CVE-2025-21826

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.

• linux linux kernel (>= 5.10.209 < 5.10.235) • linux linux kernel (>= 5.15.148 < 5.15.179) • linux linux kernel (>= 6.1.75 < 6.1.129) • linux linux kernel (>= 6.6.14 < 6.6.76) • linux linux kernel (>= 6.7.2 < 6.12.13) • linux linux kernel (>= 6.13 < 6.13.2)