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CVE-2026-64002

HIGHCVSS 7.8/10EPSS 0.13%

Last modified

CVE-2026-64002 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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 estimates a 0.13% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.13%

3.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 122ff243f5f104194750ecbc76d5946dd1eec934, < ecf45080a4d3f4526cacb8b14060fe3b49a6913b; >= 122ff243f5f104194750ecbc76d5946dd1eec934, < a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c; >= 122ff243f5f104194750ecbc76d5946dd1eec934, < 5b23a2ff379e70b6b9ff744a972b63e1f8f4d996; >= 122ff243f5f104194750ecbc76d5946dd1eec934, < 8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57; >= 122ff243f5f104194750ecbc76d5946dd1eec934, < 6512c57c4638ddec113bf42439361ba85a12048d; >= 122ff243f5f104194750ecbc76d5946dd1eec934, < a7f4eefb6e1458431eef9fa20fb363320d185f76; >= 122ff243f5f104194750ecbc76d5946dd1eec934, < 155f90be5ee8be5b110ebc0b7da33c54c83b0208; >= 122ff243f5f104194750ecbc76d5946dd1eec934, < 87a1e0fe7776da7ab411be332b4be58ac8840d10
LinuxLinux3.16

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is 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.
How severe is CVE-2026-64002?
CVE-2026-64002 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.13% probability of exploitation in the next 30 days.
How do I fix CVE-2026-64002?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST