Red Hat Product Errata RHSA-2026:56223 - Security Advisory Issued: 2026-08-18 Updated: 2026-08-18 RHSA-2026:56223 - Security Advisory Overview Updated Packages Synopsis Important: grafana-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 grafana-pcp is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. 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 The Grafana plugin for Performance Co-Pilot includes datasources for scalable time series from pmseries and Redis, live PCP metrics and bpftrace scripts from pmdabpftrace, as well as several dashboards. Security Fix(es): golang.org/x/net/idna: golang: net/ http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing (CVE-2026-39821) 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 - Extended Update Support 9.6 x86_64 Red Hat Enterprise Linux Server - AUS 9.6 x86_64 Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.6 s390x Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.6 ppc64le Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.6 aarch64 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.6 ppc64le Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.6 x86_64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.6 aarch64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.6 s390x Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.6 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.6 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.6 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.6 s390x Fixes BZ - 2480756 - CVE-2026-39821 golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing CVEs CVE-2026-39821 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 - Extended Update Support 9.6 SRPM grafana-pcp-5.1.1-15.el9_6.src.rpm SHA-256: 0da496b908757572b6ffe4cf7f51b97c4324c4a0038711ebed0c46196871a3e5 x86_64 grafana-pcp-5.1.1-15.el9_6.x86_64.rpm SHA-256: 401e3bbeeab9733d68568111e936e034c1ec6ecd64e5917e5191fa304e2bd350 grafana-pcp-debuginfo-5.1.1-15.el9_6.x86_64.rpm SHA-256: 463730f7c0b084ab9a52de0880106e1b74058d3cebb9164854c1f719a1966cdd grafana-pcp-debugsource-5.1.1-15.el9_6.x86_64.rpm SHA-256: acc47df3c0a0d3063ae1ca921fbdf927c04aae679024edffc8831e9cf5c6326d Red Hat Enterprise Linux Server - AUS 9.6 SRPM grafana-pcp-5.1.1-15.el9_6.src.rpm SHA-256: 0da496b908757572b6ffe4cf7f51b97c4324c4a0038711ebed0c46196871a3e5 x86_64 grafana-pcp-5.1.1-15.el9_6.x86_64.rpm SHA-256: 401e3bbeeab9733d68568111e936e034c1ec6ecd64e5917e5191fa304e2bd350 grafana-pcp-debuginfo-5.1.1-15.el9_6.x86_64.rpm SHA-256: 463730f7c0b084ab9a52de0880106e1b74058d3cebb9164854c1f719a1966cdd grafana-pcp-debugsource-5.1.1-15.el9_6.x86_64.rpm SHA-256: acc47df3c0a0d3063ae1ca921fbdf927c04aae679024edffc8831e9cf5c6326d Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.6 SRPM grafana-pcp-5.1.1-15.el9_6.src.rpm SHA-256: 0da496b908757572b6ffe4cf7f51b97c4324c4a0038711ebed0c46196871a3e5 s390x