Out-of-bounds Write Affecting java-21-openjdk-jmods-slowdebug package, versions <1:21.0.11.0.10-1.el9


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

Social Trends
EPSS
0.62% (46th percentile)

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  • Snyk IDSNYK-RHEL9-JAVA21OPENJDKJMODSSLOWDEBUG-18239196
  • published23 Jul 2026
  • disclosed18 Mar 2026

Introduced: 18 Mar 2026

CVE-2026-26740  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade RHEL:9 java-21-openjdk-jmods-slowdebug to version 1:21.0.11.0.10-1.el9 or higher.
This issue was patched in RHSA-2026:9689.

NVD Description

Note: Versions mentioned in the description apply only to the upstream java-21-openjdk-jmods-slowdebug package and not the java-21-openjdk-jmods-slowdebug package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

Buffer Overflow vulnerability in giflib v.5.2.2 allows a remote attacker to cause a denial of service via the EGifGCBToExtension overwriting an existing Graphic Control Extension block without validating its allocated size.

CVSS Base Scores

version 3.1