Bug 2348575 (CVE-2025-21764) - CVE-2025-21764 kernel: ndisc: use RCU protection in ndisc_alloc_skb()
Summary: CVE-2025-21764 kernel: ndisc: use RCU protection in ndisc_alloc_skb()
Keywords:
Status: NEW
Alias: CVE-2025-21764
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: 2025-02-27 03:03 UTC by OSIDB Bzimport
Modified: 2025-09-10 02:43 UTC (History)
4 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 RHBA-2025:10153 0 None None None 2025-07-01 18:19:36 UTC
Red Hat Product Errata RHBA-2025:9598 0 None None None 2025-06-25 05:09:01 UTC
Red Hat Product Errata RHBA-2025:9607 0 None None None 2025-06-25 06:36:56 UTC
Red Hat Product Errata RHBA-2025:9650 0 None None None 2025-06-25 15:50:13 UTC
Red Hat Product Errata RHSA-2025:10211 0 None None None 2025-07-02 13:26:01 UTC
Red Hat Product Errata RHSA-2025:8333 0 None None None 2025-06-02 01:16:10 UTC
Red Hat Product Errata RHSA-2025:9079 0 None None None 2025-06-16 07:44:07 UTC
Red Hat Product Errata RHSA-2025:9490 0 None None None 2025-06-24 05:16:49 UTC
Red Hat Product Errata RHSA-2025:9491 0 None None None 2025-06-24 06:12:10 UTC
Red Hat Product Errata RHSA-2025:9492 0 None None None 2025-06-24 04:44:00 UTC
Red Hat Product Errata RHSA-2025:9493 0 None None None 2025-06-24 04:38:09 UTC
Red Hat Product Errata RHSA-2025:9494 0 None None None 2025-06-24 06:15:01 UTC
Red Hat Product Errata RHSA-2025:9497 0 None None None 2025-06-24 05:05:44 UTC
Red Hat Product Errata RHSA-2025:9498 0 None None None 2025-06-24 06:49:22 UTC
Red Hat Product Errata RHSA-2025:9580 0 None None None 2025-06-25 00:31:12 UTC
Red Hat Product Errata RHSA-2025:9581 0 None None None 2025-06-25 00:14:07 UTC
Red Hat Product Errata RHSA-2025:9584 0 None None None 2025-06-25 00:34:52 UTC

Description OSIDB Bzimport 2025-02-27 03:03:47 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ndisc: use RCU protection in ndisc_alloc_skb()

ndisc_alloc_skb() can be called without RTNL or RCU being held.

Add RCU protection to avoid possible UAF.
Comment 1 Michal Findra 2025-02-27 17:38:38 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022605-CVE-2025-21764-1061@gregkh/T
Comment 2 errata-xmlrpc 2025-06-02 01:16:08 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:8333 https://access.redhat.com/errata/RHSA-2025:8333
Comment 4 errata-xmlrpc 2025-06-16 07:44:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:9079 https://access.redhat.com/errata/RHSA-2025:9079
Comment 6 errata-xmlrpc 2025-06-24 04:38:08 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2025:9493 https://access.redhat.com/errata/RHSA-2025:9493
Comment 7 errata-xmlrpc 2025-06-24 04:43:59 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2025:9492 https://access.redhat.com/errata/RHSA-2025:9492
Comment 8 errata-xmlrpc 2025-06-24 05:05:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

Via RHSA-2025:9497 https://access.redhat.com/errata/RHSA-2025:9497
Comment 9 errata-xmlrpc 2025-06-24 05:16:47 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Advanced Update Support

Via RHSA-2025:9490 https://access.redhat.com/errata/RHSA-2025:9490
Comment 10 errata-xmlrpc 2025-06-24 06:12:08 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2025:9491 https://access.redhat.com/errata/RHSA-2025:9491
Comment 11 errata-xmlrpc 2025-06-24 06:15:00 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2025:9494 https://access.redhat.com/errata/RHSA-2025:9494
Comment 12 errata-xmlrpc 2025-06-24 06:49:20 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-2025:9498 https://access.redhat.com/errata/RHSA-2025:9498
Comment 13 errata-xmlrpc 2025-06-25 00:14:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2025:9581 https://access.redhat.com/errata/RHSA-2025:9581
Comment 14 errata-xmlrpc 2025-06-25 00:31:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2025:9580 https://access.redhat.com/errata/RHSA-2025:9580
Comment 15 errata-xmlrpc 2025-06-25 00:34:50 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2025:9584 https://access.redhat.com/errata/RHSA-2025:9584
Comment 17 errata-xmlrpc 2025-07-02 13:26:00 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-2025:10211 https://access.redhat.com/errata/RHSA-2025:10211
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