grafana-pcp-5.1.1-15.el9_6.s390x.rpm SHA-256: 93575d94bcc87ddf1f57a459a06d20482cca2f7d5480b37db5ed73b1bebc3abc grafana-pcp-debuginfo-5.1.1-15.el9_6.s390x.rpm SHA-256: c983d320df9aba9ebf99242f782a4586d1bdd9984c20e2574282e63028fe81fc grafana-pcp-debugsource-5.1.1-15.el9_6.s390x.rpm SHA-256: d05e5cccc28160d9e8bbe4d870ae6f1dfcb7ebaf58321f15e2f83dde4370c491 Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.6 SRPM grafana-pcp-5.1.1-15.el9_6.src.rpm SHA-256: 0da496b908757572b6ffe4cf7f51b97c4324c4a0038711ebed0c46196871a3e5 ppc64le grafana-pcp-5.1.1-15.el9_6.ppc64le.rpm SHA-256: 3809953be70e8743351651719fc8d28c87ab8e7c83e7507d387f987978306f16 grafana-pcp-debuginfo-5.1.1-15.el9_6.ppc64le.rpm SHA-256: fa9abfb7031bb6e0b2abcf57e6ca267195e60abb60a84902d1c30a66ba3273ba grafana-pcp-debugsource-5.1.1-15.el9_6.ppc64le.rpm SHA-256: 681ca5c37faa37379bd013698e11e3e55b786e535989e47993e6eff2c3e17aa1 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.6 SRPM grafana-pcp-5.1.1-15.el9_6.src.rpm SHA-256: 0da496b908757572b6ffe4cf7f51b97c4324c4a0038711ebed0c46196871a3e5 aarch64 grafana-pcp-5.1.1-15.el9_6.aarch64.rpm SHA-256: 29d54dfc9c2dcbaf29ec547fcdf9500247996b4348d0cdaa6f3fa334779e6a9a grafana-pcp-debuginfo-5.1.1-15.el9_6.aarch64.rpm SHA-256: ae95f10165ce7010b180614ccfa192a5d850fd40347f9bf9425037465b82f793 grafana-pcp-debugsource-5.1.1-15.el9_6.aarch64.rpm SHA-256: 112280be3bf0ba7f8c3fc0f39eb40ce46bb36e5106cef848bb8e583e26c66ddf Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.6 SRPM grafana-pcp-5.1.1-15.el9_6.src.rpm SHA-256: 0da496b908757572b6ffe4cf7f51b97c4324c4a0038711ebed0c46196871a3e5 ppc64le grafana-pcp-5.1.1-15.el9_6.ppc64le.rpm SHA-256: 3809953be70e8743351651719fc8d28c87ab8e7c83e7507d387f987978306f16 grafana-pcp-debuginfo-5.1.1-15.el9_6.ppc64le.rpm SHA-256: fa9abfb7031bb6e0b2abcf57e6ca267195e60abb60a84902d1c30a66ba3273ba grafana-pcp-debugsource-5.1.1-15.el9_6.ppc64le.rpm SHA-256: 681ca5c37faa37379bd013698e11e3e55b786e535989e47993e6eff2c3e17aa1 Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.6 SRPM grafana-pcp-5.1.1-15.el9_6.src.rpm SHA-256: 0da496b908757572b6ffe4cf7f51b97c4324c4a0038711ebed0c46196871a3e5 x86_64 grafana-pcp-5.1.1-15.el9_6.x86_64.rpm SHA-256: 401e3bbeeab9733d68568111e936e034c1ec6ecd64e5917e5191fa304e2bd350 grafana-pcp-debuginfo-5.1.1-15.el9_6.x86_64.rpm SHA-256: 463730f7c0b084ab9a52de0880106e1b74058d3cebb9164854c1f719a1966cdd grafana-pcp-debugsource-5.1.1-15.el9_6.x86_64.rpm SHA-256: acc47df3c0a0d3063ae1ca921fbdf927c04aae679024edffc8831e9cf5c6326d Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.6 SRPM grafana-pcp-5.1.1-15.el9_6.src.rpm SHA-256: 0da496b908757572b6ffe4cf7f51b97c4324c4a0038711ebed0c46196871a3e5 aarch64 grafana-pcp-5.1.1-15.el9_6.aarch64.rpm SHA-256: 29d54dfc9c2dcbaf29ec547fcdf9500247996b4348d0cdaa6f3fa334779e6a9a grafana-pcp-debuginfo-5.1.1-15.el9_6.aarch64.rpm SHA-256: