What’s Vulnerable › Vulnerabilities

CVE-2024-39504: netfilter: nft_inner: validate mandatory meta and payload

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-07-12 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_inner: validate mandatory meta and payload Check for mandatory netlink attributes in payload and meta expression when used embedded from the inner expression, otherwise NULL pointer dereference is possible from userspace.

Affected products

• Linux kernel: from 6.2 before 6.6.35; from 6.7 before 6.9.6; 6.10-rc1, 6.10-rc2, 6.10-rc3 — fixed in 6.6.35, 6.9.6

How to fix

Upgrade to a fixed version: Linux kernel 6.6.35, 6.9.6. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/39323f54cad29602917848346c71b087da92a19d
• https://git.kernel.org/stable/c/b30669fdea0ca03aa22995e6c99f7e7d9dee89ff
• https://git.kernel.org/stable/c/c4ab9da85b9df3692f861512fe6c9812f38b7471
• https://git.kernel.org/stable/c/39323f54cad29602917848346c71b087da92a19d
• https://git.kernel.org/stable/c/b30669fdea0ca03aa22995e6c99f7e7d9dee89ff
• https://git.kernel.org/stable/c/c4ab9da85b9df3692f861512fe6c9812f38b7471

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