — |
| Alpine v3.14 | mupdf | 1.10a-r2 | — |
| Alpine v3.13 | mupdf | 1.10a-r2 | — |
| Alpine v3.12 | mupdf | 1.10a-r2 | — |
| Alpine v3.11 | mupdf | 1.10a-r2 | — |
| Alpine v3.10 | mupdf | 1.10a-r2 | — |
| Alpine v3.9 | mupdf | 1.10a-r2 | — |
| Alpine v3.8 | mupdf | 1.10a-r2 | — |
| Alpine v3.7 | mupdf | 1.10a-r2 | — |
| Alpine v3.6 | mupdf | 1.10a-r2 | — |
| Alpine v3.5 | mupdf | 1.10a-r2 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Artifex MuPDF - Null Pointer Dereference EDB-42138 · dos · Jun 7, 2017 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- DSA-3797-1 mupdf - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://git.ghostscript.com/?p=mupdf.git%3Bh=1912de5f08e90af1d9d0a9791f58ba3afdb9d465
- DSA-3797 vendor-advisory
- https://bugs.ghostscript.com/show_bug.cgi?id=697500
- GLSA-201706-08 vendor-advisory
- 42138 exploit
- 96213 vdb-entry