CVE-2026-64002ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()
- 7.8HighCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 97% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 122ff243f5f104194750ecbc76d5946dd1eec934 – < ecf45080a4d3f4526cacb8b14060fe3b49a6913b
- affected 122ff243f5f104194750ecbc76d5946dd1eec934 – < a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c
- affected 122ff243f5f104194750ecbc76d5946dd1eec934 – < 5b23a2ff379e70b6b9ff744a972b63e1f8f4d996
- affected 122ff243f5f104194750ecbc76d5946dd1eec934 – < 8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57
- affected 122ff243f5f104194750ecbc76d5946dd1eec934 – < 6512c57c4638ddec113bf42439361ba85a12048d
- affected 122ff243f5f104194750ecbc76d5946dd1eec934 – < a7f4eefb6e1458431eef9fa20fb363320d185f76
- affected 122ff243f5f104194750ecbc76d5946dd1eec934 – < 155f90be5ee8be5b110ebc0b7da33c54c83b0208
- affected 122ff243f5f104194750ecbc76d5946dd1eec934 – < 87a1e0fe7776da7ab411be332b4be58ac8840d10
- affected 3.16
- unaffected < 3.16
- unaffected 5.10.259 – ≤ 5.10.*
- unaffected 5.15.210 – ≤ 5.15.*
- unaffected 6.1.176 – ≤ 6.1.*
- unaffected 6.6.143 – ≤ 6.6.*
- unaffected 6.12.93 – ≤ 6.12.*
- unaffected 6.18.35 – ≤ 6.18.*
- unaffected 7.0.12 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References8
- https://git.kernel.org/stable/c/ecf45080a4d3f4526cacb8b14060fe3b49a6913b (opens in a new tab)
- https://git.kernel.org/stable/c/a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c (opens in a new tab)
- https://git.kernel.org/stable/c/5b23a2ff379e70b6b9ff744a972b63e1f8f4d996 (opens in a new tab)
- https://git.kernel.org/stable/c/8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57 (opens in a new tab)
- https://git.kernel.org/stable/c/6512c57c4638ddec113bf42439361ba85a12048d (opens in a new tab)
- https://git.kernel.org/stable/c/a7f4eefb6e1458431eef9fa20fb363320d185f76 (opens in a new tab)
- https://git.kernel.org/stable/c/155f90be5ee8be5b110ebc0b7da33c54c83b0208 (opens in a new tab)
- https://git.kernel.org/stable/c/87a1e0fe7776da7ab411be332b4be58ac8840d10 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-45575 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-64002)Record last updated .