{"api_version":"1","generated_at":"2026-07-23T11:18:08+00:00","cve":"CVE-2026-53398","urls":{"html":"https://cve.report/CVE-2026-53398","api":"https://cve.report/api/cve/CVE-2026-53398.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53398","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53398"},"summary":{"title":"NFSD: Fix SECINFO_NO_NAME decode error cleanup","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nNFSD: Fix SECINFO_NO_NAME decode error cleanup\n\nnfsd4_decode_secinfo_no_name() currently initializes sin_exp after\ndecoding sin_style. If the XDR stream is truncated, the decoder returns\nnfserr_bad_xdr before sin_exp is initialized.\n\nSince commit 3fdc54646234 (\"NFSD: Reduce amount of struct\nnfsd4_compoundargs that needs clearing\"), the inline iops array is not\ncleared between RPC calls. A failed SECINFO_NO_NAME decode can therefore\nleave sin_exp holding stale union contents from a previous operation.\n\nThe error response path still invokes nfsd4_secinfo_no_name_release(),\nwhich calls exp_put() on a non-NULL sin_exp.\n\nInitialize sin_exp before the first failable decode step, matching\nnfsd4_decode_secinfo().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 12:16:50","updated_at":"2026-07-20 15:16:42"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/5ec37edcb534f3fc92304be236d37f08e6545585","name":"https://git.kernel.org/stable/c/5ec37edcb534f3fc92304be236d37f08e6545585","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/161d1aaeb04d620d3692639700512bb5038c1e10","name":"https://git.kernel.org/stable/c/161d1aaeb04d620d3692639700512bb5038c1e10","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1e04be34cafae119e82bcaccd6d28a20f72a3647","name":"https://git.kernel.org/stable/c/1e04be34cafae119e82bcaccd6d28a20f72a3647","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/46eb17d45be69d28c7a23ea03283b207426a8232","name":"https://git.kernel.org/stable/c/46eb17d45be69d28c7a23ea03283b207426a8232","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9e18e83b8846a5c3fe13fc8a464b4865d33996c6","name":"https://git.kernel.org/stable/c/9e18e83b8846a5c3fe13fc8a464b4865d33996c6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c8a24effd96d4779e2ad779654682304491c55a5","name":"https://git.kernel.org/stable/c/c8a24effd96d4779e2ad779654682304491c55a5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8836405abdc53ca3dd5fc68b2cf6f8f012fad011","name":"https://git.kernel.org/stable/c/8836405abdc53ca3dd5fc68b2cf6f8f012fad011","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/49de5d31dd8fdebf78bdeaf196b0ca5cd5c75439","name":"https://git.kernel.org/stable/c/49de5d31dd8fdebf78bdeaf196b0ca5cd5c75439","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53398","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53398","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5e76b25d7cc82c148d391c0c43b884e6427cb302 8836405abdc53ca3dd5fc68b2cf6f8f012fad011 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 07b68ff5c71cf4ed5443016d8eb116863c0a4d88 49de5d31dd8fdebf78bdeaf196b0ca5cd5c75439 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3fdc546462348b8a497c72bc894e0cde9f10fc40 5ec37edcb534f3fc92304be236d37f08e6545585 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3fdc546462348b8a497c72bc894e0cde9f10fc40 1e04be34cafae119e82bcaccd6d28a20f72a3647 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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the Linux kernel, the following vulnerability has been resolved:\n\nNFSD: Fix SECINFO_NO_NAME decode error cleanup\n\nnfsd4_decode_secinfo_no_name() currently initializes sin_exp after\ndecoding sin_style. If the XDR stream is truncated, the decoder returns\nnfserr_bad_xdr before sin_exp is initialized.\n\nSince commit 3fdc54646234 (\"NFSD: Reduce amount of struct\nnfsd4_compoundargs that needs clearing\"), the inline iops array is not\ncleared between RPC calls. A failed SECINFO_NO_NAME decode can therefore\nleave sin_exp holding stale union contents from a previous operation.\n\nThe error response path still invokes nfsd4_secinfo_no_name_release(),\nwhich calls exp_put() on a non-NULL sin_exp.\n\nInitialize sin_exp before the first failable decode step, matching\nnfsd4_decode_secinfo()."}],"metrics":[{"cvssV3_1":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-07-20T13:40:00.661Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/8836405abdc53ca3dd5fc68b2cf6f8f012fad011"},{"url":"https://git.kernel.org/stable/c/49de5d31dd8fdebf78bdeaf196b0ca5cd5c75439"},{"url":"https://git.kernel.org/stable/c/5ec37edcb534f3fc92304be236d37f08e6545585"},{"url":"https://git.kernel.org/stable/c/1e04be34cafae119e82bcaccd6d28a20f72a3647"},{"url":"https://git.kernel.org/stable/c/161d1aaeb04d620d3692639700512bb5038c1e10"},{"url":"https://git.kernel.org/stable/c/c8a24effd96d4779e2ad779654682304491c55a5"},{"url":"https://git.kernel.org/stable/c/46eb17d45be69d28c7a23ea03283b207426a8232"},{"url":"https://git.kernel.org/stable/c/9e18e83b8846a5c3fe13fc8a464b4865d33996c6"}],"title":"NFSD: Fix SECINFO_NO_NAME decode error cleanup","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-53398","datePublished":"2026-07-19T12:01:59.507Z","dateReserved":"2026-06-09T07:44:35.402Z","dateUpdated":"2026-07-20T13:40:00.661Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 12:16:50","lastModifiedDate":"2026-07-20 15:16:42","problem_types":[],"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:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"53398","Ordinal":"1","Title":"NFSD: Fix SECINFO_NO_NAME decode error cleanup","CVE":"CVE-2026-53398","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53398","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nNFSD: Fix SECINFO_NO_NAME decode error cleanup\n\nnfsd4_decode_secinfo_no_name() currently initializes sin_exp after\ndecoding sin_style. If the XDR stream is truncated, the decoder returns\nnfserr_bad_xdr before sin_exp is initialized.\n\nSince commit 3fdc54646234 (\"NFSD: Reduce amount of struct\nnfsd4_compoundargs that needs clearing\"), the inline iops array is not\ncleared between RPC calls. A failed SECINFO_NO_NAME decode can therefore\nleave sin_exp holding stale union contents from a previous operation.\n\nThe error response path still invokes nfsd4_secinfo_no_name_release(),\nwhich calls exp_put() on a non-NULL sin_exp.\n\nInitialize sin_exp before the first failable decode step, matching\nnfsd4_decode_secinfo().","Type":"Description","Title":"NFSD: Fix SECINFO_NO_NAME decode error cleanup"}]}}}