Bug 2348632 (CVE-2025-21766) - CVE-2025-21766 kernel: ipv4: use RCU protection in __ip_rt_update_pmtu()
Summary: CVE-2025-21766 kernel: ipv4: use RCU protection in __ip_rt_update_pmtu()
Keywords:
Status: NEW
Alias: CVE-2025-21766
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-02-27 03:05 UTC by OSIDB Bzimport
Modified: 2025-05-22 11:15 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2025-02-27 03:05:47 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ipv4: use RCU protection in __ip_rt_update_pmtu()

__ip_rt_update_pmtu() must use RCU protection to make
sure the net structure it reads does not disappear.
Comment 1 Michal Findra 2025-02-27 20:48:12 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022605-CVE-2025-21766-a004@gregkh/T
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