Description

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nft_set_pipapo: clamp maximum map bucket size to INT_MAX

Otherwise, it is possible to hit WARN_ON_ONCE in __kvmalloc_node_noprof()
when resizing hashtable because __GFP_NOWARN is unset.

Similar to:

b541ba7d1f5a ("netfilter: conntrack: clamp maximum hashtable size to INT_MAX")

Classification

CVE ID: CVE-2025-38201

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.02% (probability of being exploited)

EPSS Percentile: 2.46% (scored less or equal to compared to others)

EPSS Date: 2025-07-06 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-38201
https://git.kernel.org/stable/c/0ab3de047808f375a36cd345225572eb3366f3c6
https://git.kernel.org/stable/c/d2768016f091f8a5264076b433fd7c3fabb6eb97
https://git.kernel.org/stable/c/b85e3367a5716ed3662a4fe266525190d2af76df

Timeline