PT-2026-61319 · Linux · Linux Kernel

CVE-2026-64002 · Published 2026-07-19 · Updated 2026-07-19

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the ipv4 sysctl exit net() function where net->ipv4.sysctl local reserved ports is freed prematurely. The memory should only be released after the unregister net sysctl table() function is called to ensure that no active threads are accessing the sysctls, such as the /proc/sys/net/ipv4/ip local reserved ports interface.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-64002

Affected Products

Linux Kernel

References · 11

• https://nvd.nist.gov/vuln/detail/CVE-2026-64002 · Security Note
• https://git.kernel.org/stable/c/6512c57c4638ddec113bf42439361ba85a12048d · Note
• https://twitter.com/infoflowcloud/status/2078862634300870857 · Twitter Post
• https://git.kernel.org/stable/c/ecf45080a4d3f4526cacb8b14060fe3b49a6913b · Note
• https://git.kernel.org/stable/c/5b23a2ff379e70b6b9ff744a972b63e1f8f4d996 · Note
• https://git.kernel.org/stable/c/87a1e0fe7776da7ab411be332b4be58ac8840d10 · Note
• https://git.kernel.org/stable/c/8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57 · Note
• https://git.kernel.org/stable/c/a7f4eefb6e1458431eef9fa20fb363320d185f76 · Note
• https://twitter.com/CVEnew/status/2078861438655881425 · Twitter Post
• https://git.kernel.org/stable/c/155f90be5ee8be5b110ebc0b7da33c54c83b0208 · Note
• https://git.kernel.org/stable/c/a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c · Note