CVE-2018-19540 Memory corruption in n/a

What is CVE-2018-19540?

CVE-2018-19540 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 26 Nov 2018. 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

An issue was discovered in JasPer 1.900.8, 1.900.9, 1.900.10, 1.900.11, 1.900.12, 1.900.13, 1.900.14, 1.900.15, 1.900.16, 1.900.17, 1.900.18, 1.900.19, 1.900.20, 1.900.21, 1.900.22, 1.900.23, 1.900.24, 1.900.25, 1.900.26, 1.900.27, 1.900.28, 1.900.29, 1.900.30, 1.900.31, 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.0.7, 2.0.8, 2.0.9, 2.0.10, 2.0.11, 2.0.12, 2.0.13, 2.0.14, 2.0.15, 2.0.16. There is a heap-based buffer overflow of size 1 in the function jas_icctxtdesc_input in libjasper/base/jas_icc.c.

Weakness: CWE-787

Which versions are affected by CVE-2018-19540?

It affects 4 products.

Products include Debian Debian Linux, Jasper Project Jasper, Suse Linux Enterprise Desktop, Suse Linux Enterprise Server.

How do I fix CVE-2018-19540?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2018-19540 being exploited?

There is no known exploitation of CVE-2018-19540 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 GHSA-9f4h-jrhq-rc6w, UBUNTU-CVE-2018-19540.