{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64321", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.780Z", "datePublished": "2026-07-25T08:49:49.541Z", "dateUpdated": "2026-07-25T08:49:49.541Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-25T08:49:49.541Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme: target: rdma: fix ndev refcount leak on queue connect\n\nnvmet_rdma_queue_connect() calls nvmet_rdma_find_get_device() which\nacquires a reference on the returned ndev via kref_get(). On the path\nwhere the host queue backlog is exceeded and the function returns\nNVME_SC_CONNECT_CTRL_BUSY, reference of ndev is not released, leaking\nthe kref.\n\nFix this by adding a goto to the existing put_device label before the\nearly return."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nvme/target/rdma.c"], "versions": [{"version": "31deaeb11ba7a885116c9c30892b9f763c04d59c", "lessThan": "d65fe42820b890a6a4644de0a95a812471f79ad3", "status": "affected", "versionType": "git"}, {"version": "31deaeb11ba7a885116c9c30892b9f763c04d59c", "lessThan": "a8803c4f0ac3fa7df5551bbb5a8800c434a94357", "status": "affected", "versionType": "git"}, {"version": "31deaeb11ba7a885116c9c30892b9f763c04d59c", "lessThan": "5828517d17eda27f21d29ea14800c9e0a57bad11", "status": "affected", "versionType": "git"}, {"version": "31deaeb11ba7a885116c9c30892b9f763c04d59c", "lessThan": "badc53620fe813b3a9f727ef9526f98567c2c898", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nvme/target/rdma.c"], "versions": [{"version": "6.8", "status": "affected"}, {"version": "0", "lessThan": "6.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.96", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.4", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.12.96"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.18.39"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "7.1.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "7.2-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d65fe42820b890a6a4644de0a95a812471f79ad3"}, {"url": "https://git.kernel.org/stable/c/a8803c4f0ac3fa7df5551bbb5a8800c434a94357"}, {"url": "https://git.kernel.org/stable/c/5828517d17eda27f21d29ea14800c9e0a57bad11"}, {"url": "https://git.kernel.org/stable/c/badc53620fe813b3a9f727ef9526f98567c2c898"}], "title": "nvme: target: rdma: fix ndev refcount leak on queue connect", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/nvme/target/rdma.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "d65fe42820b890a6a4644de0a95a812471f79ad3", "status": "affected", "version": "31deaeb11ba7a885116c9c30892b9f763c04d59c", "versionType": "git"}, {"lessThan": "a8803c4f0ac3fa7df5551bbb5a8800c434a94357", "status": "affected", "version": "31deaeb11ba7a885116c9c30892b9f763c04d59c", "versionType": "git"}, {"lessThan": "5828517d17eda27f21d29ea14800c9e0a57bad11", "status": "affected", "version": "31deaeb11ba7a885116c9c30892b9f763c04d59c", "versionType": "git"}, {"lessThan": "badc53620fe813b3a9f727ef9526f98567c2c898", "status": "affected", "version": "31deaeb11ba7a885116c9c30892b9f763c04d59c", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/nvme/target/rdma.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.8"}, {"lessThan": "6.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.96", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.39", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2-rc1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme: target: rdma: fix ndev refcount leak on queue connect\n\nnvmet_rdma_queue_connect() calls nvmet_rdma_find_get_device() which\nacquires a reference on the returned ndev via kref_get(). On the path\nwhere the host queue backlog is exceeded and the function returns\nNVME_SC_CONNECT_CTRL_BUSY, reference of ndev is not released, leaking\nthe kref.\n\nFix this by adding a goto to the existing put_device label before the\nearly return."}], "id": "CVE-2026-64321", "lastModified": "2026-08-11T15:00:57.447", "metrics": {}, "published": "2026-07-25T10:17:13.530", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5828517d17eda27f21d29ea14800c9e0a57bad11"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a8803c4f0ac3fa7df5551bbb5a8800c434a94357"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/badc53620fe813b3a9f727ef9526f98567c2c898"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d65fe42820b890a6a4644de0a95a812471f79ad3"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: nvme: target: rdma: fix ndev refcount leak on queue connect", "id": "2507299", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507299"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-911", "details": ["A flaw was found in the NVMe over RDMA (nvmet_rdma) target in the Linux kernel. When a host queue backlog is exceeded during a connection attempt, a reference count (kref) is not properly released. This oversight can lead to a resource exhaustion vulnerability, potentially allowing a remote attacker to cause a Denial of Service (DoS) by depleting system resources."], "name": "CVE-2026-64321", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "impact": "moderate", "package_name": "erlang27", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64321\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64321\nhttps://lore.kernel.org/linux-cve-announce/2026072511-CVE-2026-64321-4f63@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[31deaeb11ba7a885116c9c30892b9f763c04d59c,d65fe42820b890a6a4644de0a95a812471f79ad3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[31deaeb11ba7a885116c9c30892b9f763c04d59c,a8803c4f0ac3fa7df5551bbb5a8800c434a94357)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[31deaeb11ba7a885116c9c30892b9f763c04d59c,5828517d17eda27f21d29ea14800c9e0a57bad11)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[31deaeb11ba7a885116c9c30892b9f763c04d59c,badc53620fe813b3a9f727ef9526f98567c2c898)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.8"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.8)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.96,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.39,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.4,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-07-25T14:00:20.410729+00:00", "updated": "2026-08-03T19:30:04.376623+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}