CVE-2025-38120

netfilter: nf_set_pipapo_avx2: fix initial map fill

State: Published
Severity: 9.4 Critical
Published: Jul 3, 2025
Updated: Oct 15, 2026
Reserved: Apr 16, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	9.4 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	77bf0c4ab928ca4c9a99311f4f70ba0c17fecba9 to before 8164d0efaf370c425dc69a1e8216940d09e7de0cAffected 957a4d1c4c5849e4515c9fb4db21bf85318103dc to before b5ad58285f9217d68cd5ea2ad86ce254a3fe7c4dAffected 9625c46ce6fd4f922595a4b32b1de5066d70464f to before 90bc7f5a244aadee4292b28098b7c98aadd4b3aaAffected 69b6a67f7052905e928d75a0c5871de50e686986 to before 39bab2d3517b5b50c609b4f8c66129bf619fffa0Affected 791a615b7ad2258c560f91852be54b0480837c93 to before 251496ce1728c9fd47bd2b20a7b21b20b9a020caAffected 791a615b7ad2258c560f91852be54b0480837c93 to before 8068e1e42b46518ce680dc6470bcd710efc3fa0aAffected 791a615b7ad2258c560f91852be54b0480837c93 to before ea77c397bff8b6d59f6d83dae1425b08f465e8b5Affected 8058c88ac0df21239daee54b5934d5c80ca9685fAffected 5.15.165 to before 5.15.186Affected 6.1.103 to before 6.1.142Affected 6.6.44 to before 6.6.94Affected 6.10.3 to before 6.11Affected
LinuxLinux	6.11Affected before 6.11Not affected 5.15.186 through 5.15.Not affected 6.1.142 through 6.1.Not affected 6.6.94 through 6.6.Not affected 6.12.34 through 6.12.Not affected 6.15.3 through 6.15.*Not affected 6.16 and laterNot affected

Product

Versions

LinuxLinux

77bf0c4ab928ca4c9a99311f4f70ba0c17fecba9 to before 8164d0efaf370c425dc69a1e8216940d09e7de0cAffected
957a4d1c4c5849e4515c9fb4db21bf85318103dc to before b5ad58285f9217d68cd5ea2ad86ce254a3fe7c4dAffected
9625c46ce6fd4f922595a4b32b1de5066d70464f to before 90bc7f5a244aadee4292b28098b7c98aadd4b3aaAffected
69b6a67f7052905e928d75a0c5871de50e686986 to before 39bab2d3517b5b50c609b4f8c66129bf619fffa0Affected
791a615b7ad2258c560f91852be54b0480837c93 to before 251496ce1728c9fd47bd2b20a7b21b20b9a020caAffected
791a615b7ad2258c560f91852be54b0480837c93 to before 8068e1e42b46518ce680dc6470bcd710efc3fa0aAffected
791a615b7ad2258c560f91852be54b0480837c93 to before ea77c397bff8b6d59f6d83dae1425b08f465e8b5Affected
8058c88ac0df21239daee54b5934d5c80ca9685fAffected
5.15.165 to before 5.15.186Affected
6.1.103 to before 6.1.142Affected
6.6.44 to before 6.6.94Affected
6.10.3 to before 6.11Affected

LinuxLinux

6.11Affected
before 6.11Not affected
5.15.186 through 5.15.*Not affected
6.1.142 through 6.1.*Not affected
6.6.94 through 6.6.*Not affected
6.12.34 through 6.12.*Not affected
6.15.3 through 6.15.*Not affected
6.16 and laterNot affected

References

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