CVE-2026-39830

A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close(), resulting in a resource leak per connection. Unsolicited global responses are now discarded.
References
Link Resource
https://go.dev/cl/781640 Issue Tracking
https://go.dev/cl/781664 Issue Tracking
https://go.dev/issue/79564 Issue Tracking
https://groups.google.com/g/golang-announce/c/a082jnz-LvI Mailing List
https://pkg.go.dev/vuln/GO-2026-5017 Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:29455
https://access.redhat.com/errata/RHSA-2026:35833
https://access.redhat.com/errata/RHSA-2026:36199
https://access.redhat.com/errata/RHSA-2026:36207
https://access.redhat.com/errata/RHSA-2026:36319
https://access.redhat.com/errata/RHSA-2026:36625
https://access.redhat.com/errata/RHSA-2026:36648
https://access.redhat.com/errata/RHSA-2026:36651
https://access.redhat.com/errata/RHSA-2026:36796
https://access.redhat.com/errata/RHSA-2026:36797
https://access.redhat.com/errata/RHSA-2026:36808
https://access.redhat.com/errata/RHSA-2026:37072
https://access.redhat.com/errata/RHSA-2026:37268
https://access.redhat.com/errata/RHSA-2026:37271
https://access.redhat.com/errata/RHSA-2026:37272
https://access.redhat.com/errata/RHSA-2026:37275
https://access.redhat.com/errata/RHSA-2026:37278
https://access.redhat.com/errata/RHSA-2026:37286
https://access.redhat.com/errata/RHSA-2026:37296
https://access.redhat.com/errata/RHSA-2026:37387
https://access.redhat.com/errata/RHSA-2026:40118
https://access.redhat.com/errata/RHSA-2026:40262
https://access.redhat.com/errata/RHSA-2026:40945
https://access.redhat.com/errata/RHSA-2026:40969
https://access.redhat.com/errata/RHSA-2026:40972
https://access.redhat.com/errata/RHSA-2026:40974
https://access.redhat.com/errata/RHSA-2026:41019
https://access.redhat.com/errata/RHSA-2026:41031
https://access.redhat.com/errata/RHSA-2026:41036
https://access.redhat.com/errata/RHSA-2026:41066
https://access.redhat.com/errata/RHSA-2026:42146
https://access.redhat.com/security/cve/CVE-2026-39830
https://bugzilla.redhat.com/show_bug.cgi?id=2480684
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39830.json
Configurations

Configuration 1 (hide)

cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:*

History

21 Jul 2026, 12:18

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:42146 -

17 Jul 2026, 13:18

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:40945 -
  • () https://access.redhat.com/errata/RHSA-2026:40972 -
  • () https://access.redhat.com/errata/RHSA-2026:41019 -
  • () https://access.redhat.com/errata/RHSA-2026:41031 -
  • () https://access.redhat.com/errata/RHSA-2026:41036 -
  • () https://access.redhat.com/errata/RHSA-2026:41066 -

16 Jul 2026, 12:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:40118 -
  • () https://access.redhat.com/errata/RHSA-2026:40262 -
  • () https://access.redhat.com/errata/RHSA-2026:40969 -
  • () https://access.redhat.com/errata/RHSA-2026:40974 -

10 Jul 2026, 12:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:37272 -
  • () https://access.redhat.com/errata/RHSA-2026:37275 -
  • () https://access.redhat.com/errata/RHSA-2026:37278 -
  • () https://access.redhat.com/errata/RHSA-2026:37286 -
  • () https://access.redhat.com/errata/RHSA-2026:37296 -
  • () https://access.redhat.com/errata/RHSA-2026:37387 -

09 Jul 2026, 13:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:36651 -
  • () https://access.redhat.com/errata/RHSA-2026:36796 -
  • () https://access.redhat.com/errata/RHSA-2026:36797 -
  • () https://access.redhat.com/errata/RHSA-2026:36808 -
  • () https://access.redhat.com/errata/RHSA-2026:37072 -
  • () https://access.redhat.com/errata/RHSA-2026:37268 -
  • () https://access.redhat.com/errata/RHSA-2026:37271 -

08 Jul 2026, 13:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:36199 -
  • () https://access.redhat.com/errata/RHSA-2026:36207 -
  • () https://access.redhat.com/errata/RHSA-2026:36319 -
  • () https://access.redhat.com/errata/RHSA-2026:36625 -
  • () https://access.redhat.com/errata/RHSA-2026:36648 -

06 Jul 2026, 13:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:35833 -

30 Jun 2026, 03:19

Type Values Removed Values Added
CWE CWE-772
References
  • () https://access.redhat.com/errata/RHSA-2026:29455 -
  • () https://access.redhat.com/security/cve/CVE-2026-39830 -
  • () https://bugzilla.redhat.com/show_bug.cgi?id=2480684 -
  • () https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39830.json -

02 Jun 2026, 16:33

Type Values Removed Values Added
First Time Golang crypto
Golang
CPE cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:*
CWE CWE-119
References () https://go.dev/cl/781640 - () https://go.dev/cl/781640 - Issue Tracking
References () https://go.dev/cl/781664 - () https://go.dev/cl/781664 - Issue Tracking
References () https://go.dev/issue/79564 - () https://go.dev/issue/79564 - Issue Tracking
References () https://groups.google.com/g/golang-announce/c/a082jnz-LvI - () https://groups.google.com/g/golang-announce/c/a082jnz-LvI - Mailing List
References () https://pkg.go.dev/vuln/GO-2026-5017 - () https://pkg.go.dev/vuln/GO-2026-5017 - Vendor Advisory

22 May 2026, 19:17

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 9.1

22 May 2026, 04:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-05-22 04:16

Updated : 2026-07-21 12:18


NVD link : CVE-2026-39830

Mitre link : CVE-2026-39830

CVE.ORG link : CVE-2026-39830


JSON object : View

Products Affected

golang

  • crypto
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-772

Missing Release of Resource after Effective Lifetime