Bug 2517043 (CVE-2026-74469) - CVE-2026-74469 kernel: sctp: prevent peer transport count overflow
Summary: CVE-2026-74469 kernel: sctp: prevent peer transport count overflow
Keywords:
Status: NEW
Alias: CVE-2026-74469
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:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-15 12:46 UTC by OSIDB Bzimport
Modified: 2026-10-22 17:38 UTC (History)
17 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-2026:71565 0 None None None 2026-09-24 10:34:29 UTC
Red Hat Product Errata RHSA-2026:71569 0 None None None 2026-09-24 13:43:25 UTC
Red Hat Product Errata RHSA-2026:71592 0 None None None 2026-09-24 11:51:08 UTC
Red Hat Product Errata RHSA-2026:71594 0 None None None 2026-09-24 12:42:17 UTC
Red Hat Product Errata RHSA-2026:71599 0 None None None 2026-09-24 14:17:56 UTC
Red Hat Product Errata RHSA-2026:71601 0 None None None 2026-09-24 13:46:40 UTC
Red Hat Product Errata RHSA-2026:71606 0 None None None 2026-09-24 12:54:46 UTC
Red Hat Product Errata RHSA-2026:71631 0 None None None 2026-09-24 18:48:06 UTC
Red Hat Product Errata RHSA-2026:71657 0 None None None 2026-09-24 16:16:55 UTC
Red Hat Product Errata RHSA-2026:71687 0 None None None 2026-09-24 22:30:39 UTC
Red Hat Product Errata RHSA-2026:73788 0 None None None 2026-09-30 07:46:27 UTC
Red Hat Product Errata RHSA-2026:74377 0 None None None 2026-10-06 18:56:30 UTC
Red Hat Product Errata RHSA-2026:74379 0 None None None 2026-10-06 12:32:51 UTC
Red Hat Product Errata RHSA-2026:74433 0 None None None 2026-10-07 10:24:45 UTC
Red Hat Product Errata RHSA-2026:77315 0 None None None 2026-10-15 13:02:25 UTC
Red Hat Product Errata RHSA-2026:77320 0 None None None 2026-10-15 13:53:27 UTC
Red Hat Product Errata RHSA-2026:77548 0 None None None 2026-10-15 18:42:28 UTC
Red Hat Product Errata RHSA-2026:77612 0 None None None 2026-10-15 18:54:16 UTC
Red Hat Product Errata RHSA-2026:79035 0 None None None 2026-10-15 08:03:04 UTC
Red Hat Product Errata RHSA-2026:82782 0 None None None 2026-10-22 17:38:49 UTC
Red Hat Product Errata RHSA-2026:82811 0 None None None 2026-10-22 16:26:46 UTC

Description OSIDB Bzimport 2026-08-15 12:46:25 UTC 
In the Linux kernel, the following vulnerability has been resolved:

sctp: prevent peer transport count overflow

sctp_assoc_add_peer() increments the association's 16-bit transport_count
for every new unique peer. Adding the 65,536th transport wraps the count to
zero.

SCTP sock_diag uses transport_count to reserve the INET_DIAG_PEERS payload,
then copies one sockaddr_storage for every entry in transport_addr_list.
After the wrap, a diagnostic dump reserves an empty payload and writes
8 MiB of peer addresses past the skb tail.

Reject a new unique peer when transport_count has reached U16_MAX. Perform
the check after the existing-peer lookup so a duplicate address continues
to return its existing transport at the limit.
Comment 1 Mauro Matteo Cascella 2026-08-19 18:10:36 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081534-CVE-2026-74469-d3f3@gregkh/T
Comment 11 Jon Orris 2026-09-24 10:34:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:71565 https://access.redhat.com/errata/RHSA-2026:71565
Comment 12 Jon Orris 2026-09-24 11:51:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:71592 https://access.redhat.com/errata/RHSA-2026:71592
Comment 13 Jon Orris 2026-09-24 12:42:15 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:71594 https://access.redhat.com/errata/RHSA-2026:71594
Comment 14 Jon Orris 2026-09-24 12:54:44 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:71606 https://access.redhat.com/errata/RHSA-2026:71606
Comment 15 Jon Orris 2026-09-24 13:43:23 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:71569 https://access.redhat.com/errata/RHSA-2026:71569
Comment 16 Jon Orris 2026-09-24 13:46:38 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:71601 https://access.redhat.com/errata/RHSA-2026:71601
Comment 17 Jon Orris 2026-09-24 14:17:54 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:71599 https://access.redhat.com/errata/RHSA-2026:71599
Comment 18 Jon Orris 2026-09-24 16:16:53 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:71657 https://access.redhat.com/errata/RHSA-2026:71657
Comment 19 Jon Orris 2026-09-24 18:48:04 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:71631 https://access.redhat.com/errata/RHSA-2026:71631
Comment 20 Jon Orris 2026-09-24 22:30:37 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:71687 https://access.redhat.com/errata/RHSA-2026:71687
Comment 21 Jon Orris 2026-09-30 07:46:25 UTC 
This issue has been addressed in the following products:

  NVIDIA for RHEL 10

Via RHSA-2026:73788 https://access.redhat.com/errata/RHSA-2026:73788
Comment 22 Jon Orris 2026-10-06 12:32:49 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.21

Via RHSA-2026:74379 https://access.redhat.com/errata/RHSA-2026:74379
Comment 23 Jon Orris 2026-10-06 18:56:29 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.20

Via RHSA-2026:74377 https://access.redhat.com/errata/RHSA-2026:74377
Comment 24 Jon Orris 2026-10-07 10:24:44 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.19

Via RHSA-2026:74433 https://access.redhat.com/errata/RHSA-2026:74433
Comment 25 Jon Orris 2026-10-15 08:03:02 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.18

Via RHSA-2026:79035 https://access.redhat.com/errata/RHSA-2026:79035
Comment 26 Jon Orris 2026-10-15 13:02:24 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.12

Via RHSA-2026:77315 https://access.redhat.com/errata/RHSA-2026:77315
Comment 27 Jon Orris 2026-10-15 13:53:26 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.13

Via RHSA-2026:77320 https://access.redhat.com/errata/RHSA-2026:77320
Comment 28 Jon Orris 2026-10-15 18:42:26 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.17

Via RHSA-2026:77548 https://access.redhat.com/errata/RHSA-2026:77548
Comment 29 Jon Orris 2026-10-15 18:54:14 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.16

Via RHSA-2026:77612 https://access.redhat.com/errata/RHSA-2026:77612
Comment 30 Jon Orris 2026-10-22 16:26:44 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.15

Via RHSA-2026:82811 https://access.redhat.com/errata/RHSA-2026:82811
Comment 31 Jon Orris 2026-10-22 17:38:47 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.14

Via RHSA-2026:82782 https://access.redhat.com/errata/RHSA-2026:82782
Note You need to log in before you can comment on or make changes to this bug.