CRITICAL 9.8 Microsoft
CVE-2026-63999
ethtool: rss: fix indir_table and hkey leak on get_rxfh failure
Microsoft Security Update 2026-Jul: ethtool: rss: fix indir_table and hkey leak on get_rxfh failure
Affected Products
- azl3 kernel 6.6.144.1-1 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63999
- https://nvd.nist.gov/vuln/detail/CVE-2026-63999
This critical severity vulnerability with a CVSS score of 9.8 was published on 2026-07-14 via Microsoft. Affected: azl3 kernel 6.6.144.1-1 on Azure Linux 3.0.
Risk Timeline
CVE Disclosed2026-07-14 · 20 days ago
Remediation Resources
Official Advisory
msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63999NVD / MITRE
nvd.nist.gov/vuln/detail/CVE-2026-63999Related Vulnerabilities
| CVE | Title | Severity | CVSS |
|---|---|---|---|
| CVE-2026-40175 | Axios has Unrestricted Cloud Metadata Exfiltration via Header Injection Chain | CRITICAL | 10.0 |
| CVE-2026-42960 | Possible cache poisoning via promiscuous records for the authority section | CRITICAL | 10.0 |
| CVE-2026-46595 | Invoking VerifiedPublicKeyCallback permissions skip enforcement in golang.org/x | CRITICAL | 10.0 |
| CVE-2026-39821 | Invoking failure to reject ASCII-only Punycode-encoded labels in golang.org/x/ne | CRITICAL | 10.0 |
| CVE-2024-24576 PoC | Rusts's `std::process::Command` did not properly escape arguments of batch files | CRITICAL | 10.0 |
| CVE-2026-7374 | Kubevirt: kubevirt virt-handler: privilege escalation and node compromise via sy | CRITICAL | 9.9 |
vulnfeed aggregates 9214 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.