Description
Artifex jbig2dec 0.13 has a heap-based buffer over-read leading to denial of service (application crash) or disclosure of sensitive information from process memory, because of an integer overflow in the jbig2_decode_symbol_dict function in jbig2_symbol_dict.c in libjbig2dec.a during operation on a crafted .jb2 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 | jbig2dec | 0.13-4.1 | — |
| Debian 13 | jbig2dec | 0.13-4.1 | — |
| Debian 12 | jbig2dec | 0.13-4.1 | — |
| Debian 8 | jbig2dec | 0.13-4~deb8u2 | DSA-3855-1 |
| Debian 7 | jbig2dec | 0.13-4~deb7u2 | DLA-942-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | jbig2dec | 0.12+20150918-1ubuntu0.1 | USN-3297-1 |
| Ubuntu 14.04 LTS | jbig2dec | 0.11+20120125-1ubuntu1.1 | USN-3297-1 |
Advisories 3
- USN-3297-1 jbig2dec vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-942-1 jbig2dec - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3855-1 jbig2dec - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- DSA-3855 vendor-advisory
- GLSA-201708-10 vendor-advisory
- https://bugs.ghostscript.com/show_bug.cgi?id=697703