CVE-2025-21791 vrf: use RCU protection in l3mdev_l3_out()

In the Linux kernel, the following vulnerability has been resolved: vrf: use RCU protection in l3mdevl3out l3mdevl3out can be called without RCU being held: rawsendmsg ippushpendingframes ipsendskb iplocalout iplocalout l3mdevipout Add rcureadlock / rcureadunlock pair to avoid a potential UAF...

CVE-2025-21790 vxlan: check vxlan_vnigroup_init() return value

In the Linux kernel, the following vulnerability has been resolved: vxlan: check vxlanvnigroupinit return value vxlaninit must check vxlanvnigroupinit success otherwise a crash happens later, spotted by syzbot. Oops: general protection fault, probably for non-canonical address 0xdffffc000000002c:...

CVE-2025-21790

In the Linux kernel, the following vulnerability has been resolved: vxlan: check vxlanvnigroupinit return value vxlaninit must check vxlanvnigroupinit success otherwise a crash happens later, spotted by syzbot. Oops: general protection fault, probably for non-canonical address 0xdffffc000000002c:...

CVE-2025-21776 USB: hub: Ignore non-compliant devices with too many configs or interfaces

In the Linux kernel, the following vulnerability has been resolved: USB: hub: Ignore non-compliant devices with too many configs or interfaces Robert Morris created a test program which can cause usbhubtostructhub to dereference a NULL or inappropriate pointer: Oops: general protection fault,...

CVE-2025-21766

CVE-2025-21766 concerns the Linux kernel IPv4 path. The issue is in __ip_rt_update_pmtu(), which must use Read-Copy-Update (RCU) protection to ensure the net structure it reads cannot disappear during updates. The available connected documents confirm this vulnerability is tied to incorrect locki...

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-2025-21765

CVE-2025-21765 is a Linux kernel IPv6 stack issue where ip6_default_advmss() reads the net structure without proper RCU protection, risking use-after-free scenarios. The vulnerability is fixed in updated kernels across Linux distributions (examples: ALAS2KERNEL advisories for AL2 kernels 5.10/5.1...

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-2025-21765 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-2025-21763

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 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 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-2025-21764

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

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-2025-21764 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...