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Fixed

LIN1021-14383 : Security Advisory - linux - CVE-2025-21760

Created: Feb 27, 2025 Updated: Dec 7, 2025

Resolved Date: Nov 27, 2025

Found In Version: 10.21.20.1

Fix Version: 10.21.20.26

Severity: Standard

Applicable for: Wind River Linux LTS 21

Component/s: Kernel

Description

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

ndisc: extend RCU protection in ndisc_send_skb()

ndisc_send_skb() can be called without RTNL or RCU held.

Acquire rcu_read_lock() earlier, so that we can use dev_net_rcu()
and avoid a potential UAF.


CREATE(Triage):(User=admin) CVE-2025-21760 (https://nvd.nist.gov/vuln/detail/CVE-2025-21760)

CVEs

CVE-2025-21760