{"api_version":"1","generated_at":"2026-07-27T03:09:58+00:00","cve":"CVE-2026-64321","urls":{"html":"https://cve.report/CVE-2026-64321","api":"https://cve.report/api/cve/CVE-2026-64321.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64321","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64321"},"summary":{"title":"nvme: target: rdma: fix ndev refcount leak on queue connect","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:13","updated_at":"2026-07-25 10:17:13"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/badc53620fe813b3a9f727ef9526f98567c2c898","name":"https://git.kernel.org/stable/c/badc53620fe813b3a9f727ef9526f98567c2c898","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5828517d17eda27f21d29ea14800c9e0a57bad11","name":"https://git.kernel.org/stable/c/5828517d17eda27f21d29ea14800c9e0a57bad11","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a8803c4f0ac3fa7df5551bbb5a8800c434a94357","name":"https://git.kernel.org/stable/c/a8803c4f0ac3fa7df5551bbb5a8800c434a94357","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d65fe42820b890a6a4644de0a95a812471f79ad3","name":"https://git.kernel.org/stable/c/d65fe42820b890a6a4644de0a95a812471f79ad3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64321","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64321","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 31deaeb11ba7a885116c9c30892b9f763c04d59c d65fe42820b890a6a4644de0a95a812471f79ad3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 31deaeb11ba7a885116c9c30892b9f763c04d59c a8803c4f0ac3fa7df5551bbb5a8800c434a94357 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 31deaeb11ba7a885116c9c30892b9f763c04d59c 5828517d17eda27f21d29ea14800c9e0a57bad11 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 31deaeb11ba7a885116c9c30892b9f763c04d59c badc53620fe813b3a9f727ef9526f98567c2c898 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.8","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.8 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.96 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.39 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.4 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64321","cve":"CVE-2026-64321","epss":"0.001680000","percentile":"0.064150000","score_date":"2026-07-26","updated_at":"2026-07-27 00:02:02"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"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"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.96","versionStartIncluding":"6.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.39","versionStartIncluding":"6.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.4","versionStartIncluding":"6.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc1","versionStartIncluding":"6.8","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-07-25T08:49:49.541Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64321","datePublished":"2026-07-25T08:49:49.541Z","dateReserved":"2026-07-19T15:36:31.780Z","dateUpdated":"2026-07-25T08:49:49.541Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-25 10:17:13","lastModifiedDate":"2026-07-25 10:17:13","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64321","Ordinal":"1","Title":"nvme: target: rdma: fix ndev refcount leak on queue connect","CVE":"CVE-2026-64321","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64321","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"nvme: target: rdma: fix ndev refcount leak on queue connect"}]}}}