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OpenAdvisories
High USN-7668-1 4 CVEs

openjdk-21 vulnerabilities

Published Jul 24, 2025 · Updated Jul 13, 2026

Summary

It was discovered that the 2D component of OpenJDK 21 did not properly
manage memory under certain circumstances. An attacker could possibly
use this issue to cause a denial of service or execute arbitrary code.
(CVE-2025-30749, CVE-2025-50106)

Mashroor Hasan Bhuiyan discovered that the JSSE component of OpenJDK
21 did not properly manage TLS 1.3 handshakes under certain
circumstances. An attacker could possibly use this issue to obtain
sensitive information. (CVE-2025-30754)

Martin van Wingerden and Violeta Georgieva of Broadcom discovered
that the Networking component of OpenJDK 24 did not properly
manage network connections under certain circumstances. An attacker
could possibly use this issue to obtain sensitive information.
(CVE-2025-50059)

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/2025-07-15

Fixed packages 3

ReleasePackageFixed in
Ubuntu · 22.04 LTS 22.04:LTS openjdk-21 21.0.8+9~us1-0ubuntu1~22.04.1
Ubuntu · 24.04 LTS 24.04:LTS openjdk-21 21.0.8+9~us1-0ubuntu1~24.04.1
Ubuntu · Pro 20.04 LTS Pro:20.04:LTS openjdk-21 21.0.8+9~us1-0ubuntu1~20.04.1

Vulnerabilities 4

References

  • report
    https://ubuntu.com/security/CVE-2025-30749
  • report
    https://ubuntu.com/security/CVE-2025-30754
  • report
    https://ubuntu.com/security/CVE-2025-50059
  • report
    https://ubuntu.com/security/CVE-2025-50106