Two separate security notices have been issued for the Raptor vulnerability in Ubuntu systems. The first notice (USN-7869-1) affects Ubuntu 18.04 LTS and 16.04 LTS, while the second notice (USN-7868-1) only affects Ubuntu 16.04 LTS. Multiple vulnerabilities were discovered in Raptor, including issues with memory operations that could potentially cause a denial of service or allow an attacker to execute arbitrary code. To fix these issues, users can update their systems to the latest package versions available through Ubuntu Pro, which will be achieved through a standard system update.

[USN-7869-1] Raptor vulnerabilities
[USN-7868-1] Raptor vulnerabilities

[USN-7869-1] Raptor vulnerabilities

==========================================================================
Ubuntu Security Notice USN-7869-1
November 10, 2025

raptor2 vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in Raptor.

Software Description:
- raptor2: RDF syntax library

Details:

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)

Pedro Ribeiro discovered that Raptor incorrectly handled parsing certain
tuples. An attacker could possibly use this issue to cause Raptor to crash,
resulting in a denial of service. (CVE-2024-57822)

Pedro Ribeiro discovered that Raptor incorrectly handled parsing certain
turtles. An attacker could use this issue to cause Raptor to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2024-57823)

Update instructions:

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

Ubuntu 18.04 LTS
libraptor2-0 2.0.14-1ubuntu0.18.04.1+esm1
Available with Ubuntu Pro
raptor2-utils 2.0.14-1ubuntu0.18.04.1+esm1
Available with Ubuntu Pro

Ubuntu 16.04 LTS
libraptor2-0 2.0.14-1ubuntu0.16.04.1+esm1
Available with Ubuntu Pro
raptor2-utils 2.0.14-1ubuntu0.16.04.1+esm1
Available with Ubuntu Pro

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

References:
https://ubuntu.com/security/notices/USN-7869-1
CVE-2020-25713, CVE-2024-57822, CVE-2024-57823

[USN-7868-1] Raptor vulnerabilities

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

raptor vulnerabilities
==========================================================================

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