Summary
Delve is a debugger for the Go programming language. The goal of the project is to provide a simple, full featured debugging tool for Go. Delve should be easy to invoke and easy to use. Chances are if you're using a debugger, things aren't going your way. With that in mind, Delve should stay out of your way as much as possible.
Security Fix(es):
* 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)
* crypto/x509: golang: crypto/x509: Man-in-the-middle attacks via untrusted intermediate certificates (CVE-2026-111943)
Bug Fix(es) and Enhancement(s):
* Update Delve to 1.27 [rhel-9] (JIRA:Rocky Linux-219306)
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 9
| Release | Package | Fixed in |
|---|---|---|
| Rocky Linux · 9 | delve | 0:1.27.2-2.el9_9 |
| Rocky Linux · 9 | delve | 0:1.27.2-2.el9_9 |
| Rocky Linux · 9 | delve | 0:1.27.2-2.el9_9 |
| Rocky Linux · 9 | delve-debuginfo | 0:1.27.2-2.el9_9 |
| Rocky Linux · 9 | delve-debuginfo | 0:1.27.2-2.el9_9 |
| Rocky Linux · 9 | delve-debuginfo | 0:1.27.2-2.el9_9 |
| Rocky Linux · 9 | delve-debugsource | 0:1.27.2-2.el9_9 |
| Rocky Linux · 9 | delve-debugsource | 0:1.27.2-2.el9_9 |
| Rocky Linux · 9 | delve-debugsource | 0:1.27.2-2.el9_9 |
Vulnerabilities 3
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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
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…