Bug 2419858 (CVE-2023-53751)

Summary:	CVE-2023-53751 kernel: Linux kernel (CIFS): Use-after-free vulnerability allows data integrity compromise and denial of service
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the Linux kernel's Common Internet File System (CIFS) component. This use-after-free vulnerability occurs due to improper handling of server hostname information during connection re-establishment. An attacker on an adjacent network could exploit this, potentially leading to a compromise of data integrity or a denial of service.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2025-12-08 07:03:53 UTC

In the Linux kernel, the following vulnerability has been resolved:

cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname

TCP_Server_Info::hostname may be updated once or many times during
reconnect, so protect its access outside reconnect path as well and
then prevent any potential use-after-free bugs.

Comment 1 Alexander B 2025-12-10 09:45:21 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025120842-CVE-2023-53751-2ff2@gregkh/T

Comment 5 errata-xmlrpc 2026-01-28 19:15:04 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Advanced Update Support

Via RHSA-2026:1512 https://access.redhat.com/errata/RHSA-2026:1512

Comment 6 errata-xmlrpc 2026-02-04 09:03:47 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-2026:1886 https://access.redhat.com/errata/RHSA-2026:1886

Comment 7 errata-xmlrpc 2026-02-04 18:28:38 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:1909 https://access.redhat.com/errata/RHSA-2026:1909

Comment 8 errata-xmlrpc 2026-02-04 18:51:11 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 9 errata-xmlrpc 2026-02-11 00:16:03 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 10 errata-xmlrpc 2026-02-11 11:50:55 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-2026:2535 https://access.redhat.com/errata/RHSA-2026:2535

Comment 11 errata-xmlrpc 2026-02-11 16:30:33 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 17:04:19 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