Bug 2426226 (CVE-2022-50865) - CVE-2022-50865 kernel: tcp: fix a signed-integer-overflow bug in tcp_add_backlog()
Summary: CVE-2022-50865 kernel: tcp: fix a signed-integer-overflow bug in tcp_add_back...
Keywords:
Status: NEW
Alias: CVE-2022-50865
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-30 13:17 UTC by OSIDB Bzimport
Modified: 2026-02-11 17:03 UTC (History)
0 users

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

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:1661 0 None None None 2026-02-02 03:21:55 UTC
Red Hat Product Errata RHSA-2026:1662 0 None None None 2026-02-02 03:53:31 UTC
Red Hat Product Errata RHSA-2026:1909 0 None None None 2026-02-04 18:28:42 UTC
Red Hat Product Errata RHSA-2026:1946 0 None None None 2026-02-04 18:51:15 UTC
Red Hat Product Errata RHSA-2026:2490 0 None None None 2026-02-11 00:16:14 UTC
Red Hat Product Errata RHSA-2026:2573 0 None None None 2026-02-11 16:30:49 UTC
Red Hat Product Errata RHSA-2026:2577 0 None None None 2026-02-11 17:03:54 UTC

Description OSIDB Bzimport 2025-12-30 13:17:47 UTC 
In the Linux kernel, the following vulnerability has been resolved:

tcp: fix a signed-integer-overflow bug in tcp_add_backlog()

The type of sk_rcvbuf and sk_sndbuf in struct sock is int, and
in tcp_add_backlog(), the variable limit is caculated by adding
sk_rcvbuf, sk_sndbuf and 64 * 1024, it may exceed the max value
of int and overflow. This patch reduces the limit budget by
halving the sndbuf to solve this issue since ACK packets are much
smaller than the payload.
Comment 1 Alexander B 2025-12-30 23:57:26 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025123049-CVE-2022-50865-281e@gregkh/T
Comment 5 errata-xmlrpc 2026-02-02 03:21:54 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:1661 https://access.redhat.com/errata/RHSA-2026:1661
Comment 6 errata-xmlrpc 2026-02-02 03:53:30 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:1662 https://access.redhat.com/errata/RHSA-2026:1662
Comment 8 errata-xmlrpc 2026-02-04 18:28:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:1909 https://access.redhat.com/errata/RHSA-2026:1909
Comment 9 errata-xmlrpc 2026-02-04 18:51:14 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:1946 https://access.redhat.com/errata/RHSA-2026:1946
Comment 10 errata-xmlrpc 2026-02-11 00:16:13 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 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2026:2490 https://access.redhat.com/errata/RHSA-2026:2490
Comment 11 errata-xmlrpc 2026-02-11 16:30:46 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:2573 https://access.redhat.com/errata/RHSA-2026:2573
Comment 12 errata-xmlrpc 2026-02-11 17:03:53 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:2577 https://access.redhat.com/errata/RHSA-2026:2577
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