RHSA-2026:97556MediumCVSS 6.5

Red Hat Security Advisory: pcp security, bug fix, and enhancement update

Published
November 10, 2026
Last Modified
November 10, 2026

🔗 CVE IDs covered (1)

CVE-2026-16530 →

📋 Description

CVE-2026-16530 — PCP: PCP: Remote denial of service and information leakage

🎯 Affected products200

  • Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-0:6.3.7-13.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-0:6.3.7-13.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-0:6.3.7-13.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-0:6.3.7-13.el9.src as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-0:6.3.7-13.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-conf-0:6.3.7-13.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-conf-0:6.3.7-13.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-conf-0:6.3.7-13.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-conf-0:6.3.7-13.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-debuginfo-0:6.3.7-13.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-debuginfo-0:6.3.7-13.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-debuginfo-0:6.3.7-13.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-debuginfo-0:6.3.7-13.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-debugsource-0:6.3.7-13.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-debugsource-0:6.3.7-13.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-debugsource-0:6.3.7-13.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-debugsource-0:6.3.7-13.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-devel-0:6.3.7-13.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-devel-0:6.3.7-13.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-devel-0:6.3.7-13.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-devel-0:6.3.7-13.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-devel-debuginfo-0:6.3.7-13.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-devel-debuginfo-0:6.3.7-13.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-devel-debuginfo-0:6.3.7-13.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-devel-debuginfo-0:6.3.7-13.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-doc-0:6.3.7-13.el9.noarch as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-export-pcp2elasticsearch-0:6.3.7-13.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-export-pcp2elasticsearch-0:6.3.7-13.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • pcp-export-pcp2elasticsearch-0:6.3.7-13.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • +170 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: To mitigate this issue, restrict network access to the `pmproxy` service on TCP port 44322 using firewall rules. Alternatively, if the `pmproxy` service is not required, it can be disabled to prevent exploitation. Example to disable `pmproxy`: `sudo systemctl stop pmproxy` `sudo systemctl disable pmproxy` Note that disabling `pmproxy` may impact functionality that relies on it. A service reload or restart may be required for changes to take effect.

🔗 References (6)