Bug 2467822 (CVE-2026-33811) - CVE-2026-33811 net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME
Summary: CVE-2026-33811 net: golang: Go net package: Denial of Service via long CNAME ...
Keywords:
Status: NEW
Alias: CVE-2026-33811
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-07 20:01 UTC by OSIDB Bzimport
Modified: 2026-09-09 18:27 UTC (History)
181 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-2026:22112 0 None None None 2026-06-01 01:04:30 UTC
Red Hat Product Errata RHSA-2026:22120 0 None None None 2026-06-01 00:44:00 UTC
Red Hat Product Errata RHSA-2026:22121 0 None None None 2026-06-01 01:00:49 UTC
Red Hat Product Errata RHSA-2026:34357 0 None None None 2026-07-01 18:36:14 UTC
Red Hat Product Errata RHSA-2026:34359 0 None None None 2026-07-01 19:21:09 UTC
Red Hat Product Errata RHSA-2026:35832 0 None None None 2026-07-06 03:06:07 UTC
Red Hat Product Errata RHSA-2026:36617 0 None None None 2026-07-08 09:01:16 UTC
Red Hat Product Errata RHSA-2026:36776 0 None None None 2026-07-08 16:19:57 UTC
Red Hat Product Errata RHSA-2026:36796 0 None None None 2026-07-08 15:51:00 UTC
Red Hat Product Errata RHSA-2026:38504 0 None None None 2026-07-13 08:29:04 UTC
Red Hat Product Errata RHSA-2026:39266 0 None None None 2026-07-14 13:45:05 UTC
Red Hat Product Errata RHSA-2026:39272 0 None None None 2026-07-14 14:44:47 UTC
Red Hat Product Errata RHSA-2026:39319 0 None None None 2026-07-14 15:23:01 UTC
Red Hat Product Errata RHSA-2026:39573 0 None None None 2026-07-15 00:43:11 UTC
Red Hat Product Errata RHSA-2026:39810 0 None None None 2026-07-15 09:54:31 UTC
Red Hat Product Errata RHSA-2026:41019 0 None None None 2026-07-16 14:32:27 UTC
Red Hat Product Errata RHSA-2026:42078 0 None None None 2026-07-20 15:58:54 UTC
Red Hat Product Errata RHSA-2026:42079 0 None None None 2026-07-20 16:02:17 UTC
Red Hat Product Errata RHSA-2026:42082 0 None None None 2026-07-20 16:01:13 UTC
Red Hat Product Errata RHSA-2026:42150 0 None None None 2026-07-20 19:29:10 UTC
Red Hat Product Errata RHSA-2026:42151 0 None None None 2026-07-20 19:29:52 UTC
Red Hat Product Errata RHSA-2026:42946 0 None None None 2026-07-21 19:59:15 UTC
Red Hat Product Errata RHSA-2026:48151 0 None None None 2026-07-29 19:53:17 UTC
Red Hat Product Errata RHSA-2026:49702 0 None None None 2026-08-03 15:59:31 UTC
Red Hat Product Errata RHSA-2026:49703 0 None None None 2026-08-03 16:11:12 UTC
Red Hat Product Errata RHSA-2026:49712 0 None None None 2026-08-03 17:34:00 UTC
Red Hat Product Errata RHSA-2026:50319 0 None None None 2026-08-04 17:57:30 UTC
Red Hat Product Errata RHSA-2026:50336 0 None None None 2026-08-04 18:43:57 UTC
Red Hat Product Errata RHSA-2026:51187 0 None None None 2026-08-06 18:15:45 UTC
Red Hat Product Errata RHSA-2026:53412 0 None None None 2026-08-11 12:05:00 UTC
Red Hat Product Errata RHSA-2026:53413 0 None None None 2026-08-11 11:35:01 UTC
Red Hat Product Errata RHSA-2026:53415 0 None None None 2026-08-11 12:07:11 UTC
Red Hat Product Errata RHSA-2026:54168 0 None None None 2026-08-12 05:26:22 UTC
Red Hat Product Errata RHSA-2026:54191 0 None None None 2026-08-12 07:24:28 UTC
Red Hat Product Errata RHSA-2026:54552 0 None None None 2026-08-19 15:34:57 UTC
Red Hat Product Errata RHSA-2026:54757 0 None None None 2026-08-13 23:38:34 UTC
Red Hat Product Errata RHSA-2026:56785 0 None None None 2026-08-26 09:57:38 UTC
Red Hat Product Errata RHSA-2026:56852 0 None None None 2026-08-26 15:18:06 UTC
Red Hat Product Errata RHSA-2026:56910 0 None None None 2026-08-26 15:35:48 UTC
Red Hat Product Errata RHSA-2026:57482 0 None None None 2026-08-26 15:16:15 UTC
Red Hat Product Errata RHSA-2026:57649 0 None None None 2026-08-20 18:48:20 UTC
Red Hat Product Errata RHSA-2026:60018 0 None None None 2026-09-03 09:05:44 UTC
Red Hat Product Errata RHSA-2026:61253 0 None None None 2026-08-31 04:07:19 UTC
Red Hat Product Errata RHSA-2026:61313 0 None None None 2026-08-31 07:45:31 UTC
Red Hat Product Errata RHSA-2026:65534 0 None None None 2026-09-08 17:06:03 UTC
Red Hat Product Errata RHSA-2026:65886 0 None None None 2026-09-09 10:39:48 UTC

