This security update addresses three vulnerabilities in the Grafana Performance Co-Pilot plugin due to flaws in its underlying Go runtime: a symlink traversal issue (CVE-2026-32282, CVSS 6.4 MEDIUM) and two denial-of-service flaws in TLS 1.3 and certificate chain building (CVE-2026-32283 & CVE-2026-32280, both CVSS 7.5 HIGH). The affected Go versions are below 1.25.9 or between 1.26.0 and 1.26.2. The fix requires updating the grafana-pcp package, which incorporates the patched Go runtime versions 1.25.9 or 1.26.2.
Red Hat Product Errata RHSA-2026:19839 - Security Advisory Issued: 2026-05-20 Updated: 2026-05-20 RHSA-2026:19839 - 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: internal/syscall/unix: Root.Chmod can follow symlinks out of the root (CVE-2026-32282) crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages (CVE-2026-32283) crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280) 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 - 2456336 - CVE-2026-32282 golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root BZ - 2456338 - CVE-2026-32283 crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages BZ - 2456339 - CVE-2026-32280 crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building CVEs CVE-2026-32280 CVE-2026-32282 CVE-2026-32283 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-5.1.1-14.el9_6.src.rpm SHA-256: e0e1f1c2579a4bef0286dad6ccc8dd56acd5566dd5546355c72392d14aba71af x86_64 grafana-pcp-5.1.1-14.el9_6.x86_64.rpm SHA-256: eb5aaadbc30bcf798cbcd6c77f57379c57dd2be9411f00e4b062a57bef00d622 grafana-pcp-debuginfo-5.1.1-14.el9_6.x86_64.rpm SHA-256: 89ab22067851fb57bdf0cdc8c074e0eea741ab8855fb99fe40fa473926d29ea5 grafana-pcp-debugsource-5.1.1-14.el9_6.x86_64.rpm SHA-256: cd9c579e4b08847f1ed6a38835179f575f0fc055a5e153b66342c839be56e8ec Red Hat Enterprise Linux Server - AUS 9.6 SRPM grafana-pcp-5.1.1-14.el9_6.src.rpm SHA-256: e0e1f1c2579a4bef0286dad6ccc8dd56acd5566dd5546355c72392d14aba71af x86_64 grafana-pcp-5.1.1-14.el9_6.x86_64.rpm SHA-256: eb5aaadbc30bcf798cbcd6c77f57379c57dd2be9411f00e4b062a57bef00d622 grafana-pcp-debuginfo-5.1.1-14.el9_6.x86_64.rpm SHA-256: 89ab22067851fb57bdf0cdc8c074e0eea741ab8855fb99fe40fa473926d29ea5 grafana-pcp-debugsource-5.1.1-14.el9_6.x86_64.rpm SHA-256: cd9c579e4b08847f1ed6a38835179f575f0fc055a5e153b66342c839be56e8ec Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.6 SRPM grafana-pcp-5.1.1-14.el9_6.src.rpm SHA-256: e0e1f1c2579a4bef0286dad6ccc8dd56acd5566dd5546355c72392d14aba71af s390x grafana-pcp-5.1.1-14.el9_6.s390x.rpm SHA-256: 4e33dc1bf7af31f6787c23eb5446dcf46fc9f4406df75cb9eeca1e5624299f85 grafana-pcp-debuginfo-5.1.1-14.el9_6.s390x.rpm SHA-256: 117c3c4d90cf5158ce3a10d98f13383388cf51f24fee9420470f1c8aa5bdc8d0 grafana-pcp-debugsource-5.1.1-14.el9_6.s390x.rpm SHA-256: ef0a9938f25b23dfba1f490ec47934dee2939978c4d84706c03bb6471a5891d5 Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.6 SRPM grafana-pcp-5.1.1-14.el9_6.src.rpm SHA-256: e0e1f1c2579a4bef0286dad6ccc8dd56acd5566dd5546355c72392d14aba71af ppc64le grafana-pcp-5.1.1-14.el9_6.ppc64le.rpm SHA-256: ad89b53af1d01d55938ac89cd180a8bcba552a069d78e06e8f818ce5ca201534 grafana-pcp-debuginfo-5.1.1-14.el9_6.ppc64le.rpm SHA-256: 5e66c9090b0925e442017ad319e790d1df390f7ce2463ca315ab49f9f1d4b0bb grafana-pcp-debugsource-5.1.1-14.el9_6.ppc64le.rpm SHA-256: 9121f48e635922f96f37421d7206d8ef98b3cda0b49bd94dcfc3ca56aec88a94 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.6 SRPM grafana-pcp-5.1.1-14.el9_6.src.rpm SHA-256: e0e1f1c2579a4bef0286dad6ccc8dd56acd5566dd5546355c72392d14aba71af aarch64 grafana-pcp-5.1.1-14.el9_6.aarch64.rpm SHA-256: 1602875f52fdab43f78ec649e3549afa2f7c5651d866f5bc65769cdccd169acc grafana-pcp-debuginfo-5.1.1-14.el9_6.aarch64.rpm SHA-256: 43898f78b0e5a92d2d95824cc97ff3bcc36c451d4e1a756c567d788722e79e14 grafana-pcp-debugsource-5.1.1-14.el9_6.aarch64.rpm SHA-256: 99751841ad130f42d6ef89ead3bb8b9325a3347df862621389d67668c343c444 