CVE-2026-64005 net/smc: Do not re-initialize smc hashtables

In the Linux kernel, the following vulnerability has been resolved: net/smc: Do not re-initialize smc hashtables INITHLISTHEAD&smcvhashinfo.ht are called after smcnlinit, protoregister and sockregister. This can lead to smcvhashinfo.ht being reset even though hash entries already exist and are...

CVE-2026-64004 net/iucv: fix locking in .getsockopt

In the Linux kernel, the following vulnerability has been resolved: net/iucv: fix locking in .getsockopt Mirror iucvsocksetsockopt and wrap the whole switch in locksock/releasesock. The pre-existing SOMSGLIMIT-only lock becomes redundant and is removed. Any AFIUCV HIPER user can potentially crash...

EUVD-2026-45577

In the Linux kernel, the following vulnerability has been resolved: net/iucv: fix locking in .getsockopt Mirror iucvsocksetsockopt and wrap the whole switch in locksock/releasesock. The pre-existing SOMSGLIMIT-only lock becomes redundant and is removed. Any AFIUCV HIPER user can potentially crash...

CVE-2026-64002

In the Linux kernel, the following vulnerability has been resolved: ipv4: free net-ipv4.sysctllocalreservedports after unregisternetsysctltable ipv4sysctlexitnet is currently freeing net-ipv4.sysctllocalreservedports too soon. Only after unregisternetsysctltable we can be sure no threads can...

CVE-2026-64002

CVE-2026-64002: Linux kernel fix for freeing net->ipv4.sysctl_local_reserved_ports too early. The issue occurs because ipv4_sysctl_exit_net() frees the pointer before unregister_net_sysctl_table(), risking use of sysctls such as /proc/sys/net/ipv4/ip_local_reserved_ports. The resolution ensure...

EUVD-2026-45575

In the Linux kernel, the following vulnerability has been resolved: ipv4: free net-ipv4.sysctllocalreservedports after unregisternetsysctltable ipv4sysctlexitnet is currently freeing net-ipv4.sysctllocalreservedports too soon. Only after unregisternetsysctltable we can be sure no threads can...

CVE-2026-63982

In the Linux kernel, the following vulnerability has been resolved: net/sched: Fix ethx:ingress - ethy:egress - ethx:ingress mirred loop When mirred redirects to ingress from either ingress or egress the loop state from schedmirreddev array dev is lost because of 1 the packet deferral into the...

CVE-2026-63982 net/sched: Fix ethx:ingress -> ethy:egress -> ethx:ingress mirred loop

In the Linux kernel, the following vulnerability has been resolved: net/sched: Fix ethx:ingress - ethy:egress - ethx:ingress mirred loop When mirred redirects to ingress from either ingress or egress the loop state from schedmirreddev array dev is lost because of 1 the packet deferral into the...

EUVD-2026-45755

In the Linux kernel, the following vulnerability has been resolved: net/sched: Fix ethx:ingress - ethy:egress - ethx:ingress mirred loop When mirred redirects to ingress from either ingress or egress the loop state from schedmirreddev array dev is lost because of 1 the packet deferral into the...

CVE-2026-63982 net/sched: Fix ethx:ingress -> ethy:egress -> ethx:ingress mirred loop

In the Linux kernel, the following vulnerability has been resolved: net/sched: Fix ethx:ingress - ethy:egress - ethx:ingress mirred loop When mirred redirects to ingress from either ingress or egress the loop state from schedmirreddev array dev is lost because of 1 the packet deferral into the...

CVE-2026-63981

In the Linux kernel, the following vulnerability has been resolved: net/sched: actmirred: Fix blockcast recursion bypass leading to stack overflow tcfmirredact checks schedmirrednest against MIRREDNESTLIMIT 4 to prevent deep recursion. However, when the action uses blockcast tcfmblockid != 0, the...

CVE-2026-63981 net/sched: act_mirred: Fix blockcast recursion bypass leading to stack overflow

In the Linux kernel, the following vulnerability has been resolved: net/sched: actmirred: Fix blockcast recursion bypass leading to stack overflow tcfmirredact checks schedmirrednest against MIRREDNESTLIMIT 4 to prevent deep recursion. However, when the action uses blockcast tcfmblockid != 0, the...

CVE-2026-63981 net/sched: act_mirred: Fix blockcast recursion bypass leading to stack overflow

In the Linux kernel, the following vulnerability has been resolved: net/sched: actmirred: Fix blockcast recursion bypass leading to stack overflow tcfmirredact checks schedmirrednest against MIRREDNESTLIMIT 4 to prevent deep recursion. However, when the action uses blockcast tcfmblockid != 0, the...

CVE-2026-63979 net/handshake: hand off the pinned file reference to accept_doit

In the Linux kernel, the following vulnerability has been resolved: net/handshake: hand off the pinned file reference to acceptdoit handshakereqnext removes the request from the per-net pending list and drops hnlock before handshakenlacceptdoit reads req-hrsk-sksocket and dereferences sock-file...

CVE-2026-63978 net/handshake: Drain pending requests at net namespace exit

In the Linux kernel, the following vulnerability has been resolved: net/handshake: Drain pending requests at net namespace exit The arguments to listspliceinit in handshakenetexit are reversed. The call moves the local empty "requests" list onto hn-hnrequests, leaving the local list empty, so the...

CVE-2026-63978

The CVE-2026-63978 issue affects the Linux kernel in net/handshake handling during net namespace exit. The root cause is reversed arguments to list_splice_init() in handshake_net_exit(), which transfers the pending handshake requests to the wrong list, causing the drain loop to skip, leaving some...

EUVD-2026-45751

In the Linux kernel, the following vulnerability has been resolved: net/handshake: Drain pending requests at net namespace exit The arguments to listspliceinit in handshakenetexit are reversed. The call moves the local empty "requests" list onto hn-hnrequests, leaving the local list empty, so the...

CVE-2026-63978 net/handshake: Drain pending requests at net namespace exit

In the Linux kernel, the following vulnerability has been resolved: net/handshake: Drain pending requests at net namespace exit The arguments to listspliceinit in handshakenetexit are reversed. The call moves the local empty "requests" list onto hn-hnrequests, leaving the local list empty, so the...

CVE-2026-63978

In the Linux kernel, the following vulnerability has been resolved: net/handshake: Drain pending requests at net namespace exit The arguments to listspliceinit in handshakenetexit are reversed. The call moves the local empty "requests" list onto hn-hnrequests, leaving the local list empty, so the...

CVE-2026-63921 ip6: vti: Use ip6_tnl.net in vti6_siocdevprivate().

In the Linux kernel, the following vulnerability has been resolved: ip6: vti: Use ip6tnl.net in vti6siocdevprivate. After patch 1/2 in this series, vti6update unlinks and relinks the tunnel through t-net. vti6siocdevprivate still uses devnetdev for the collision lookup. For a tunnel moved through...