Tracker / CVE-2025-21826
CVE-2025-21826
High 7.8
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.
Affected products and versions
| 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 · 6.13 → 6.13.2 |
| linux | linux_kernel · 6.6.14 → 6.6.76 |
| linux | linux_kernel · 6.7.2 → 6.12.13 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.