Red Hat Product Errata RHSA-2026:55740 - Security Advisory Issued: 2026-08-17 Updated: 2026-08-17 RHSA-2026:55740 - Security Advisory Overview Updated Packages Synopsis Important: pcp security update Type/Severity Security Advisory: Important Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for pcp is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description 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. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Affected Products Red Hat Enterprise Linux for x86_64 9 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8 x86_64 Red Hat Enterprise Linux for IBM z Systems 9 s390x Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.8 s390x Red Hat Enterprise Linux for Power, little endian 9 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.8 ppc64le Red Hat Enterprise Linux for ARM 64 9 aarch64 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.8 aarch64 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.8 ppc64le Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.8 x86_64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.8 aarch64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.8 s390x Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.8 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.8 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.8 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.8 s390x Fixes BZ - 2506023 - CVE-2026-16524 PCP: PCP linux_sockets PMDA: Arbitrary Command Execution via Command Injection BZ - 2506026 - CVE-2026-16526 PCP: PCP: Privilege escalation to root via linux_sockets PMDA vulnerability BZ - 2506031 - CVE-2026-16527 PCP: PCP pmproxy: Unauthenticated access to /store endpoint allows bypassing pmcd access rules BZ - 2506032 - CVE-2026-16529 PCP: PCP: Denial of Service due to signed integer overflow CVEs CVE-2026-16524 CVE-2026-16526 CVE-2026-16527 CVE-2026-16529 References https://access.redhat.com/security/updates/classification/#important Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat Enterprise Linux for x86_64 9 SRPM pcp-6.3.7-8.el9_8.4.src.rpm SHA-256: f7920469b12ca5c97549825a6a14e0ef8465f1b4230712f3dbb1182fb88995cc x86_64 pcp-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: f50c75de4aa571712f3d92bf59a2f9834c12aabf2d93f50d3ac66aa7193ec446 pcp-conf-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 92767b776222703c78daa339ff2ecb9dda0b265cf7ebf8d08e2bebad676fd5c7 pcp-debuginfo-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: baf95ee9ed9849b3e4cc5b98caa7f55a1e25efd5f406e47b8a7a0ecb3971ad91 pcp-debugsource-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: dbc18cc434ae7396797c1c5da24556b80b3db7591ca45ef603f484b433d5862f pcp-devel-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 44872b4438cf3ce54b6f5b0c9f5aa6e4f3d81202be3e63f6e914813e01db226e pcp-devel-debuginfo-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: e7dcba296661034b2b1845c0457bdaa7d74cf667fa785b73fbd9e176c278afc1 pcp-doc-6.3.7-8.el9_8.4.noarch.rpm SHA-256: a73213aff0e89b1cd15ad050cd2cadd5d660ccf58188cda8ad80ca75f9027ae4 pcp-export-pcp2elasticsearch-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: aae6529cd428951ef12fbf7b6d060faa5ff7806e4e662ed19e7af9aa876dc15c pcp-export-pcp2graphite-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 81b7606f20d42f97bd001afaea531f167722e3c3f8ad210b7f48b3387981b0d3 pcp-export-pcp2influxdb-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: b0654add3f5ac37fc418f03a59538f9ae8a47bd06dc853615ea62fd302541ca4 pcp-export-pcp2json-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 490171ffcc6b263eb8b1fbf1575107e90b54973afe6f03f11ae128a339a145eb pcp-export-pcp2openmetrics-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: f17c5268d6c8deaa83058939dcaf91294b51b0812b0ea8ea336ca4ec07cfa337 pcp-export-pcp2spark-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 10dd7cbea5548b32320f9cc9e3f02f20d463a77e12aaecaca93721e9426a4185 pcp-export-pcp2xml-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: a419165709502ce732039a52cea4b23e5dd8fdeb8aa492284250b09daf5edafc pcp-export-pcp2zabbix-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 8afa570b345bf02350a16c48c2b09922e9da2936d72b608de86842e78dbe98b4 pcp-export-zabbix-agent-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 1f4c1b2d7b92cffd28bd341db111c23117f69bf5118975356f508187e7c33ad2 pcp-export-zabbix-agent-debuginfo-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: b0952b213a5e9005de0b28272dadcccc0f9a2a6a475bdaae078a750ad504c682 pcp-geolocate-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: ffd213c12731f7fca32e199ac03da87658851071d13013002e397104619ab04a pcp-gui-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 