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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
122ff243f5f104194750ecbc76d5946dd1eec934 affected < ecf45080a4d3f4526cacb8b14060fe3b49a6913b
122ff243f5f104194750ecbc76d5946dd1eec934 affected < a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c
122ff243f5f104194750ecbc76d5946dd1eec934 affected < 5b23a2ff379e70b6b9ff744a972b63e1f8f4d996
122ff243f5f104194750ecbc76d5946dd1eec934 affected < 8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57
122ff243f5f104194750ecbc76d5946dd1eec934 affected < 6512c57c4638ddec113bf42439361ba85a12048d
122ff243f5f104194750ecbc76d5946dd1eec934 affected < a7f4eefb6e1458431eef9fa20fb363320d185f76
122ff243f5f104194750ecbc76d5946dd1eec934 affected < 155f90be5ee8be5b110ebc0b7da33c54c83b0208
122ff243f5f104194750ecbc76d5946dd1eec934 affected < 87a1e0fe7776da7ab411be332b4be58ac8840d10
Linux Linux affected
Version Status Constraints
3.16 affected —
0 unaffected < 3.16
5.10.259 unaffected ≤ 5.10.*
5.15.210 unaffected ≤ 5.15.*
6.1.176 unaffected ≤ 6.1.*
6.6.143 unaffected ≤ 6.6.*
6.12.93 unaffected ≤ 6.12.*
6.18.35 unaffected ≤ 6.18.*
7.0.12 unaffected ≤ 7.0.*
7.1 unaffected ≤ *

No data.

No data.

No data.

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/155f90be5ee8be5b110ebc0b7da33c54c83b0208 cve-icon
https://git.kernel.org/stable/c/5b23a2ff379e70b6b9ff744a972b63e1f8f4d996 cve-icon
https://git.kernel.org/stable/c/6512c57c4638ddec113bf42439361ba85a12048d cve-icon
https://git.kernel.org/stable/c/87a1e0fe7776da7ab411be332b4be58ac8840d10 cve-icon
https://git.kernel.org/stable/c/8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57 cve-icon
https://git.kernel.org/stable/c/a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c cve-icon
https://git.kernel.org/stable/c/a7f4eefb6e1458431eef9fa20fb363320d185f76 cve-icon
https://git.kernel.org/stable/c/ecf45080a4d3f4526cacb8b14060fe3b49a6913b cve-icon
History

Sun, 19 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
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.
Title ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-07-19T14:56:19.495Z

Reserved: 2026-07-19T07:54:57.026Z

Link: CVE-2026-64002

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.