Description
In the Linux kernel, the following vulnerability has been resolved:

nvmet-rdma: fix queue leak when connect backlog is exceeded

When pending disconnecting queues exceed the backlog limit, the
connect path only drops the device reference and leaks the newly
allocated queue and its IB resources.
Published: 2026-09-25
Score: n/a
EPSS: n/a
KEV: No
Impact: Memory/resource leak that can degrade kernel performance or lead to denial of service.
Action: Assess Impact
AI Analysis

Impact

An unpatched Linux kernel may leak kernel queues and their InfiniBand resources when the number of pending disconnecting queues exceeds the connect backlog limit. The leak occurs because the connect path drops the device reference but fails to deallocate the newly allocated queue, leaving residual kernel memory and IB resources unused. This uncontrolled resource consumption could ultimately exhaust available memory or IB resources, potentially causing the system to become unstable or unresponsive.

Affected Systems

The vulnerability affects the Linux kernel's NVMe over RDMA implementation. Users running any Linux distribution with default nvmet‑rdma support in the kernel are potentially impacted, regardless of kernel version, until the patch is applied.

Risk and Exploitability

The public CVE has no EPSS score and is not in the CISA KEV list, suggesting limited observed exploitation. The CVSS score is unspecified. The issue can be exploited only by an attacker with kernel access or with the ability to initiate numerous RDMA connect requests to saturate the backlog. Based on the description, it is inferred that a local user with sufficient privileges can trigger the condition, while remote exploitation would require privileged RDMA access or a vulnerable client. Therefore, the risk is moderate, but the leak can cause denial of service if the backlog is repeatedly exceeded.

Generated by OpenCVE AI on September 25, 2026 at 12:10 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade the kernel to a version that includes commit 186414a6a1a34e081b07e8873622f90402346235 or newer, which resolves the queue leak.
  • If upgrading is not immediately possible, disable nvmet‑rdma support or reduce the connect backlog limit in the kernel configuration to limit the number of pending disconnecting queues.
  • Implement kernel resource monitoring to detect abnormal allocation of NVMe RDMA queues and take corrective action or alert administrators.
  • Ensure that InfiniBand device drivers are up to date and apply any vendor‑specific patches that may mitigate similar resource leaks.

Generated by OpenCVE AI on September 25, 2026 at 12:10 UTC.

Tracking

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Advisories

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History

Fri, 25 Sep 2026 12:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-459

Fri, 25 Sep 2026 10:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: nvmet-rdma: fix queue leak when connect backlog is exceeded When pending disconnecting queues exceed the backlog limit, the connect path only drops the device reference and leaks the newly allocated queue and its IB resources.
Title nvmet-rdma: fix queue leak when connect backlog is exceeded
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-09-25T10:36:24.020Z

Reserved: 2026-09-25T10:25:14.320Z

Link: CVE-2026-98152

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-25T11:17:46.820

Modified: 2026-09-25T11:17:46.820

Link: CVE-2026-98152

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-25T12:15:16Z

Weaknesses