CVE-2025-38567

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-38567", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:24.025Z", "datePublished": "2025-08-19T17:02:48.306Z", "dateUpdated": "2026-05-23T16:00:02.280Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T16:00:02.280Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: avoid ref leak in nfsd_open_local_fh()\n\nIf two calls to nfsd_open_local_fh() race and both successfully call\nnfsd_file_acquire_local(), they will both get an extra reference to the\nnet to accompany the file reference stored in *pnf.\n\nOne of them will fail to store (using xchg()) the file reference in\n*pnf and will drop that reference but WON'T drop the accompanying\nreference to the net. This leak means that when the nfs server is shut\ndown it will hang in nfsd_shutdown_net() waiting for\n&nn->nfsd_net_free_done.\n\nThis patch adds the missing nfsd_net_put()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/nfsd/localio.c"], "versions": [{"version": "986a21ace186433e0397a59491646edad8c8d636", "lessThan": "fcb0a417fddb605530c4837e0996620f8ed38023", "status": "affected", "versionType": "git"}, {"version": "e6f7e1487ab528a6c653bd0d42812ff2942846cd", "lessThan": "c4bf8f26c51e51bbb840935659a7b3b65a802c07", "status": "affected", "versionType": "git"}, {"version": "e6f7e1487ab528a6c653bd0d42812ff2942846cd", "lessThan": "e5a73150776f18547ee685c9f6bfafe549714899", "status": "affected", "versionType": "git"}, {"version": "6.15.3", "lessThan": "6.15.10", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/nfsd/localio.c"], "versions": [{"version": "6.16", "status": "affected"}, {"version": "0", "lessThan": "6.16", "status": "unaffected", "versionType": "semver"}, {"version": "6.15.10", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16.1", "lessThanOrEqual": "6.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17", "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": "6.15.3", "versionEndExcluding": "6.15.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "6.16.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "6.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/fcb0a417fddb605530c4837e0996620f8ed38023"}, {"url": "https://git.kernel.org/stable/c/c4bf8f26c51e51bbb840935659a7b3b65a802c07"}, {"url": "https://git.kernel.org/stable/c/e5a73150776f18547ee685c9f6bfafe549714899"}], "title": "nfsd: avoid ref leak in nfsd_open_local_fh()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/nfsd/localio.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "fcb0a417fddb605530c4837e0996620f8ed38023", "status": "affected", "version": "986a21ace186433e0397a59491646edad8c8d636", "versionType": "git"}, {"lessThan": "c4bf8f26c51e51bbb840935659a7b3b65a802c07", "status": "affected", "version": "e6f7e1487ab528a6c653bd0d42812ff2942846cd", "versionType": "git"}, {"lessThan": "e5a73150776f18547ee685c9f6bfafe549714899", "status": "affected", "version": "e6f7e1487ab528a6c653bd0d42812ff2942846cd", "versionType": "git"}, {"lessThan": "6.15.10", "status": "affected", "version": "6.15.3", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/nfsd/localio.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.16"}, {"lessThan": "6.16", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.15.*", "status": "unaffected", "version": "6.15.10", "versionType": "semver"}, {"lessThanOrEqual": "6.16.*", "status": "unaffected", "version": "6.16.1", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.17", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "60CB0AE3-957A-4077-BA02-EF637449A263", "versionEndExcluding": "6.15.10", "versionStartIncluding": "6.15.3", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:*:*:*:*:*:*:*", "matchCriteriaId": "D6BFC4F7-7099-4420-AF39-DD1CEABB8DF9", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*", "matchCriteriaId": "327D22EF-390B-454C-BD31-2ED23C998A1C", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: avoid ref leak in nfsd_open_local_fh()\n\nIf two calls to nfsd_open_local_fh() race and both successfully call\nnfsd_file_acquire_local(), they will both get an extra reference to the\nnet to accompany the file reference stored in *pnf.\n\nOne of them will fail to store (using xchg()) the file reference in\n*pnf and will drop that reference but WON'T drop the accompanying\nreference to the net. This leak means that when the nfs server is shut\ndown it will hang in nfsd_shutdown_net() waiting for\n&nn->nfsd_net_free_done.\n\nThis patch adds the missing nfsd_net_put()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nfsd: evitar fuga de referencia en nfsd_open_local_fh(). Si se ejecutan dos llamadas a nfsd_open_local_fh() y ambas invocan correctamente nfsd_file_acquire_local(), ambas obtendr\u00e1n una referencia adicional a la red que acompa\u00f1a a la referencia del archivo almacenada en *pnf. Una de ellas no almacenar\u00e1 (mediante xchg()) la referencia del archivo en *pnf y la eliminar\u00e1, pero NO eliminar\u00e1 la referencia que la acompa\u00f1a a la red. Esta fuga significa que, al apagar el servidor NFS, se bloquear\u00e1 en nfsd_shutdown_net() esperando &nn->nfsd_net_free_done. Este parche a\u00f1ade la funci\u00f3n nfsd_net_put() que faltaba."}], "id": "CVE-2025-38567", "lastModified": "2026-06-17T09:17:07.553", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-08-19T17:15:33.380", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c4bf8f26c51e51bbb840935659a7b3b65a802c07"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e5a73150776f18547ee685c9f6bfafe549714899"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fcb0a417fddb605530c4837e0996620f8ed38023"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: nfsd: avoid ref leak in nfsd_open_local_fh()", "id": "2389461", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2389461"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-38567", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not 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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-08-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38567\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38567\nhttps://lore.kernel.org/linux-cve-announce/2025081909-CVE-2025-38567-3597@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-08-21T12:31:37.015433+00:00", "updated": "2025-08-21T12:31:37.015490+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}