ae95f10165ce7010b180614ccfa192a5d850fd40347f9bf9425037465b82f793 grafana-pcp-debugsource-5.1.1-15.el9_6.aarch64.rpm SHA-256: 112280be3bf0ba7f8c3fc0f39eb40ce46bb36e5106cef848bb8e583e26c66ddf Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.6 SRPM grafana-pcp-5.1.1-15.el9_6.src.rpm SHA-256: 0da496b908757572b6ffe4cf7f51b97c4324c4a0038711ebed0c46196871a3e5 s390x grafana-pcp-5.1.1-15.el9_6.s390x.rpm SHA-256: 93575d94bcc87ddf1f57a459a06d20482cca2f7d5480b37db5ed73b1bebc3abc grafana-pcp-debuginfo-5.1.1-15.el9_6.s390x.rpm SHA-256: c983d320df9aba9ebf99242f782a4586d1bdd9984c20e2574282e63028fe81fc grafana-pcp-debugsource-5.1.1-15.el9_6.s390x.rpm SHA-256: d05e5cccc28160d9e8bbe4d870ae6f1dfcb7ebaf58321f15e2f83dde4370c491 Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.6 SRPM grafana-pcp-5.1.1-15.el9_6.src.rpm SHA-256: 0da496b908757572b6ffe4cf7f51b97c4324c4a0038711ebed0c46196871a3e5 x86_64 grafana-pcp-5.1.1-15.el9_6.x86_64.rpm SHA-256: 401e3bbeeab9733d68568111e936e034c1ec6ecd64e5917e5191fa304e2bd350 grafana-pcp-debuginfo-5.1.1-15.el9_6.x86_64.rpm SHA-256: 463730f7c0b084ab9a52de0880106e1b74058d3cebb9164854c1f719a1966cdd grafana-pcp-debugsource-5.1.1-15.el9_6.x86_64.rpm SHA-256: acc47df3c0a0d3063ae1ca921fbdf927c04aae679024edffc8831e9cf5c6326d Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.6 SRPM grafana-pcp-5.1.1-15.el9_6.src.rpm SHA-256: 0da496b908757572b6ffe4cf7f51b97c4324c4a0038711ebed0c46196871a3e5 aarch64 grafana-pcp-5.1.1-15.el9_6.aarch64.rpm SHA-256: 29d54dfc9c2dcbaf29ec547fcdf9500247996b4348d0cdaa6f3fa334779e6a9a grafana-pcp-debuginfo-5.1.1-15.el9_6.aarch64.rpm SHA-256: ae95f10165ce7010b180614ccfa192a5d850fd40347f9bf9425037465b82f793 grafana-pcp-debugsource-5.1.1-15.el9_6.aarch64.rpm SHA-256: 112280be3bf0ba7f8c3fc0f39eb40ce46bb36e5106cef848bb8e583e26c66ddf Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.6 SRPM grafana-pcp-5.1.1-15.el9_6.src.rpm SHA-256: 0da496b908757572b6ffe4cf7f51b97c4324c4a0038711ebed0c46196871a3e5 ppc64le grafana-pcp-5.1.1-15.el9_6.ppc64le.rpm SHA-256: 3809953be70e8743351651719fc8d28c87ab8e7c83e7507d387f987978306f16 grafana-pcp-debuginfo-5.1.1-15.el9_6.ppc64le.rpm SHA-256: fa9abfb7031bb6e0b2abcf57e6ca267195e60abb60a84902d1c30a66ba3273ba grafana-pcp-debugsource-5.1.1-15.el9_6.ppc64le.rpm SHA-256: 681ca5c37faa37379bd013698e11e3e55b786e535989e47993e6eff2c3e17aa1 Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.6 SRPM grafana-pcp-5.1.1-15.el9_6.src.rpm SHA-256: 0da496b908757572b6ffe4cf7f51b97c4324c4a0038711ebed0c46196871a3e5 s390x grafana-pcp-5.1.1-15.el9_6.s390x.rpm SHA-256: 93575d94bcc87ddf1f57a459a06d20482cca2f7d5480b37db5ed73b1bebc3abc grafana-pcp-debuginfo-5.1.1-15.el9_6.s390x.rpm SHA-256: c983d320df9aba9ebf99242f782a4586d1bdd9984c20e2574282e63028fe81fc grafana-pcp-debugsource-5.1.1-15.el9_6.s390x.rpm SHA-256: d05e5cccc28160d9e8bbe4d870ae6f1dfcb7ebaf58321f15e2f83dde4370c491 The Red Hat security contact is secalert@redhat.com