CVE-2025-21826 - Linux Netfilter nf_tables Pipapo Width Mismatch Vulnerability

CVE-2025-21826 - Linux Netfilter nf_tables Pipapo Width Mismatch Vulnerability

https://cvefeed.io/rssfeed/latest.atom / Thu, 03/06/2025 - 19:28
CVE ID : CVE-2025-21826
Published : March 6, 2025, 4:15 p.m. | 14 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: reject mismatching sum of field_len with set key length The field length description provides the length of each separated key field in the concatenation, each field gets rounded up to 32-bits to calculate the pipapo rule width from pipapo_init(). The set key length provides the total size of the key aligned to 32-bits. Register-based arithmetics still allows for combining mismatching set key length and field length description, eg. set key length 10 and field description [ 5, 4 ] leading to pipapo width of 12.
Severity: 0.0 | NA
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