In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: fix region locking in hash types Region locking introduced in v5.6-rc4 contained three macros to handle the region locks: ahash_bucket_start(), ahash_bucket_end() which gave back the start and end hash bucket values belonging to a given region lock and ahash_region() which should give back the region lock belonging to a given hash bucket. The latter was incorrect which can lead to a race condition between the garbage collector and adding new elements when a hash type of set is defined with timeouts.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/00cfc5fad1491796942a948808afb968a0a3f35b cve-icon cve-icon
https://git.kernel.org/stable/c/226ce0ec38316d9e3739e73a64b6b8304646c658 cve-icon cve-icon
https://git.kernel.org/stable/c/6e002ecc1c8cfdfc866b9104ab7888da54613e59 cve-icon cve-icon
https://git.kernel.org/stable/c/82c1eb32693bc48251d92532975e19160987e5b9 cve-icon cve-icon
https://git.kernel.org/stable/c/8478a729c0462273188263136880480729e9efca cve-icon cve-icon
https://git.kernel.org/stable/c/a3dfec485401943e315c394c29afe2db8f9481d6 cve-icon cve-icon
https://git.kernel.org/stable/c/aa77294b0f73bb8265987591460cd25b8722c3df cve-icon cve-icon
https://git.kernel.org/stable/c/e2ab67672b2288521a6146034a971f9a82ffc5c5 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025052902-CVE-2025-37997-2c6c@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-37997 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-37997 cve-icon
History

Wed, 04 Jun 2025 13:00:00 +0000

Type Values Removed Values Added
References

Fri, 30 May 2025 21:45:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

Thu, 29 May 2025 13:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: fix region locking in hash types Region locking introduced in v5.6-rc4 contained three macros to handle the region locks: ahash_bucket_start(), ahash_bucket_end() which gave back the start and end hash bucket values belonging to a given region lock and ahash_region() which should give back the region lock belonging to a given hash bucket. The latter was incorrect which can lead to a race condition between the garbage collector and adding new elements when a hash type of set is defined with timeouts.
Title netfilter: ipset: fix region locking in hash types
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-06-04T12:57:44.619Z

Reserved: 2025-04-16T04:51:23.976Z

Link: CVE-2025-37997

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-05-29T14:15:36.317

Modified: 2025-06-04T13:15:28.513

Link: CVE-2025-37997

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-05-29T00:00:00Z

Links: CVE-2025-37997 - Bugzilla