CVE-2025-38162
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-07-03

Last updated on: 2026-03-25

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_set_pipapo: prevent overflow in lookup table allocation When calculating the lookup table size, ensure the following multiplication does not overflow: - desc->field_len[] maximum value is U8_MAX multiplied by NFT_PIPAPO_GROUPS_PER_BYTE(f) that can be 2, worst case. - NFT_PIPAPO_BUCKETS(f->bb) is 2^8, worst case. - sizeof(unsigned long), from sizeof(*f->lt), lt in struct nft_pipapo_field. Then, use check_mul_overflow() to multiply by bucket size and then use check_add_overflow() to the alignment for avx2 (if needed). Finally, add lt_size_check_overflow() helper and use it to consolidate this. While at it, replace leftover allocation using the GFP_KERNEL to GFP_KERNEL_ACCOUNT for consistency, in pipapo_resize().
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2025-07-03
Last Modified
2026-03-25
Generated
2026-05-07
AI Q&A
2025-07-03
EPSS Evaluated
2026-05-05
NVD
CVE-2025-38162
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-NVD-CWE-noinfo
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability in the Linux kernel's netfilter component involves a potential overflow during the allocation of a lookup table in nft_set_pipapo. Specifically, when calculating the size of the lookup table, certain multiplications could overflow, leading to incorrect memory allocation. The fix ensures that these multiplications and additions are checked for overflow using functions like check_mul_overflow() and check_add_overflow(), preventing potential memory issues.


How can this vulnerability impact me? :

If exploited, this vulnerability could lead to memory allocation errors such as buffer overflows, which might cause system instability, crashes, or potentially allow an attacker to execute arbitrary code or escalate privileges on the affected system.


Ask Our AI Assistant
Need more information? Ask your question to get an AI reply (Powered by our expertise)
0/70
EPSS Chart