Description
The tokenizer in QPDF 6.0.0 and 7.0.b1 is recursive for arrays and dictionaries, which allows remote attackers to cause a denial of service (stack consumption and segmentation fault) or possibly have unspecified other impact via a PDF document with a deep data structure, as demonstrated by a crash in QPDFObjectHandle::parseInternal in libqpdf/QPDFObjectHandle.cc.
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 | qpdf | 7.0.0-1 | — |
| Debian 13 | qpdf | 7.0.0-1 | — |
| Debian 12 | qpdf | 7.0.0-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | qpdf | 8.0.2-3~16.04.1 | USN-3638-1 |
| Ubuntu 14.04 LTS | qpdf | 8.0.2-3~14.04.1 | USN-3638-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | cups-filters | 1.0.58-19.2.3 | SUSE-SU-2018:3066-1 |
| SLES 12 SP3 | qpdf | 7.1.1-3.3.4 | SUSE-SU-2018:3066-1 |
| SLES 12 SP2 | cups-filters | 1.0.58-15.2.1 | SUSE-SU-2018:3066-2, SUSE-SU-2018:3066-1 |
| SLES 12 SP2 | qpdf | 7.1.1-3.3.4 | SUSE-SU-2018:3066-2, SUSE-SU-2018:3066-1 |
| SLES 12 SP1 | cups-filters | 1.0.58-15.2.1 | SUSE-SU-2018:3066-1 |
| SLES 12 SP1 | qpdf | 7.1.1-3.3.4 | SUSE-SU-2018:3066-1 |
| SLES 12 | cups-filters | 1.0.58-15.2.1 | SUSE-SU-2018:3066-1 |
| SLES 12 | qpdf | 7.1.1-3.3.4 | SUSE-SU-2018:3066-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | cups-filters | 1.0.58-19.2.3 | SUSE-SU-2018:3066-1 |
| SLES for SAP 12 SP3 | qpdf | 7.1.1-3.3.4 | SUSE-SU-2018:3066-1 |
| SLES for SAP 12 SP2 | cups-filters | 1.0.58-15.2.1 | SUSE-SU-2018:3066-1 |
| SLES for SAP 12 SP2 | qpdf | 7.1.1-3.3.4 | SUSE-SU-2018:3066-1 |
| SLES for SAP 12 SP1 | cups-filters | 1.0.58-15.2.1 | SUSE-SU-2018:3066-1 |
| SLES for SAP 12 SP1 | qpdf | 7.1.1-3.3.4 | SUSE-SU-2018:3066-1 |
| SUSE OpenStack Cloud 7 | cups-filters | 1.0.58-15.2.1 | SUSE-SU-2018:3066-1 |
| SUSE OpenStack Cloud 7 | qpdf | 7.1.1-3.3.4 | SUSE-SU-2018:3066-1 |
| SUSE Enterprise Storage 4 | cups-filters | 1.0.58-15.2.1 | SUSE-SU-2018:3066-1 |
| SUSE Enterprise Storage 4 | qpdf | 7.1.1-3.3.4 | SUSE-SU-2018:3066-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | qpdf | 10.3.2-1.3 | openSUSE-SU-2024:11289-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | qpdf | 7.0.0-r0 | — |
| Alpine v3.23 | qpdf | 7.0.0-r0 | — |
| Alpine v3.22 | qpdf | 7.0.0-r0 | — |
| Alpine v3.21 | qpdf | 7.0.0-r0 | — |
| Alpine v3.20 | qpdf | 7.0.0-r0 | — |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | qpdf | 7.0.0-r0 | — |
| Alpine v3.18 | qpdf | 7.0.0-r0 | — |
| Alpine v3.17 | qpdf | 7.0.0-r0 | — |
| Alpine v3.16 | qpdf | 7.0.0-r0 | — |
| Alpine v3.15 | qpdf | 7.0.0-r0 | — |
| Alpine v3.14 | qpdf | 7.0.0-r0 | — |
| Alpine v3.13 | qpdf | 7.0.0-r0 | — |
| Alpine v3.12 | qpdf | 7.0.0-r0 | — |
| Alpine v3.11 | qpdf | 7.0.0-r0 | — |
| Alpine v3.10 | qpdf | 7.0.0-r0 | — |
| Alpine v3.9 | qpdf | 7.0.0-r0 | — |
| Alpine v3.8 | qpdf | 7.0.0-r0 | — |
Advisories 4
- USN-3638-1 qpdf vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- SUSE-SU-2018:3066-2 Security update for qpdf SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3066-1 Security update for qpdf SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11289-1 libqpdf28-10.3.2-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026