Vulnerability in Linux
CVE-2026-64002
In the Linux kernel, the following vulnerability has been resolved: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() ipv4_sysctl_exit_net() is currently freeing net->ipv4.sysctl_local_reserved_ports too soon. Only after unregister_net_sysctl_table() we can be sure no threads can possibly use the sysctls, including /proc/sys/net/ipv4/ip_local_reserved_ports.
EPSS: 0.001 (2.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux — versions 122ff243f5f104194750ecbc76d5946dd1eec934, 3.16, 0
References
Frequently asked questions
- What is CVE-2026-64002?
- CVE-2026-64002 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2026-07-19.
- How severe is CVE-2026-64002?
- High severity. CVSS v3 base score is 7.8 out of 10.