HIGH 7.0 Microsoft
CVE-2026-53131
netfilter: require Ethernet MAC header before using eth_hdr()
Microsoft Security Update 2026-Jun: netfilter: require Ethernet MAC header before using eth_hdr()
Affected Products
- azl3 kernel 6.6.141.1-1 on Azure Linux 3.0
- azl3 kernel 6.6.143.1-1 on Azure Linux 3.0
Remediation
$ sudo apt install --only-upgrade linux-kernelReferences
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53131
- https://nvd.nist.gov/vuln/detail/CVE-2026-53131
This high severity vulnerability with a CVSS score of 7.0 was published on 2026-06-09 via Microsoft. A remediation command is available below. Affected: azl3 kernel 6.6.141.1-1 on Azure Linux 3.0, azl3 kernel 6.6.143.1-1 on Azure Linux 3.0.
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