{"api_version":"1","generated_at":"2026-09-15T02:59:49+00:00","cve":"CVE-2024-42152","urls":{"html":"https://cve.report/CVE-2024-42152","api":"https://cve.report/api/cve/CVE-2024-42152.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2024-42152","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2024-42152"},"summary":{"title":"nvmet: fix a possible leak when destroy a ctrl during qp establishment","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: fix a possible leak when destroy a ctrl during qp establishment\n\nIn nvmet_sq_destroy we capture sq->ctrl early and if it is non-NULL we\nknow that a ctrl was allocated (in the admin connect request handler)\nand we need to release pending AERs, clear ctrl->sqs and sq->ctrl\n(for nvme-loop primarily), and drop the final reference on the ctrl.\n\nHowever, a small window is possible where nvmet_sq_destroy starts (as\na result of the client giving up and disconnecting) concurrently with\nthe nvme admin connect cmd (which may be in an early stage). But *before*\nkill_and_confirm of sq->ref (i.e. the admin connect managed to get an sq\nlive reference). In this case, sq->ctrl was allocated however after it was\ncaptured in a local variable in nvmet_sq_destroy.\nThis prevented the final reference drop on the ctrl.\n\nSolve this by re-capturing the sq->ctrl after all inflight request has\ncompleted, where for sure sq->ctrl reference is final, and move forward\nbased on that.\n\nThis issue was observed in an environment with many hosts connecting\nmultiple ctrls simoutanuosly, creating a delay in allocating a ctrl\nleading up to this race window.","state":"PUBLISHED","assigner":"Linux","published_at":"2024-07-30 08:15:06","updated_at":"2026-08-04 11:19:38"},"problem_types":["CWE-401"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"4.7","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":4.7,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}},{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.5","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.5","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","data":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/818004f2a380420c19872171be716174d4985e33","name":"https://git.kernel.org/stable/c/818004f2a380420c19872171be716174d4985e33","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5502c1f1d0d7472706cc1f201aecf1c935d302d1","name":"https://git.kernel.org/stable/c/5502c1f1d0d7472706cc1f201aecf1c935d302d1","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2f3c22b1d3d7e86712253244797a651998c141fa","name":"https://git.kernel.org/stable/c/2f3c22b1d3d7e86712253244797a651998c141fa","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b4fed1443a6571d49c6ffe7d97af3bbe5ee6dff5","name":"https://git.kernel.org/stable/c/b4fed1443a6571d49c6ffe7d97af3bbe5ee6dff5","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c758b77d4a0a0ed3a1292b3fd7a2aeccd1a169a4","name":"https://git.kernel.org/stable/c/c758b77d4a0a0ed3a1292b3fd7a2aeccd1a169a4","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html","name":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/940a71f08ef153ef807f751310b0648d1fa5d0da","name":"https://git.kernel.org/stable/c/940a71f08ef153ef807f751310b0648d1fa5d0da","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-42152","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-42152","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a 2f3c22b1d3d7e86712253244797a651998c141fa git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a b4fed1443a6571d49c6ffe7d97af3bbe5ee6dff5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a 940a71f08ef153ef807f751310b0648d1fa5d0da git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a 5502c1f1d0d7472706cc1f201aecf1c935d302d1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a 818004f2a380420c19872171be716174d4985e33 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a c758b77d4a0a0ed3a1292b3fd7a2aeccd1a169a4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.6","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.6 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.222 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.163 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.98 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.39 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.9.9 6.9.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.10 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2024","cve_id":"42152","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"providerMetadata":{"dateUpdated":"2025-11-03T22:02:15.586Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"tags":["x_transferred"],"url":"https://git.kernel.org/stable/c/2f3c22b1d3d7e86712253244797a651998c141fa"},{"tags":["x_transferred"],"url":"https://git.kernel.org/stable/c/b4fed1443a6571d49c6ffe7d97af3bbe5ee6dff5"},{"tags":["x_transferred"],"url":"https://git.kernel.org/stable/c/940a71f08ef153ef807f751310b0648d1fa5d0da"},{"tags":["x_transferred"],"url":"https://git.kernel.org/stable/c/5502c1f1d0d7472706cc1f201aecf1c935d302d1"},{"tags":["x_transferred"],"url":"https://git.kernel.org/stable/c/818004f2a380420c19872171be716174d4985e33"},{"tags":["x_transferred"],"url":"https://git.kernel.org/stable/c/c758b77d4a0a0ed3a1292b3fd7a2aeccd1a169a4"},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}],"title":"CVE Program Container"},{"metrics":[{"other":{"content":{"id":"CVE-2024-42152","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2024-09-10T16:15:21.603444Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2024-09-11T17:34:34.451Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/nvme/target/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2f3c22b1d3d7e86712253244797a651998c141fa","status":"affected","version":"0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a","versionType":"git"},{"lessThan":"b4fed1443a6571d49c6ffe7d97af3bbe5ee6dff5","status":"affected","version":"0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a","versionType":"git"},{"lessThan":"940a71f08ef153ef807f751310b0648d1fa5d0da","status":"affected","version":"0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a","versionType":"git"},{"lessThan":"5502c1f1d0d7472706cc1f201aecf1c935d302d1","status":"affected","version":"0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a","versionType":"git"},{"lessThan":"818004f2a380420c19872171be716174d4985e33","status":"affected","version":"0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a","versionType":"git"},{"lessThan":"c758b77d4a0a0ed3a1292b3fd7a2aeccd1a169a4","status":"affected","version":"0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/nvme/target/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.6"},{"lessThan":"5.