CVE-2026-64002 (GCVE-0-2026-64002)

Vulnerability from cvelistv5 – Published: 2026-07-19 14:56 – Updated: 2026-07-20 13:42
VLAI
Title
ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()
Summary
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.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 122ff243f5f104194750ecbc76d5946dd1eec934 , < ecf45080a4d3f4526cacb8b14060fe3b49a6913b (git)
Affected: 122ff243f5f104194750ecbc76d5946dd1eec934 , < a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c (git)
Affected: 122ff243f5f104194750ecbc76d5946dd1eec934 , < 5b23a2ff379e70b6b9ff744a972b63e1f8f4d996 (git)
Affected: 122ff243f5f104194750ecbc76d5946dd1eec934 , < 8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57 (git)
Affected: 122ff243f5f104194750ecbc76d5946dd1eec934 , < 6512c57c4638ddec113bf42439361ba85a12048d (git)
Affected: 122ff243f5f104194750ecbc76d5946dd1eec934 , < a7f4eefb6e1458431eef9fa20fb363320d185f76 (git)
Affected: 122ff243f5f104194750ecbc76d5946dd1eec934 , < 155f90be5ee8be5b110ebc0b7da33c54c83b0208 (git)
Affected: 122ff243f5f104194750ecbc76d5946dd1eec934 , < 87a1e0fe7776da7ab411be332b4be58ac8840d10 (git)
Create a notification for this product.
Linux Linux Affected: 3.16
Unaffected: 0 , < 3.16 (semver)
Unaffected: 5.10.259 , ≤ 5.10.* (semver)
Unaffected: 5.15.210 , ≤ 5.15.* (semver)
Unaffected: 6.1.176 , ≤ 6.1.* (semver)
Unaffected: 6.6.143 , ≤ 6.6.* (semver)
Unaffected: 6.12.93 , ≤ 6.12.* (semver)
Unaffected: 6.18.35 , ≤ 6.18.* (semver)
Unaffected: 7.0.12 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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    "datePublished": "2026-07-19T14:56:19.495Z",
    "dateReserved": "2026-07-19T07:54:57.026Z",
    "dateUpdated": "2026-07-20T13:42:13.909Z",
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.