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High7.5Red Hat Linux

High [CVE-2026-42154] Denial of Service via uncontrolled memory allocation in remote read endpoint

This high-severity Red Hat Linux advisory covers CVE-2026-42154 affecting RHEM 1.0 for RHEL 9, Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux AppStream (v. 9).

CVE-2026-42154 Published May 4, 2026
CVE-2026-42154
Affected products & platforms
Red Hat LinuxUnclassified
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Summary

Denial of Service via uncontrolled memory allocation in remote read endpoint. Red Hat rates this important (CVSS 7.5).

Weakness: CWE-770. Affected package(s): opentelemetry-collector, jaeger-main, rhacm2/prometheus-rhel9:1782374537, opentelemetry-collector-main, openshift-logging/logging-loki-rhel9:1782405469, opentelemetry-collector-contrib-main.

Resolved in Red Hat advisory RHSA-2026:29770 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: RHEM 1.0 for RHEL 9; Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 9); Logging Subsystem for Red Hat OpenShift 6.4; and 45 more.

Affected versions
  • opentelemetry-collector-0:0.152.1-1.el9_8
  • jaeger-main-2.19.0-1.hum1
  • rhacm2/prometheus-rhel9:1782374537
  • opentelemetry-collector-main-0.153.0-1.hum1
  • opentelemetry-collector-0:0.152.1-1.el10_2
  • openshift-logging/logging-loki-rhel9:1782405469
  • opentelemetry-collector-contrib-main-0.155.0-0.1.hum1

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • RHSA-2026:29770

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Update the affected package(s) to the fixed version shipped in RHSA-2026:29770 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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