Description
In MuPDF 1.13.0, there is an infinite loop in the fz_skip_space function of the pdf/pdf-xref.c file. A remote adversary could leverage this vulnerability to cause a denial of service via a crafted pdf file.
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 | 1.13.0+ds1-3 | — |
| Debian 13 | mupdf | 1.13.0+ds1-3 | — |
| Debian 12 | mupdf | 1.13.0+ds1-3 | — |
| Debian 9 | mupdf | 1.14.0+ds1-4+deb9u1 | DLA-2765-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | mupdf | 1.16.1+ds1-1ubuntu1+esm1 | USN-7825-1 |
| Ubuntu Pro 18.04 LTS | mupdf | 1.12.0+ds1-1ubuntu0.1~esm1 | USN-7825-1 |
| Ubuntu Pro 16.04 LTS | mupdf | 1.7a-1ubuntu0.1~esm1 | USN-7825-1 |
Advisories 2
- USN-7825-1 mupdf vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- DLA-2765-1 mupdf - security update Debian Security (DSA / DLA) · Mar 9, 2026