Answer in brief
CVE-2026-64321 records a Medium severity (CVSS 5.5) vulnerability in nvme: target: rdma: fix ndev refcount leak on queue connect. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=31deaeb11ba7a885116c9c30892b9f763c04d59c <d65fe42820b890a6a4644de0a95a812471f79ad3 || >=31deaeb11ba7a885116c9c30892b9f763c04d59c <a8803c4f0ac3fa7df5551bbb5a8800c434a94357 || >=31deaeb11ba7a885116c9c30892b9f763c04d59c <5828517d17eda27f21d29ea14800c9e0a57bad11 || >=31deaeb11ba7a885116c9c30892b9f763c04d59c <badc53620fe813b3a9f727ef9526f98567c2c898 | d65fe42820b890a6a4644de0a95a812471f79ad3, a8803c4f0ac3fa7df5551bbb5a8800c434a94357, 5828517d17eda27f21d29ea14800c9e0a57bad11, badc53620fe813b3a9f727ef9526f98567c2c898 |
| Linux/Linuxgeneric | 6.8 | Not reported |
| Linux/Linuxgeneric | >=28877977bbc4f44dd3068b74ee781466c597a3b3 <204b9645536bb4a77a2cb35e6519dbf9f4ea1665 || >=bd3f40fdec552f9200e7b8521ef02b578c9ee8b0 <00eaa58988d35fd47ca8811f7f72871591f61ffb || >=85a79da286b65ae2238a22ac901a0039779e613e <712f3268a62d0df98a7ee991cba963ced2e58007 || >=31deaeb11ba7a885116c9c30892b9f763c04d59c <d65fe42820b890a6a4644de0a95a812471f79ad3 || >=31deaeb11ba7a885116c9c30892b9f763c04d59c <a8803c4f0ac3fa7df5551bbb5a8800c434a94357 || >=31deaeb11ba7a885116c9c30892b9f763c04d59c <5828517d17eda27f21d29ea14800c9e0a57bad11 || >=31deaeb11ba7a885116c9c30892b9f763c04d59c <badc53620fe813b3a9f727ef9526f98567c2c898 | 204b9645536bb4a77a2cb35e6519dbf9f4ea1665, 00eaa58988d35fd47ca8811f7f72871591f61ffb, 712f3268a62d0df98a7ee991cba963ced2e58007, d65fe42820b890a6a4644de0a95a812471f79ad3, a8803c4f0ac3fa7df5551bbb5a8800c434a94357, 5828517d17eda27f21d29ea14800c9e0a57bad11, badc53620fe813b3a9f727ef9526f98567c2c898 |
Published upstream
Jul 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 11, 2026
In the Linux kernel, the following vulnerability has been resolved: nvme: target: rdma: fix ndev refcount leak on queue connect nvmet_rdma_queue_connect() calls nvmet_rdma_find_get_device() which acquires a reference on the returned ndev via kref_get(). On the path where the host queue backlog is exceeded and the function returns NVME_SC_CONNECT_CTRL_BUSY, reference of ndev is not released, leaking the kref. Fix this by adding a goto to the existing put_device label before the early return.
Quoted source text, attributed separately from HOL analysis.