CVE-2025-38120

low-risk
Published 2025-07-03

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_set_pipapo_avx2: fix initial map fill If the first field doesn't cover the entire start map, then we must zero out the remainder, else we leak those bits into the next match round map. The early fix was incomplete and did only fix up the generic C implementation. A followup patch adds a test case to nft_concat_range.sh.

Do I need to act?

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0.05% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (2)

Affected Vendors

Debian Linux

References (8)

Patch https://git.kernel.org/stable/c/251496ce1728c9fd47bd2b20a7b21b20b9a020ca
Patch https://git.kernel.org/stable/c/39bab2d3517b5b50c609b4f8c66129bf619fffa0
Patch https://git.kernel.org/stable/c/8068e1e42b46518ce680dc6470bcd710efc3fa0a
Patch https://git.kernel.org/stable/c/8164d0efaf370c425dc69a1e8216940d09e7de0c
Patch https://git.kernel.org/stable/c/90bc7f5a244aadee4292b28098b7c98aadd4b3aa
Patch https://git.kernel.org/stable/c/b5ad58285f9217d68cd5ea2ad86ce254a3fe7c4d
Patch https://git.kernel.org/stable/c/ea77c397bff8b6d59f6d83dae1425b08f465e8b5
Third Party Advisory https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
25
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 7/34 · Low