Summary
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):
* encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal (CVE-2026-33818)
* net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution (CVE-2026-56860)
* net/http: golang: Go net/http: Unencrypted HTTP/2 connections vulnerable to Denial of Service (CVE-2026-56853)
* html/template: golang: Go html/template: Cross-Site Scripting via pathological input (CVE-2026-56858)
* crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages (CVE-2026-56862)
* crypto/tls: golang: crypto/tls: Denial of Service via multiple ECH outer extension references (CVE-2026-97031)
* net/http: net/http/internal/http2: golang.org/x/net/http2: net/http: Denial of Service via excessive HTTP/2 SETTINGS frames (CVE-2026-78669)
* crypto/x509: golang: crypto/x509: Man-in-the-middle attacks via untrusted intermediate certificates (CVE-2026-111943)
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.
Fixed packages 12
| Release | Package | Fixed in |
|---|---|---|
| Rocky Linux · 9 | grafana-pcp | 0:5.1.1-17.el9_9.3 |
| Rocky Linux · 9 | grafana-pcp | 0:5.1.1-17.el9_9.3 |
| Rocky Linux · 9 | grafana-pcp | 0:5.1.1-17.el9_9.3 |
| Rocky Linux · 9 | grafana-pcp | 0:5.1.1-17.el9_9.3 |
| Rocky Linux · 9 | grafana-pcp-debuginfo | 0:5.1.1-17.el9_9.3 |
| Rocky Linux · 9 | grafana-pcp-debuginfo | 0:5.1.1-17.el9_9.3 |
| Rocky Linux · 9 | grafana-pcp-debuginfo | 0:5.1.1-17.el9_9.3 |
| Rocky Linux · 9 | grafana-pcp-debuginfo | 0:5.1.1-17.el9_9.3 |
| Rocky Linux · 9 | grafana-pcp-debugsource | 0:5.1.1-17.el9_9.3 |
| Rocky Linux · 9 | grafana-pcp-debugsource | 0:5.1.1-17.el9_9.3 |
| Rocky Linux · 9 | grafana-pcp-debugsource | 0:5.1.1-17.el9_9.3 |
| Rocky Linux · 9 | grafana-pcp-debugsource | 0:5.1.1-17.el9_9.3 |
Vulnerabilities 8
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High 7.5
Enforce maximum recursion depth in encoding/asn1
Enforce a recursion limit in Unmarshal to prevent stack exhaustion when parsing deeply-nested, recursive structures.
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High 7.5
Apply ReadHeaderTimeout when doing unencrypted HTTP/2 check in net/http
When a server is configured to support unencrypted HTTP/2, it reads a few bytes from each new connection to see if they contain the HTTP/2 client preface. ReadHeaderTimeout is unexpectedly not being applied when doing this.
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High 7.5
Limit handshake messages we are willing to accept post-handshake in crypto/tls
Handshake messages, such as KeyUpdate, are always considered as state-advancing, regardless of whether a handshake has been completed or not. As a result, a malicious client can keep sending KeyUpdate messages to force the server to keep performing key deriva…
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High 7.5
Excessive CPU consumption from repeated initial window changes in net/http
A malicious HTTP/2 peer can cause excessive CPU consumption in the client or server by opening a large number of streams and then sending many small SETTINGS frames containing SETTINGS_INITIAL_WINDOW_SIZE values.
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High 7.5
Reject malformed ECH outer extension references in crypto/tls
Multiple ECH outer extension references are not permitted under RFC 9849; previously, a client could send a well-crafted packet that could trigger memory exhaustion in the server process by specifying multiple references. We now reject these as malformed and …
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Medium 6.8CVE-2026-111943 Public exploit
Distrust compromised intermediate certificates in crypto/x509
On most platforms, Go uses the given system root certificates. However, in some narrower cases, the system trust stores may not be updated without further action. To defend against the narrower set of cases that may remain affected, a denylist was added in cr…
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Medium 6.1
Fix Javascript regexp context tracking in html/template
Previously, pathological inputs could close an unescaped '/' early, allowing for attack-controlled data to inject arbitrary content, potentially leading to XSS.
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Medium 5.9
Avoid quadratic complexity in resolvePath in net/url
Previously, resolving relative paths containing parent directory ('..') segments performed string conversions and buffer rewrites on each step, resulting in quadratic time complexity and high memory allocation overhead. Now, path resolution operates on a byte…
References
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2515815
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2515820
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2515827
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2515838
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2515839
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2548336
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2548344
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2556068
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advisory
https://access.redhat.com/errata/RHSA-2026:98479