Description OSIDB Bzimport 2026-05-07 20:01:57 UTC 
When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.
Comment 2 errata-xmlrpc 2026-06-01 00:43:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:22120 https://access.redhat.com/errata/RHSA-2026:22120
Comment 3 errata-xmlrpc 2026-06-01 01:00:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:22121 https://access.redhat.com/errata/RHSA-2026:22121
Comment 4 errata-xmlrpc 2026-06-01 01:04:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:22112 https://access.redhat.com/errata/RHSA-2026:22112
Comment 5 errata-xmlrpc 2026-07-01 18:36:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:34357 https://access.redhat.com/errata/RHSA-2026:34357
Comment 6 errata-xmlrpc 2026-07-01 19:21:00 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:34359 https://access.redhat.com/errata/RHSA-2026:34359
Comment 10 errata-xmlrpc 2026-07-06 03:05:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:35832 https://access.redhat.com/errata/RHSA-2026:35832
Comment 13 errata-xmlrpc 2026-07-08 09:01:08 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:36617 https://access.redhat.com/errata/RHSA-2026:36617
Comment 14 errata-xmlrpc 2026-07-08 15:50:51 UTC 
This issue has been addressed in the following products:

  RHEM 1.0 for RHEL 9

Via RHSA-2026:36796 https://access.redhat.com/errata/RHSA-2026:36796
Comment 15 errata-xmlrpc 2026-07-08 16:19:49 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:36776 https://access.redhat.com/errata/RHSA-2026:36776
Comment 17 errata-xmlrpc 2026-07-13 08:28:55 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:38504 https://access.redhat.com/errata/RHSA-2026:38504
Comment 18 errata-xmlrpc 2026-07-14 13:44:56 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:39266 https://access.redhat.com/errata/RHSA-2026:39266
Comment 19 errata-xmlrpc 2026-07-14 14:44:37 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:39272 https://access.redhat.com/errata/RHSA-2026:39272
Comment 20 errata-xmlrpc 2026-07-14 15:22:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:39319 https://access.redhat.com/errata/RHSA-2026:39319
Comment 21 errata-xmlrpc 2026-07-15 00:43:03 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:39573 https://access.redhat.com/errata/RHSA-2026:39573
Comment 22 errata-xmlrpc 2026-07-15 09:54:23 UTC 
This issue has been addressed in the following products:

  Red Hat OpenStack Services on OpenShift 18.0

Via RHSA-2026:39810 https://access.redhat.com/errata/RHSA-2026:39810
Comment 23 errata-xmlrpc 2026-07-16 14:32:17 UTC 
This issue has been addressed in the following products:

  RHEM 1.1 for RHEL 10
  RHEM 1.1 for RHEL 9

Via RHSA-2026:41019 https://access.redhat.com/errata/RHSA-2026:41019
Comment 26 errata-xmlrpc 2026-07-20 15:58:45 UTC 
This issue has been addressed in the following products:

  Red Hat Ansible Automation Platform 2.5 for RHEL 9
  Red Hat Ansible Automation Platform 2.5 for RHEL 8

Via RHSA-2026:42078 https://access.redhat.com/errata/RHSA-2026:42078
Comment 27 errata-xmlrpc 2026-07-20 16:01:05 UTC 
This issue has been addressed in the following products:

  Red Hat Satellite 6.16 for RHEL 8
  Red Hat Satellite 6.16 for RHEL 9

Via RHSA-2026:42082 https://access.redhat.com/errata/RHSA-2026:42082
Comment 28 errata-xmlrpc 2026-07-20 16:02:08 UTC 
This issue has been addressed in the following products:

  Red Hat Ansible Automation Platform 2.6 for RHEL 9
  Red Hat Ansible Automation Platform 2.6 for RHEL 10

Via RHSA-2026:42079 https://access.redhat.com/errata/RHSA-2026:42079
Comment 29 errata-xmlrpc 2026-07-20 19:29:01 UTC 
This issue has been addressed in the following products:

  Red Hat Satellite 6.17 for RHEL 9

Via RHSA-2026:42150 https://access.redhat.com/errata/RHSA-2026:42150
Comment 30 errata-xmlrpc 2026-07-20 19:29:44 UTC 
This issue has been addressed in the following products:

