CVE-2026-53012

A flaw was found in the Linux kernel's networking subsystem. When an IPv6 nexthop is replaced with an IPv4 nexthop, a flag indicating the presence of IPv4 members in nexthop groups is not correctly updated. This can lead to IPv6 routes referencing groups that only contain IPv4 members. A local...

CVE-2026-53012

CVE-2026-53012 affects the Linux kernel: when an IPv6 nexthop is replaced with an IPv4 nexthop, the has_v4 flag in groups containing that nexthop is not updated. The reverse direction (AF_INET6 to AF_INET) is missed, enabling a stale has_v4=false to bypass fib6_check_nexthop and may cause a NULL ...

SUSE CVE-2026-31531

In the Linux kernel, the following vulnerability has been resolved: ipv4: nexthop: allocate skb dynamically in rtmgetnexthop When querying a nexthop object via RTMGETNEXTHOP, the kernel currently allocates a fixed-size skb using NLMSGGOODSIZE. While sufficient for single nexthops and small...

CVE-2026-31531

In the Linux kernel, the following vulnerability has been resolved: ipv4: nexthop: allocate skb dynamically in rtmgetnexthop When querying a nexthop object via RTMGETNEXTHOP, the kernel currently allocates a fixed-size skb using NLMSGGOODSIZE. While sufficient for single nexthops and small...

PT-2026-34657

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists when querying a nexthop object via RTM GETNEXTHOP. The kernel allocates a fixed-size skb socket buffer using NLMSG GOODSIZE, which is insufficient for large nexthop group...