Low [CVE-2026-14683] Denial of Service via uncontrolled memory allocation
This low-severity Red Hat Linux advisory covers CVE-2026-14683 affecting Red Hat Hardened Images, Red Hat Ansible Automation Platform 2, Red Hat Enterprise Linux 8.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published Record updated
Summary
A vulnerability was detected in HdrHistogram up to 2.2.2. Affected by this issue is the function org.
AbstractHistogram.decodeFromCompressedByteBuffer of the file src/main/java/org/HdrHistogram/AbstractHistogram.java. The manipulation of the argument lengthOfCompressedContents results in uncontrolled memory allocation.
The attack needs to be approached locally. The exploit is now public and may be used.
It is still unclear if this vulnerability genuinely exists. This issue is disputed due to the potential lack of crossing of security boundaries and the pre-requisites for a successful attack.
A local attacker can exploit a vulnerability in the `decodeFromCompressedByteBuffer` function by manipulating the `lengthOfCompressedContents` argument. Low impact.
This issue requires local access and results in resource exhaustion, not arbitrary code execution or data compromise. Red Hat severity: Low — CVSS 3.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L).
Weakness: CWE-770. Affected Red Hat products: Red Hat Hardened Images; Red Hat Ansible Automation Platform 2; Red Hat Enterprise Linux 8; Red Hat OpenShift AI (RHOAI).
Red Hat lists Logging Subsystem for Red Hat OpenShift; OpenShift Lightspeed; OpenShift Service Mesh 3; Red Hat OpenShift AI (RHOAI); Red Hat OpenShift Container Platform 4; Red Hat OpenShift Update Service as not affected.
Is CVE-2026-14683 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2026-14683 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2026-14683?
Upgrade to a fixed release named by Red Hat:
- netavark-main-2.0.0-1.hum1
- rust-main-1.96.1-1.hum1
- RHSA-2026:26989
- RHSA-2026:34975
Confirm against the vendor advisory before you patch.
- 2.2.2
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
- netavark-main-2.0.0-1.hum1
- rust-main-1.96.1-1.hum1
- RHSA-2026:26989
- RHSA-2026:34975
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
Mitigation
Upgrade to a fixed release: netavark-main-2.0.0-1.hum1, rust-main-1.96.1-1.hum1, RHSA-2026:26989, RHSA-2026:34975. That is the remediation for this advisory.
The vendor advisory may list interim mitigations or workarounds not captured here. Review it before change work.
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
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