CVE-2025-21766

In the Linux kernel, the following vulnerability has been resolved: ipv4: use RCU protection in iprtupdatepmtu iprtupdatepmtu must use RCU protection to make sure the net structure it reads does not disappear...

CVE-2025-21765 ipv6: use RCU protection in ip6_default_advmss()

In the Linux kernel, the following vulnerability has been resolved: ipv6: use RCU protection in ip6defaultadvmss ip6defaultadvmss needs rcu protection to make sure the net structure it reads does not disappear...

CVE-2025-21766 ipv4: use RCU protection in __ip_rt_update_pmtu()

In the Linux kernel, the following vulnerability has been resolved: ipv4: use RCU protection in iprtupdatepmtu iprtupdatepmtu must use RCU protection to make sure the net structure it reads does not disappear...

CVE-2025-21763

Summary of CVE-2025-21763 : In the Linux kernel, __neigh_notify() can be invoked without RTNL or RCU protection, creating a potential use-after-free (UAF) scenario in neighbour handling. The mitigation is to apply RCU protection to neighbour notifications to prevent UAF. Connected advisories corr...

CVE-2025-21764

The CVE-2025-21764 issue affects the Linux kernel: ndisc_alloc_skb() could be invoked without RTNL or RCU held, enabling a potential use-after-free. The published fixes add RCU protection to ndisc_alloc_skb() to prevent UAF. Affected advisories (e.g., kernel security updates in Astra Linux, ALAS/...

CVE-2025-21763 neighbour: use RCU protection in __neigh_notify()

In the Linux kernel, the following vulnerability has been resolved: neighbour: use RCU protection in neighnotify neighnotify can be called without RTNL or RCU protection. Use RCU protection to avoid potential UAF...

CVE-2025-21764 ndisc: use RCU protection in ndisc_alloc_skb()

In the Linux kernel, the following vulnerability has been resolved: ndisc: use RCU protection in ndiscallocskb ndiscallocskb can be called without RTNL or RCU being held. Add RCU protection to avoid possible UAF...

CVE-2025-21763 neighbour: use RCU protection in __neigh_notify()

In the Linux kernel, the following vulnerability has been resolved: neighbour: use RCU protection in neighnotify neighnotify can be called without RTNL or RCU protection. Use RCU protection to avoid potential UAF...

CVE-2025-21763 neighbour: use RCU protection in __neigh_notify()

In the Linux kernel, the following vulnerability has been resolved: neighbour: use RCU protection in neighnotify neighnotify can be called without RTNL or RCU protection. Use RCU protection to avoid potential UAF...

CVE-2025-21764 ndisc: use RCU protection in ndisc_alloc_skb()

In the Linux kernel, the following vulnerability has been resolved: ndisc: use RCU protection in ndiscallocskb ndiscallocskb can be called without RTNL or RCU being held. Add RCU protection to avoid possible UAF...

CVE-2025-21764

In the Linux kernel, the following vulnerability has been resolved: ndisc: use RCU protection in ndiscallocskb ndiscallocskb can be called without RTNL or RCU being held. Add RCU protection to avoid possible UAF...

CVE-2025-21763

In the Linux kernel, the following vulnerability has been resolved: neighbour: use RCU protection in neighnotify neighnotify can be called without RTNL or RCU protection. Use RCU protection to avoid potential UAF...

CVE-2025-21764 ndisc: use RCU protection in ndisc_alloc_skb()

In the Linux kernel, the following vulnerability has been resolved: ndisc: use RCU protection in ndiscallocskb ndiscallocskb can be called without RTNL or RCU being held. Add RCU protection to avoid possible UAF...

CVE-2025-21762 arp: use RCU protection in arp_xmit()

In the Linux kernel, the following vulnerability has been resolved: arp: use RCU protection in arpxmit arpxmit can be called without RTNL or RCU protection. Use RCU protection to avoid potential UAF...

CVE-2025-21762

Summary (CVE‑2025‑21762) The Linux kernel fixed a vulnerability in arp_xmit() where arp_xmit() could be called without RTNL or RCU protection, creating a potential use‑after‑free (UAF) scenario. The remediation uses RCU protection to guard arp_xmit() and prevent UAF. The issue is documented in th...

CVE-2025-21762 arp: use RCU protection in arp_xmit()

In the Linux kernel, the following vulnerability has been resolved: arp: use RCU protection in arpxmit arpxmit can be called without RTNL or RCU protection. Use RCU protection to avoid potential UAF...

CVE-2025-21761 openvswitch: use RCU protection in ovs_vport_cmd_fill_info()

In the Linux kernel, the following vulnerability has been resolved: openvswitch: use RCU protection in ovsvportcmdfillinfo ovsvportcmdfillinfo can be called without RTNL or RCU. Use RCU protection and devnetrcu to avoid potential UAF...

CVE-2025-21761

CVE-2025-21761 affects the Linux kernel/Open vSwitch area. The root cause is that ovs_vport_cmd_fill_info() could be invoked without RTNL or RCU, risking a use-after-free. The fix adds RCU protection and uses dev_net_rcu() to prevent UAF. This is a kernel-level issue with potential impact describ...

CVE-2025-21762 arp: use RCU protection in arp_xmit()

In the Linux kernel, the following vulnerability has been resolved: arp: use RCU protection in arpxmit arpxmit can be called without RTNL or RCU protection. Use RCU protection to avoid potential UAF...

CVE-2025-21761 openvswitch: use RCU protection in ovs_vport_cmd_fill_info()

In the Linux kernel, the following vulnerability has been resolved: openvswitch: use RCU protection in ovsvportcmdfillinfo ovsvportcmdfillinfo can be called without RTNL or RCU. Use RCU protection and devnetrcu to avoid potential UAF...