This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

No data.

No data.

No data.

No data.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://lore.kernel.org/linux-cve-announce/2025021054-CVE-2025-21686-d416@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-21686 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-21686 cve-icon
History

Wed, 18 Jun 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics threat_severity

Moderate

 threat_severity

None

Tue, 20 May 2025 14:45:00 +0000

Type Values Removed Values Added
References

Tue, 20 May 2025 14:00:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: io_uring/rsrc: require cloned buffers to share accounting contexts When IORING_REGISTER_CLONE_BUFFERS is used to clone buffers from uring instance A to uring instance B, where A and B use different MMs for accounting, the accounting can go wrong: If uring instance A is closed before uring instance B, the pinned memory counters for uring instance B will be decremented, even though the pinned memory was originally accounted through uring instance A; so the MM of uring instance B can end up with negative locked memory. This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
Title io_uring/rsrc: require cloned buffers to share accounting contexts kernel: io_uring/rsrc: require cloned buffers to share accounting contexts

Tue, 11 Feb 2025 13:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Mon, 10 Feb 2025 16:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: io_uring/rsrc: require cloned buffers to share accounting contexts When IORING_REGISTER_CLONE_BUFFERS is used to clone buffers from uring instance A to uring instance B, where A and B use different MMs for accounting, the accounting can go wrong: If uring instance A is closed before uring instance B, the pinned memory counters for uring instance B will be decremented, even though the pinned memory was originally accounted through uring instance A; so the MM of uring instance B can end up with negative locked memory.
Title io_uring/rsrc: require cloned buffers to share accounting contexts
References
cve-icon MITRE

Status: REJECTED

Assigner: Linux

Published:

Updated: 2025-05-20T13:55:32.454Z

Reserved: 2024-12-29T08:45:45.740Z

Link: CVE-2025-21686

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Rejected

Published: 2025-02-10T16:15:38.100

Modified: 2025-05-20T14:15:48.270

Link: CVE-2025-21686

cve-icon Redhat

Severity :

Publid Date: 2025-02-10T00:00:00Z

Links: CVE-2025-21686 - Bugzilla

cve-icon OpenCVE Enrichment

No data.