CVE-2025-38162: linux
Vulnerability summary
CVE-2025-38162 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.5% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 34 · Related 34Timeline
- 03-07-2025PublishedVulnerability first disclosed.
- 15-10-2026Last modifiedVulnerability information updated.
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 metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
0.18%
Chance of exploitation in the next 30 days
Percentile
8%
Versus all other CVEs
30-day change
+0.03 pp
From 0.16% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Ubuntu134 products
- linuxAll versions (No fix recorded) | < 6.8.0-100.100
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 6.8.0-1046.49
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 3c4287f62044a90e73a561aa05fc46e62da173da, < 91edc076439c9e2f34b176149f1c84a47a8ec32f | ≥ 3c4287f62044a90e73a561aa05fc46e62da173da, < a9e757473561da93c6a4136f0e59aba91ec777fc | ≥ 3c4287f62044a90e73a561aa05fc46e62da173da, < c1360ac8156c0a3f2385baef91d8d26fd9d39701 | ≥ 3c4287f62044a90e73a561aa05fc46e62da173da, < 43fe1181f738295624696ae9ff611790edb65b5e | ≥ 3c4287f62044a90e73a561aa05fc46e62da173da, < 4c5c6aa9967dbe55bd017bb509885928d0f31206 | 5.6
- linux_kernel≥ 5.6, < 6.12.34 | ≥ 6.13, < 6.15.3
Debian1 product
- linux< 6.1.170-1 | < 6.12.35-1
3 vendors · 137 products