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.222","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.163","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.98","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.39","versionType":"semver"},{"lessThanOrEqual":"6.9.*","status":"unaffected","version":"6.9.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.10","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.222","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.163","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.98","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.39","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.9.9","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.10","versionStartIncluding":"5.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: fix a possible leak when destroy a ctrl during qp establishment\n\nIn nvmet_sq_destroy we capture sq->ctrl early and if it is non-NULL we\nknow that a ctrl was allocated (in the admin connect request handler)\nand we need to release pending AERs, clear ctrl->sqs and sq->ctrl\n(for nvme-loop primarily), and drop the final reference on the ctrl.\n\nHowever, a small window is possible where nvmet_sq_destroy starts (as\na result of the client giving up and disconnecting) concurrently with\nthe nvme admin connect cmd (which may be in an early stage). But *before*\nkill_and_confirm of sq->ref (i.e. the admin connect managed to get an sq\nlive reference). In this case, sq->ctrl was allocated however after it was\ncaptured in a local variable in nvmet_sq_destroy.\nThis prevented the final reference drop on the ctrl.\n\nSolve this by re-capturing the sq->ctrl after all inflight request has\ncompleted, where for sure sq->ctrl reference is final, and move forward\nbased on that.\n\nThis issue was observed in an environment with many hosts connecting\nmultiple ctrls simoutanuosly, creating a delay in allocating a ctrl\nleading up to this race window."}],"metrics":[{"cvssV3_1":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-08-04T09:28:59.894Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/2f3c22b1d3d7e86712253244797a651998c141fa"},{"url":"https://git.kernel.org/stable/c/b4fed1443a6571d49c6ffe7d97af3bbe5ee6dff5"},{"url":"https://git.kernel.org/stable/c/940a71f08ef153ef807f751310b0648d1fa5d0da"},{"url":"https://git.kernel.org/stable/c/5502c1f1d0d7472706cc1f201aecf1c935d302d1"},{"url":"https://git.kernel.org/stable/c/818004f2a380420c19872171be716174d4985e33"},{"url":"https://git.kernel.org/stable/c/c758b77d4a0a0ed3a1292b3fd7a2aeccd1a169a4"}],"title":"nvmet: fix a possible leak when destroy a ctrl during qp establishment","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2024-42152","datePublished":"2024-07-30T07:46:44.795Z","dateReserved":"2024-07-29T15:50:41.193Z","dateUpdated":"2026-08-04T09:28:59.894Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2024-07-30 08:15:06","lastModifiedDate":"2026-08-04 11:19:38","problem_types":["CWE-401"],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":4.7,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2024-09-10T16:15:21.603444Z","id":"CVE-2024-42152","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"5.10.222","matchCriteriaId":"6A024C9F-1F70-4EB4-B7D0-432011590CAB"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.163","matchCriteriaId":"A97DEB09-4927-40F8-B5C6-F5BD5EAE0CFD"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.98","matchCriteriaId":"E09E92A5-27EF-40E4-926A-B1CDC8270551"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.39","matchCriteriaId":"29E894E4-668F-4DB0-81F7-4FB5F698E970"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.9.9","matchCriteriaId":"ADCC1407-0CB3-4C8F-B4C5-07F682CD7085"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*","matchCriteriaId":"2EBB4392-5FA6-4DA9-9772-8F9C750109FA"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2024","CveId":"42152","Ordinal":"1","Title":"nvmet: fix a possible leak when destroy a ctrl during qp establi","CVE":"CVE-2024-42152","Year":"2024"},"notes":[{"CveYear":"2024","CveId":"42152","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: fix a possible leak when destroy a ctrl during qp establishment\n\nIn nvmet_sq_destroy we capture sq->ctrl early and if it is non-NULL we\nknow that a ctrl was allocated (in the admin connect request handler)\nand we need to release pending AERs, clear ctrl->sqs and sq->ctrl\n(for nvme-loop primarily), and drop the final reference on the ctrl.\n\nHowever, a small window is possible where nvmet_sq_destroy starts (as\na result of the client giving up and disconnecting) concurrently with\nthe nvme admin connect cmd (which may be in an early stage). But *before*\nkill_and_confirm of sq->ref (i.e. the admin connect managed to get an sq\nlive reference). In this case, sq->ctrl was allocated however after it was\ncaptured in a local variable in nvmet_sq_destroy.\nThis prevented the final reference drop on the ctrl.\n\nSolve this by re-capturing the sq->ctrl after all inflight request has\ncompleted, where for sure sq->ctrl reference is final, and move forward\nbased on that.\n\nThis issue was observed in an environment with many hosts connecting\nmultiple ctrls simoutanuosly, creating a delay in allocating a ctrl\nleading up to this race window.","Type":"Description","Title":"nvmet: fix a possible leak when destroy a ctrl during qp establi"}]}}}