CVE-2008-5907 Null dereference in n/a

What is CVE-2008-5907?

CVE-2008-5907 is a medium-severity vulnerability in Debian Debian Linux, published on 15 Jan 2009. 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 png_check_keyword function in pngwutil.c in libpng before 1.0.42, and 1.2.x before 1.2.34, might allow context-dependent attackers to set the value of an arbitrary memory location to zero via vectors involving creation of crafted PNG files with keywords, related to an implicit cast of the '\0' character constant to a NULL pointer. NOTE: some sources incorrectly report this as a double free vulnerability.

Which versions are affected by CVE-2008-5907?

It affects 2 products.

Products include Debian Debian Linux, Libpng Libpng.

How do I fix CVE-2008-5907?

Upgrade to a fixed version.

Is CVE-2008-5907 being exploited?

There is no known exploitation of CVE-2008-5907 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-598m-m5h8-fc92.