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Ubuntu 16.04 14.04 libpng Critical DoS CVE-2025-64505 CVE-2026-25646

ubuntu
Calendar Grey March 12, 2026
Dist Ubuntu Esm H88
Discover critical security issues fixed in libpng for Ubuntu 14.04 and 16.04, preventing DoS and sensitive info leaks.
Several security issues were fixed in libpng.

Summary

Several security issues were fixed in libpng.

Software Description:

- libpng: PNG (Portable Network Graphics) file library

Details:

It was discovered that libpng did not properly handle memory when processing

certain PNG files. An attacker could possibly use this issue to cause libpng

to crash, resulting in a denial of service, or disclose sensitive information.

(CVE-2025-64505)

Joshua Inscoe discovered that libpng did not properly handle memory when

processing certain PNG files. An attacker could possibly use this issue

to cause libpng to crash, resulting in a denial of service, disclose sensitive

information, or execute arbitrary code. (CVE-2026-25646)

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu libpng sensitive information

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 LTS
  libpng12-0                      1.2.54-1ubuntu1.1+esm2
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  libpng12-0                      1.2.50-1ubuntu2.14.04.3+esm1
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-8081-1

CVE-2025-64505, CVE-2026-25646

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8081-1

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu libpng sensitive information

Package Information

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