Description
An exploitable memory corruption vulnerability exists in the JBIG2 parser of Artifex MuPDF 1.9. A specially crafted PDF can cause a negative number to be passed to a memset resulting in memory corruption and potential code execution. An attacker can specially craft a PDF and send to the victim to trigger this vulnerability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Artifex Software | MuPDF | 1.9, 1.10 RC2 | — |
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 | jbig2dec | 0.13-4 | — |
| Debian 13 | jbig2dec | 0.13-4 | — |
| Debian 12 | jbig2dec | 0.13-4 | — |
| Debian 8 | jbig2dec | 0.13-4~deb8u1 | DSA-3817-1 |
| Debian 7 | jbig2dec | 0.13-4~deb7u1 | DLA-874-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | jbig2dec | 0.12+20150918-1ubuntu0.1 | — |
| Ubuntu 14.04 LTS | jbig2dec | 0.11+20120125-1ubuntu1.1 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | mupdf | 1.18.0-1.7 | openSUSE-SU-2024:11068-1 |
Advisories 3
- DLA-874-1 jbig2dec - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3817-1 jbig2dec - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:11068-1 mupdf-1.18.0-1.7 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026