Bug 2348529 (CVE-2025-21763) - CVE-2025-21763 kernel: neighbour: use RCU protection in __neigh_notify()
Summary: CVE-2025-21763 kernel: neighbour: use RCU protection in __neigh_notify()
Keywords:
Status: NEW
Alias: CVE-2025-21763
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 03:02 UTC by OSIDB Bzimport
Modified: 2025-02-28 13:08 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2025-02-27 03:02:07 UTC 
In the Linux kernel, the following vulnerability has been resolved:

neighbour: use RCU protection in __neigh_notify()

__neigh_notify() can be called without RTNL or RCU protection.

Use RCU protection to avoid potential UAF.
Comment 1 Michal Findra 2025-02-27 15:29:47 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022604-CVE-2025-21763-dcff@gregkh/T
Comment 2 Michal Findra 2025-02-27 15:30:55 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022604-CVE-2025-21763-dcff@gregkh/T
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