0c1d0557a5f2deb2f5a10cd6c67672ef8282e8fbdc11d9ffd36ce600e9d1b1f5 pcp-gui-debuginfo-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 65fd1c2ea6e9582b18341af1e8ce9f04d95e73778321864d7514747e2cd27713 pcp-import-collectl2pcp-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 863f863b15f46be8cdb480b1fa906601e407eee5c842a622a4f2dde5611fb363 pcp-import-collectl2pcp-debuginfo-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: fdc2c0541726f8feb815528435b6ed53ce77b5ec231daa67b76c316b64f31312 pcp-import-ganglia2pcp-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: f03c3544ea844132fbed4d1079931a3d56e0b5fdbb736be9e38898ff5982f43c pcp-import-iostat2pcp-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 1e86df3e2584e9f815be1c2c765ee63e0da663da6909a12d609801f485134dec pcp-import-mrtg2pcp-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 42fa31bd07eae3ab1002e9f1eeeb51e701b87f659044e87b0e85f3c3c196dd8b pcp-import-sar2pcp-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: f7c9c9afdd456fa398a7b82e51eaf688a08db6ed181b2af7c2555b4f9b598d8f pcp-libs-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 165216cefc65af6fa85ac25d1da3c3aceb366fa45720c8afbd054c210faadd75 pcp-libs-debuginfo-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 3b72e1b4689d554d8a1ba6b9c741ea8e54702c9be300bc567f3bad6f476e39ff pcp-libs-devel-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 4dbfe7aa0a5c873e35e76acc97057ef6109d825e360c383340b3d26964be6f64 pcp-pmda-activemq-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: da3f6a5abe52b89251d0dcf9603add9d64f297c8b87d49f2461d50a9b7d32a4a pcp-pmda-amdgpu-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: e5a06d474405b4239195710b04a0f259cce2dbf2b43c6e0437053679d503bdc6 pcp-pmda-amdgpu-debuginfo-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 4e6612f841d341020e5732abdec2bd0237f222bf65d02ee73a0b110b06792a7b pcp-pmda-apache-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 383ff6cdf453c63e7a09a06a9370d914ab6df93db9eb11fba051cef60f90dede pcp-pmda-apache-debuginfo-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: bb22639b870156e41476ac2af7a73e41e4f7001f1c78d7b972066b2b4cba19d4 pcp-pmda-bash-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: cc875a31102c415d75e9563f7c900eb3d317cea44eaec1cf3e0754521562e452 pcp-pmda-bash-debuginfo-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: e8265286803d9d818d223a6fb8d0b6862d0baecf5ad324f5a0864f8616ea7b3c pcp-pmda-bcc-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 52e2d5babbe53a0168e65c02abd9fc9f593a0b134d4ec4b0ca956ef689d59706 pcp-pmda-bind2-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 85917ae5545d3466c4e8f54579898d8c6cea161ca545c6c25f34d10b2d390675 pcp-pmda-bonding-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: e7dec6cc01d3a1611482d55580688e6f51f54ace62b9b3e5003c009a0a44237e pcp-pmda-bpf-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 033c057c891fa3dab3f3f9d260f9c3be184419bf989c657f6b14edc2e7060fda pcp-pmda-bpf-debuginfo-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 5ce3177781f73ce1e0b272b1ae5faf325fdaf39f7b553f040119dd8ceda59922 pcp-pmda-bpftrace-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: e08cc4c4dfc387dc8844a40f6dc35ee2bfa3595b7eca5ec982d71c8cc60cc60a pcp-pmda-cifs-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 0e42c44f8f973f8fbb6ee433473462e5549a810c092a505a5cd094da336a5161 pcp-pmda-cifs-debuginfo-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 7334bfc6b527d934fe10a2b4dfedc8b40b35454a448fc3e97c8647d0aad23e05 pcp-pmda-cisco-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 3577bb1fedacfc890a13c18a08857a174d810053f83790b80e1fa475862782c2 pcp-pmda-cisco-debuginfo-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 1b26c23b810d7454dc597e4eae5ef289daff9aa9cc2cc0dd6dd41441a7bbf7fa pcp-pmda-dbping-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: fb0914da25550ed9dc15079fc685050c5478f8c2e48c38b4ec1b1a0da71acf8f pcp-pmda-denki-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 72a1675a5126718d8ecf479fa18cbd4d9a9a1fcea1e3c9e09d643c7f1e2f8b2e pcp-pmda-denki-debuginfo-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 71341fc5a0f240269a40376713fb7123d8bd9b323b64b979b7adb29e875bf487 pcp-pmda-dm-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: eb486e1e0da343d0566cb4cf2a8847f8484d03d6b272e2e30b45b4f800d46e98 pcp-pmda-dm-debuginfo-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 9d754c2ff1ee13629c5b763a206a43e9e4032b6effd02b67059da029dedeb1bd pcp-pmda-docker-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 5267b02d932a0fa3a62554c58f31eb7ac56eecb99b906c628a05379322a8af15 pcp-pmda-docker-debuginfo-6.3.7-8.el9_8.4.x86_64.rpm SHA-256: 3