Ubuntu alert USN-8693-1 (openjdk-17-crac)

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[USN-8693-1] CRaC JDK 17 vulnerabilities
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Mon, 31 Aug 2026 15:41:56 +0000
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==========================================================================
Ubuntu Security Notice USN-8693-1
August 31, 2026

openjdk-17-crac vulnerabilities
==========================================================================

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

- Ubuntu 26.04 LTS

Summary:

Several security issues were fixed in CRaC JDK 17.

Software Description:
- openjdk-17-crac: Open Source Java implementation with Coordinated Restore at Checkpoints

Details:

It was discovered that the JSSE component of CRaC JDK 17 did not correctly
authenticate users. A remote attacker could possibly use this issue to read
or modify sensitive data. (CVE-2026-46968)

It was discovered that the JSSE component of CRaC JDK 17 did not correctly
authorize users. A remote attacker could possibly use this issue to cause a
denial of service. (CVE-2026-46917)

It was discovered that the ImageIO component of CRaC JDK 17 did not
correctly authorize users. A remote attacker could possibly use this issue
to read or modify sensitive data. (CVE-2026-47010)

It was discovered that the 2D component of CRaC JDK 17 did not correctly
authorize users. A remote attacker could possibly use this issue to cause a
denial of service. (CVE-2026-47021, CVE-2026-47059)

It was discovered that the Libraries component of CRaC JDK 17 did not
correctly authorize users. A remote attacker could possibly use this issue
to cause a denial of service. (CVE-2026-47027)

It was discovered that the Security component of CRaC JDK 17 did not
correctly authenticate users. A remote attacker could possibly use this
issue to read or modify sensitive data. (CVE-2026-60147)

It was discovered that the Libraries component of CRaC JDK 17 did not
correctly authenticate users. A remote attacker could possibly use this
issue to read or modify sensitive data. (CVE-2026-47063)

It was discovered that the 2D (Little CMS) component of CRaC JDK 17 did not
correctly handle certain integer arithmetic. An attacker could possibly
use this issue to cause a denial of service. (CVE-2026-41254)

In addition to security fixes, the updated packages contain bug fixes, new
features, and possibly incompatible changes.

Please see the following for more information:
https://openjdk.org/groups/vulnerability/advisories/2026-...

Update instructions:

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

Ubuntu 26.04 LTS
  openjdk-17-crac-jdk             17.0.20+8-0ubuntu1~26.04
  openjdk-17-crac-jdk-headless    17.0.20+8-0ubuntu1~26.04
  openjdk-17-crac-jre             17.0.20+8-0ubuntu1~26.04
  openjdk-17-crac-jre-headless    17.0.20+8-0ubuntu1~26.04
  openjdk-17-crac-jre-zero        17.0.20+8-0ubuntu1~26.04

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart any running Java
applications to make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-8693-1
  CVE-2026-41254, CVE-2026-46917, CVE-2026-46968, CVE-2026-47010,
  CVE-2026-47021, CVE-2026-47027, CVE-2026-47059, CVE-2026-47063,
  CVE-2026-60147

Package Information:
  https://launchpad.net/ubuntu/+source/openjdk-17-crac/17.0...


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