Bug 2383513 (CVE-2025-38461)

Summary:	CVE-2025-38461 kernel: vsock: Fix transport_* TOCTOU
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	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2025-07-25 16:03:38 UTC

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

vsock: Fix transport_* TOCTOU

Transport assignment may race with module unload. Protect new_transport
from becoming a stale pointer.

This also takes care of an insecure call in vsock_use_local_transport();
add a lockdep assert.

BUG: unable to handle page fault for address: fffffbfff8056000
Oops: Oops: 0000 [#1] SMP KASAN
RIP: 0010:vsock_assign_transport+0x366/0x600
Call Trace:
 vsock_connect+0x59c/0xc40
 __sys_connect+0xe8/0x100
 __x64_sys_connect+0x6e/0xc0
 do_syscall_64+0x92/0x1c0
 entry_SYSCALL_64_after_hwframe+0x4b/0x53

Comment 1 Jon Moroney 2025-07-25 16:57:17 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025072507-CVE-2025-38461-33b1@gregkh/T

Comment 4 errata-xmlrpc 2025-09-02 06:45:28 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:15005 https://access.redhat.com/errata/RHSA-2025:15005

Comment 5 errata-xmlrpc 2025-09-02 06:54:25 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:15011 https://access.redhat.com/errata/RHSA-2025:15011

Comment 8 errata-xmlrpc 2025-09-22 11:03:25 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2025:16373 https://access.redhat.com/errata/RHSA-2025:16373

Comment 9 errata-xmlrpc 2025-09-22 14:08:58 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2025:16372 https://access.redhat.com/errata/RHSA-2025:16372

Comment 10 errata-xmlrpc 2025-09-25 00:28:34 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2025:16669 https://access.redhat.com/errata/RHSA-2025:16669

Comment 11 errata-xmlrpc 2025-10-01 00:21:45 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2025:17123 https://access.redhat.com/errata/RHSA-2025:17123

Comment 12 errata-xmlrpc 2025-10-01 00:22:24 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2025:17122 https://access.redhat.com/errata/RHSA-2025:17122

Comment 13 errata-xmlrpc 2025-10-01 18:10:21 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2025:17159 https://access.redhat.com/errata/RHSA-2025:17159

Comment 14 errata-xmlrpc 2025-10-01 19:16:48 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2025:17192 https://access.redhat.com/errata/RHSA-2025:17192

Comment 15 errata-xmlrpc 2025-10-15 00:24:59 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-2025:18043 https://access.redhat.com/errata/RHSA-2025:18043

Comment 18 errata-xmlrpc 2025-10-22 00:23:13 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-2025:18932 https://access.redhat.com/errata/RHSA-2025:18932

Comment 19 errata-xmlrpc 2025-12-04 12:45:36 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-2025:22752 https://access.redhat.com/errata/RHSA-2025:22752