Bug 2456338 (CVE-2026-32283) - CVE-2026-32283 crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages
Summary: CVE-2026-32283 crypto/tls: golang: Go crypto/tls: Denial of Service via multi...
Keywords:
Status: NEW
Alias: CVE-2026-32283
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2457798
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-08 02:01 UTC by OSIDB Bzimport
Modified: 2026-05-06 21:10 UTC (History)
143 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:10217 0 None None None 2026-04-23 21:35:57 UTC
Red Hat Product Errata RHSA-2026:10219 0 None None None 2026-04-24 02:33:45 UTC
Red Hat Product Errata RHSA-2026:10704 0 None None None 2026-04-27 02:09:38 UTC
Red Hat Product Errata RHSA-2026:11507 0 None None None 2026-04-29 07:28:18 UTC
Red Hat Product Errata RHSA-2026:11514 0 None None None 2026-04-29 08:02:12 UTC
Red Hat Product Errata RHSA-2026:11704 0 None None None 2026-04-29 13:03:41 UTC
Red Hat Product Errata RHSA-2026:11711 0 None None None 2026-04-29 13:27:15 UTC
Red Hat Product Errata RHSA-2026:11712 0 None None None 2026-04-29 13:09:49 UTC
Red Hat Product Errata RHSA-2026:11863 0 None None None 2026-04-29 17:50:39 UTC
Red Hat Product Errata RHSA-2026:11881 0 None None None 2026-04-29 19:02:25 UTC
Red Hat Product Errata RHSA-2026:14200 0 None None None 2026-05-06 15:29:50 UTC
Red Hat Product Errata RHSA-2026:14391 0 None None None 2026-05-06 21:10:22 UTC

Description OSIDB Bzimport 2026-04-08 02:01:39 UTC 
If one side of the TLS connection sends multiple key update messages post-handshake in a single record, the connection can deadlock, causing uncontrolled consumption of resources. This can lead to a denial of service. This only affects TLS 1.3.
Comment 5 errata-xmlrpc 2026-04-23 21:35:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:10217 https://access.redhat.com/errata/RHSA-2026:10217
Comment 6 errata-xmlrpc 2026-04-24 02:33:37 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:10219 https://access.redhat.com/errata/RHSA-2026:10219
Comment 7 errata-xmlrpc 2026-04-27 02:09:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:10704 https://access.redhat.com/errata/RHSA-2026:10704
Comment 8 errata-xmlrpc 2026-04-29 07:28:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:11507 https://access.redhat.com/errata/RHSA-2026:11507
Comment 9 errata-xmlrpc 2026-04-29 08:02:04 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:11514 https://access.redhat.com/errata/RHSA-2026:11514
Comment 12 errata-xmlrpc 2026-04-29 13:03:32 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:11704 https://access.redhat.com/errata/RHSA-2026:11704
Comment 13 errata-xmlrpc 2026-04-29 13:09:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:11712 https://access.redhat.com/errata/RHSA-2026:11712
Comment 14 errata-xmlrpc 2026-04-29 13:27:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:11711 https://access.redhat.com/errata/RHSA-2026:11711
Comment 15 errata-xmlrpc 2026-04-29 17:50:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:11863 https://access.redhat.com/errata/RHSA-2026:11863
Comment 16 errata-xmlrpc 2026-04-29 19:02:15 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:11881 https://access.redhat.com/errata/RHSA-2026:11881
Comment 19 errata-xmlrpc 2026-05-06 15:29:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:14200 https://access.redhat.com/errata/RHSA-2026:14200
Comment 20 errata-xmlrpc 2026-05-06 21:10:12 UTC 
This issue has been addressed in the following products:

  Cryostat 4 on RHEL 9

Via RHSA-2026:14391 https://access.redhat.com/errata/RHSA-2026:14391
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