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LIN1022-14064 : Security Advisory - linux - CVE-2025-21758

Created: Feb 27, 2025    Updated: May 29, 2025
Resolved Date: May 28, 2025
Found In Version: 10.22.33.1
Fix Version: 10.22.33.21
Severity: Standard
Applicable for: Wind River Linux LTS 22
Component/s: Kernel

Description

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

ipv6: mcast: add RCU protection to mld_newpack()

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

Note that we no longer can use sock_alloc_send_skb() because
ipv6.igmp_sk uses GFP_KERNEL allocations which can sleep.

Instead use alloc_skb() and charge the net->ipv6.igmp_sk
socket under RCU protection.

CREATE(Triage):(User=admin) CVE-2025-21758 (https://nvd.nist.gov/vuln/detail/CVE-2025-21758)

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