rlsa-2026:55560
Vulnerability from osv_rocky
Published
2026-08-18 00:01
Modified
2026-08-22 18:08
Summary
Important: pcp security update
Details

Performance Co-Pilot (PCP) is a suite of tools, services, and libraries for acquisition, archiving, and analysis of system-level performance measurements. Its light-weight distributed architecture makes it particularly well-suited to centralized analysis of complex systems.

Security Fix(es):

  • PCP: PCP linux_sockets PMDA: Arbitrary Command Execution via Command Injection (CVE-2026-16524)

  • PCP: PCP: Privilege escalation to root via linux_sockets PMDA vulnerability (CVE-2026-16526)

  • PCP: PCP pmproxy: Unauthenticated access to /store endpoint allows bypassing pmcd access rules (CVE-2026-16527)

  • PCP: PCP: Denial of Service due to signed integer overflow (CVE-2026-16529)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Credits
Rocky Enterprise Software Foundation
Red Hat
References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:8",
        "name": "pcp",
        "purl": "pkg:rpm/rocky-linux/pcp?distro=rocky-linux-8\u0026epoch=0"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "AppStream"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0:5.3.7-22.el8_10.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "database_specific": {
    "license": "CC-BY-4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory": "RHSA-2026:55560"
  },
  "details": "Performance Co-Pilot (PCP) is a suite of tools, services, and libraries for acquisition, archiving, and analysis of system-level performance measurements. Its light-weight distributed architecture makes it particularly well-suited to centralized analysis of complex systems.\n\nSecurity Fix(es):\n\n* PCP: PCP linux_sockets PMDA: Arbitrary Command Execution via Command Injection (CVE-2026-16524)\n\n* PCP: PCP: Privilege escalation to root via linux_sockets PMDA vulnerability (CVE-2026-16526)\n\n* PCP: PCP pmproxy: Unauthenticated access to /store endpoint allows bypassing pmcd access rules (CVE-2026-16527)\n\n* PCP: PCP: Denial of Service due to signed integer overflow (CVE-2026-16529)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "id": "RLSA-2026:55560",
  "modified": "2026-08-22T18:08:55.894214Z",
  "published": "2026-08-18T00:01:16.542753Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:55560"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2506023"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2506026"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2506031"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2506032"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:55560"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Important: pcp security update",
  "upstream": [
    "CVE-2026-16524",
    "CVE-2026-16526",
    "CVE-2026-16527",
    "CVE-2026-16529"
  ]
}



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Detection rules are retrieved from Rulezet.