  Red Hat Satellite 6.18 for RHEL 9

Via RHSA-2026:42151 https://access.redhat.com/errata/RHSA-2026:42151
Comment 31 errata-xmlrpc 2026-07-21 19:59:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:42946 https://access.redhat.com/errata/RHSA-2026:42946
Comment 32 errata-xmlrpc 2026-07-29 19:53:09 UTC 
This issue has been addressed in the following products:

  Cryostat 4 on RHEL 9

Via RHSA-2026:48151 https://access.redhat.com/errata/RHSA-2026:48151
Comment 35 errata-xmlrpc 2026-08-03 15:59:22 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:49702 https://access.redhat.com/errata/RHSA-2026:49702
Comment 36 errata-xmlrpc 2026-08-03 16:11:04 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:49703 https://access.redhat.com/errata/RHSA-2026:49703
Comment 37 errata-xmlrpc 2026-08-03 17:33:51 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:49712 https://access.redhat.com/errata/RHSA-2026:49712
Comment 38 errata-xmlrpc 2026-08-04 17:57:16 UTC 
This issue has been addressed in the following products:

  Red Hat Ansible Automation Platform 2.5 for RHEL 9
  Red Hat Ansible Automation Platform 2.5 for RHEL 8

Via RHSA-2026:50319 https://access.redhat.com/errata/RHSA-2026:50319
Comment 39 errata-xmlrpc 2026-08-04 18:43:49 UTC 
This issue has been addressed in the following products:

  Red Hat Ansible Automation Platform 2.6 for RHEL 9
  Red Hat Ansible Automation Platform 2.6 for RHEL 10

Via RHSA-2026:50336 https://access.redhat.com/errata/RHSA-2026:50336
Comment 41 errata-xmlrpc 2026-08-06 18:15:37 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:51187 https://access.redhat.com/errata/RHSA-2026:51187
Comment 42 errata-xmlrpc 2026-08-11 11:34:53 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:53413 https://access.redhat.com/errata/RHSA-2026:53413
Comment 43 errata-xmlrpc 2026-08-11 12:04:51 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:53412 https://access.redhat.com/errata/RHSA-2026:53412
Comment 44 errata-xmlrpc 2026-08-11 12:07:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:53415 https://access.redhat.com/errata/RHSA-2026:53415
Comment 45 errata-xmlrpc 2026-08-12 05:26:13 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:54168 https://access.redhat.com/errata/RHSA-2026:54168
Comment 46 errata-xmlrpc 2026-08-12 07:24:20 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:54191 https://access.redhat.com/errata/RHSA-2026:54191
Comment 47 errata-xmlrpc 2026-08-13 23:38:25 UTC 
This issue has been addressed in the following products:

  Red Hat OpenStack Platform 16.2

Via RHSA-2026:54757 https://access.redhat.com/errata/RHSA-2026:54757
Comment 49 errata-xmlrpc 2026-08-19 15:34:48 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.19

Via RHSA-2026:54552 https://access.redhat.com/errata/RHSA-2026:54552
Comment 50 errata-xmlrpc 2026-08-20 18:48:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:57649 https://access.redhat.com/errata/RHSA-2026:57649
Comment 51 errata-xmlrpc 2026-08-26 09:57:30 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.14

Via RHSA-2026:56785 https://access.redhat.com/errata/RHSA-2026:56785
Comment 52 errata-xmlrpc 2026-08-26 15:16:06 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.18

Via RHSA-2026:57482 https://access.redhat.com/errata/RHSA-2026:57482
Comment 53 errata-xmlrpc 2026-08-26 15:17:58 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.16

Via RHSA-2026:56852 https://access.redhat.com/errata/RHSA-2026:56852
Comment 54 errata-xmlrpc 2026-08-26 15:35:39 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.15

Via RHSA-2026:56910 https://access.redhat.com/errata/RHSA-2026:56910
Comment 55 errata-xmlrpc 2026-08-31 04:07:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:61253 https://access.redhat.com/errata/RHSA-2026:61253
Comment 56 errata-xmlrpc 2026-08-31 07:45:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:61313 https://access.redhat.com/errata/RHSA-2026:61313
Comment 57 errata-xmlrpc 2026-09-03 09:05:36 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.17

Via RHSA-2026:60018 https://access.redhat.com/errata/RHSA-2026:60018
Comment 58 errata-xmlrpc 2026-09-08 17:05:53 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:65534 https://access.redhat.com/errata/RHSA-2026:65534
Comment 59 errata-xmlrpc 2026-09-09 10:39:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:65886 https://access.redhat.com/errata/RHSA-2026:65886
Note You need to log in before you can comment on or make changes to this bug.