CVE-2019-9959 Integer overflow in n/a

What is CVE-2019-9959?

CVE-2019-9959 is a medium-severity vulnerability in Debian Debian Linux, published on 22 Jul 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The JPXStream::init function in Poppler 0.78.0 and earlier doesn't check for negative values of stream length, leading to an Integer Overflow, thereby making it possible to allocate a large memory chunk on the heap, with a size controlled by an attacker, as demonstrated by pdftocairo.

Weakness: CWE-190

Which versions are affected by CVE-2019-9959?

It affects 7 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Freedesktop Poppler, Redhat Enterprise Linux, Redhat Enterprise Linux Eus, Redhat Enterprise Linux Server Aus and 1 more.

How do I fix CVE-2019-9959?

Apply the vendor's patch.

Is CVE-2019-9959 being exploited?

There is no known exploitation of CVE-2019-9959 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2019-9959, DEBIAN-CVE-2019-9959, DLA-1963-1, GHSA-834c-4748-827j, UBUNTU-CVE-2019-9959.