Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-19. the CNA's CVSS baseline 7.8; sources differ by 0.0.
A fix is available — apply it.
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.
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
July 19, 2026
August 5, 2026
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Red Hat Security Advisory: kernel security, bug fix, and enhancement update
Red Hat Security Advisory: kernel security, bug fix, and enhancement update
Red Hat Security Advisory: kernel security, bug fix, and enhancement update
Red Hat Security Advisory: kernel security, bug fix, and enhancement update
Red Hat Security Advisory: kernel security update
Red Hat Security Advisory: kernel-rt security update
Red Hat Security Advisory: kernel security update
Red Hat Security Advisory: kernel security update
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| linux | 5.10.103-1 ... 5.10.92-2 (54 versions) | 5.10.259-1 | — |
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| linux | 6.1.106-1 ... 6.1.99-1 (53 versions) | 6.1.176-1 | — |
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| linux | 6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions) | 6.12.94-1 | — |
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| linux | 6.12.100-1 ... 7.0.9-1~bpo13+1 (141 versions) | 7.0.12-1 | — |
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
RHSA-2026:68531 — Important
RHSA-2026:68532 — Important
Linux kernel vulnerabilities
Linux kernel (Azure) vulnerabilities
Linux kernel vulnerabilities
Linux kernel (NVIDIA) vulnerabilities
Linux kernel (NVIDIA BaseOS) vulnerabilities
Linux kernel (GCP) vulnerabilities
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 259 total refreshes for this CVE.
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-64002
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