Bug 2348645 (CVE-2025-21765) - CVE-2025-21765 kernel: ipv6: use RCU protection in ip6_default_advmss()
Summary: CVE-2025-21765 kernel: ipv6: use RCU protection in ip6_default_advmss()
Keywords:
Status: NEW
Alias: CVE-2025-21765
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 03:06 UTC by OSIDB Bzimport
Modified: 2025-11-11 10:26 UTC (History)
5 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-2025:20095 0 None None None 2025-11-11 08:02:46 UTC
Red Hat Product Errata RHSA-2025:20518 0 None None None 2025-11-11 10:26:02 UTC

Description OSIDB Bzimport 2025-02-27 03:06:16 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ipv6: use RCU protection in ip6_default_advmss()

ip6_default_advmss() needs rcu protection to make
sure the net structure it reads does not disappear.
Comment 1 Michal Findra 2025-02-27 20:42:00 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022605-CVE-2025-21765-4d5e@gregkh/T
Comment 3 errata-xmlrpc 2025-11-11 08:02:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:20095 https://access.redhat.com/errata/RHSA-2025:20095
Comment 4 errata-xmlrpc 2025-11-11 10:26:00 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:20518 https://access.redhat.com/errata/RHSA-2025:20518
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