PT-2026-64643

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the IPv4 implementation where invalid values assigned to the net.ipv4.tcp reordering sysctl are not properly rejected. Because this value is stored as an int but copie...

CVE-2026-64002

A flaw was found in the Linux kernel's IPv4 networking component. The ipv4sysctlexitnet function prematurely frees the net-ipv4.sysctllocalreservedports memory. This can lead to a use-after-free vulnerability, where other threads might attempt to access deallocated memory. Such an issue can resul...

SUSE 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-2026-63809

A flaw was found in the Linux kernel. An issue in the BPF Berkeley Packet Filter subsystem's sysctl handling can lead to memory corruption. Specifically, when a temporary buffer is allocated using kvzalloc but incorrectly freed with kfree, it can corrupt memory. A local attacker could exploit thi...

bpf: use kvfree() for replaced sysctl write buffer

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Linux Distros Unpatched Vulnerability : CVE-2026-64002

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ipv4: free net-ipv4.sysctllocalreservedports after unregisternetsysctltable ipv4sysctlexitnet is currently freeing net-ipv4.sysctllocalreservedports too soon...

SUSE CVE-2026-63809

In the Linux kernel, the following vulnerability has been resolved: bpf: use kvfree for replaced sysctl write buffer procsyscallhandler allocates its temporary sysctl buffer with kvzalloc and passes it to cgroupbpfrunfiltersysctl. Since kvzalloc may fall back to vmalloc for large allocations,...

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 ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()

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-2026-63809

In the Linux kernel, the following vulnerability has been resolved: bpf: use kvfree for replaced sysctl write buffer procsyscallhandler allocates its temporary sysctl buffer with kvzalloc and passes it to cgroupbpfrunfiltersysctl. Since kvzalloc may fall back to vmalloc for large allocations,...

CVE-2026-63809

CVE-2026-63809 affects the Linux kernel memory-management path used by BPF when handling proc sysctl writes. The vulnerability stems from proc_sys_call_handler() allocating a temporary sysctl buffer with kvzalloc() and passing it to __cgroup_bpf_run_filter_sysctl(); since kvzalloc() may fall back...

CVE-2026-63809

In the Linux kernel, the following vulnerability has been resolved: bpf: use kvfree for replaced sysctl write buffer procsyscallhandler allocates its temporary sysctl buffer with kvzalloc and passes it to cgroupbpfrunfiltersysctl. Since kvzalloc may fall back to vmalloc for large allocations,...

CVE-2026-63809 bpf: use kvfree() for replaced sysctl write buffer

In the Linux kernel, the following vulnerability has been resolved: bpf: use kvfree for replaced sysctl write buffer procsyscallhandler allocates its temporary sysctl buffer with kvzalloc and passes it to cgroupbpfrunfiltersysctl. Since kvzalloc may fall back to vmalloc for large allocations,...

EUVD-2026-45475

In the Linux kernel, the following vulnerability has been resolved: bpf: use kvfree for replaced sysctl write buffer procsyscallhandler allocates its temporary sysctl buffer with kvzalloc and passes it to cgroupbpfrunfiltersysctl. Since kvzalloc may fall back to vmalloc for large allocations,...

CVE-2026-63809 bpf: use kvfree() for replaced sysctl write buffer

In the Linux kernel, the following vulnerability has been resolved: bpf: use kvfree for replaced sysctl write buffer procsyscallhandler allocates its temporary sysctl buffer with kvzalloc and passes it to cgroupbpfrunfiltersysctl. Since kvzalloc may fall back to vmalloc for large allocations,...

CVE-2026-63809

In the Linux kernel, the following vulnerability has been resolved: bpf: use kvfree for replaced sysctl write buffer procsyscallhandler allocates its temporary sysctl buffer with kvzalloc and passes it to cgroupbpfrunfiltersysctl. Since kvzalloc may fall back to vmalloc for large allocations,...

Linux Distros Unpatched Vulnerability : CVE-2026-63809

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bpf: use kvfree for replaced sysctl write buffer procsyscallhandler allocates its temporary sysctl buffer with kvzalloc and passes it to cgroupbpfrunfiltersysct...

PT-2026-61125

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 7.1-rc5 Description Memory corruption can occur in the Linux kernel due to incorrect buffer deallocation. The proc sys call handler function allocates a temporary sysctl buffer using kvzalloc, which may use vmall...