Description
pdf/pdf-write.c in Artifex MuPDF before 1.12.0 mishandles certain length changes when a repair operation occurs during a clean operation, which allows remote attackers to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact via a crafted PDF document.
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 | 1.12.0+ds1-1 | — |
| Debian 13 | mupdf | 1.12.0+ds1-1 | — |
| Debian 12 | mupdf | 1.12.0+ds1-1 | — |
| Debian 9 | mupdf | 1.9a+ds1-4+deb9u4 | DSA-4334-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | mupdf | No fix yet | — |
Advisories 1
- DSA-4334-1 mupdf - security update Debian Security (DSA / DLA) · Mar 9, 2026