[USN-7868-1] Raptor vulnerabilities

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Ubuntu Security Notice USN-7868-1
November 10, 2025

raptor vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in Raptor.

Software Description:
- raptor: RDF syntax library

Details:

Hanno Böck discovered that Raptor incorrectly handled memory operations
when processing certain input files. An attacker could use this issue to
cause Raptor to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2017-18926)

Hanno Böck discovered that Raptor incorrectly handled memory operations
when processing certain input files. An attacker could possibly use this
issue to cause Raptor to crash, resulting in a denial of service.
(CVE-2020-25713)

Update instructions:

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

Ubuntu 16.04 LTS
libraptor1 1.4.21-11ubuntu0.1~esm1
Available with Ubuntu Pro
raptor-utils 1.4.21-11ubuntu0.1~esm1
Available with Ubuntu Pro

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

References:
https://ubuntu.com/security/notices/USN-7868-1
CVE-2017-18926, CVE-2020-25713