CVE-2024-42070
netfilter: nf_tables: fully validate NFT_DATA_VALUE on store to data registers
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Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fully validate NFT_DATA_VALUE on store to data registers register store validation for NFT_DATA_VALUE is conditional, however, the datatype is always either NFT_DATA_VALUE or NFT_DATA_VERDICT. This only requires a new helper function to infer the register type from the set datatype so this conditional check can be removed. Otherwise, pointer to chain object can be leaked through the registers.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/23752737c6a618e994f9a310ec2568881a6b49c4
- https://git.kernel.org/stable/c/40188a25a9847dbeb7ec67517174a835a677752f
- https://git.kernel.org/stable/c/41a6375d48deaf7f730304b5153848bfa1c2980f
- https://git.kernel.org/stable/c/461302e07f49687ffe7d105fa0a330c07c7646d8
- https://git.kernel.org/stable/c/5d43d789b57943720dca4181a05f6477362b94cf
References (12)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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