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.6 SRPM grafana-pcp-5.1.1-14.el9_6.src.rpm SHA-256: e0e1f1c2579a4bef0286dad6ccc8dd56acd5566dd5546355c72392d14aba71af ppc64le grafana-pcp-5.1.1-14.el9_6.ppc64le.rpm SHA-256: ad89b53af1d01d55938ac89cd180a8bcba552a069d78e06e8f818ce5ca201534 grafana-pcp-debuginfo-5.1.1-14.el9_6.ppc64le.rpm SHA-256: 5e66c9090b0925e442017ad319e790d1df390f7ce2463ca315ab49f9f1d4b0bb grafana-pcp-debugsource-5.1.1-14.el9_6.ppc64le.rpm SHA-256: 9121f48e635922f96f37421d7206d8ef98b3cda0b49bd94dcfc3ca56aec88a94 Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.6 SRPM grafana-pcp-5.1.1-14.el9_6.src.rpm SHA-256: e0e1f1c2579a4bef0286dad6ccc8dd56acd5566dd5546355c72392d14aba71af x86_64 grafana-pcp-5.1.1-14.el9_6.x86_64.rpm SHA-256: eb5aaadbc30bcf798cbcd6c77f57379c57dd2be9411f00e4b062a57bef00d622 grafana-pcp-debuginfo-5.1.1-14.el9_6.x86_64.rpm SHA-256: 89ab22067851fb57bdf0cdc8c074e0eea741ab8855fb99fe40fa473926d29ea5 grafana-pcp-debugsource-5.1.1-14.el9_6.x86_64.rpm SHA-256: cd9c579e4b08847f1ed6a38835179f575f0fc055a5e153b66342c839be56e8ec Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.6 SRPM grafana-pcp-5.1.1-14.el9_6.src.rpm SHA-256: e0e1f1c2579a4bef0286dad6ccc8dd56acd5566dd5546355c72392d14aba71af aarch64 grafana-pcp-5.1.1-14.el9_6.aarch64.rpm SHA-256: 1602875f52fdab43f78ec649e3549afa2f7c5651d866f5bc65769cdccd169acc grafana-pcp-debuginfo-5.1.1-14.el9_6.aarch64.rpm SHA-256: 43898f78b0e5a92d2d95824cc97ff3bcc36c451d4e1a756c567d788722e79e14 grafana-pcp-debugsource-5.1.1-14.el9_6.aarch64.rpm SHA-256: 99751841ad130f42d6ef89ead3bb8b9325a3347df862621389d67668c343c444 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.6 SRPM grafana-pcp-5.1.1-14.el9_6.src.rpm SHA-256: e0e1f1c2579a4bef0286dad6ccc8dd56acd5566dd5546355c72392d14aba71af s390x grafana-pcp-5.1.1-14.el9_6.s390x.rpm SHA-256: 4e33dc1bf7af31f6787c23eb5446dcf46fc9f4406df75cb9eeca1e5624299f85 grafana-pcp-debuginfo-5.1.1-14.el9_6.s390x.rpm SHA-256: 117c3c4d90cf5158ce3a10d98f13383388cf51f24fee9420470f1c8aa5bdc8d0 grafana-pcp-debugsource-5.1.1-14.el9_6.s390x.rpm SHA-256: ef0a9938f25b23dfba1f490ec47934dee2939978c4d84706c03bb6471a5891d5 Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.6 SRPM grafana-pcp-5.1.1-14.el9_6.src.rpm SHA-256: e0e1f1c2579a4bef0286dad6ccc8dd56acd5566dd5546355c72392d14aba71af x86_64 grafana-pcp-5.1.1-14.el9_6.x86_64.rpm SHA-256: eb5aaadbc30bcf798cbcd6c77f57379c57dd2be9411f00e4b062a57bef00d622 grafana-pcp-debuginfo-5.1.1-14.el9_6.x86_64.rpm SHA-256: 89ab22067851fb57bdf0cdc8c074e0eea741ab8855fb99fe40fa473926d29ea5 grafana-pcp-debugsource-5.1.1-14.el9_6.x86_64.rpm SHA-256: cd9c579e4b08847f1ed6a38835179f575f0fc055a5e153b66342c839be56e8ec Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.6 SRPM grafana-pcp-5.1.1-14.el9_6.src.rpm SHA-256: e0e1f1c2579a4bef0286dad6ccc8dd56acd5566dd5546355c72392d14aba71af aarch64 grafana-pcp-5.1.1-14.el9_6.aarch64.rpm SHA-256: 1602875f52fdab43f78ec649e3549afa2f7c5651d866f5bc65769cdccd169acc grafana-pcp-debuginfo-5.1.1-14.el9_6.aarch64.rpm SHA-256: 43898f78b0e5a92d2d95824cc97ff3bcc36c451d4e1a756c567d788722e79e14 grafana-pcp-debugsource-5.1.1-14.el9_6.aarch64.rpm SHA-256: 99751841ad130f42d6ef89ead3bb8b9325a3347df862621389d67668c343c444 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.6 SRPM grafana-pcp-5.1.1-14.el9_6.src.rpm SHA-256: e0e1f1c2579a4bef0286dad6ccc8dd56acd5566dd5546355c72392d14aba71af ppc64le grafana-pcp-5.1.1-14.el9_6.ppc64le.rpm SHA-256: ad89b53af1d01d55938ac89cd180a8bcba552a069d78e06e8f818ce5ca201534 grafana-pcp-debuginfo-5.1.1-14.el9_6.ppc64le.rpm SHA-256: 5e66c9090b0925e442017ad319e790d1df390f7ce2463ca315ab49f9f1d4b0bb grafana-pcp-debugsource-5.1.1-14.el9_6.ppc64le.rpm SHA-256: 9121f48e635922f96f37421d7206d8ef98b3cda0b49bd94dcfc3ca56aec88a94 Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.6 SRPM grafana-pcp-5.1.1-14.el9_6.src.rpm SHA-256: e0e1f1c2579a4bef0286dad6ccc8dd56acd5566dd5546355c72392d14aba71