{"id":"CVE-2026-53398","revision":"c3c008aefe8e451e88e0df65b109029f","records":[{"revision":"c3c008aefe8e451e88e0df65b109029f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-53398","aliases":[],"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":0,"publishedAt":"2026-07-19T12:01:59.507+00:00","modifiedAt":"2026-10-19T20:07:46.561+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/nfsd/nfs4xdr.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5e76b25d7cc82c148d391c0c43b884e6427cb302\",\n                            \"lessThan\": \"8836405abdc53ca3dd5fc68b2cf6f8f012fad011\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"07b68ff5c71cf4ed5443016d8eb116863c0a4d88\",\n                            \"lessThan\": \"49de5d31dd8fdebf78bdeaf196b0ca5cd5c75439\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3fdc546462348b8a497c72bc894e0cde9f10fc40\",\n                            \"lessThan\": \"5ec37edcb534f3fc92304be236d37f08e6545585\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3fdc546462348b8a497c72bc894e0cde9f10fc40\",\n                            \"lessThan\": \"1e04be34cafae119e82bcaccd6d28a20f72a3647\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3fdc546462348b8a497c72bc894e0cde9f10fc40\",\n                            \"lessThan\": \"161d1aaeb04d620d3692639700512bb5038c1e10\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3fdc546462348b8a497c72bc894e0cde9f10fc40\",\n                            \"lessThan\": \"c8a24effd96d4779e2ad779654682304491c55a5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3fdc546462348b8a497c72bc894e0cde9f10fc40\",\n                            \"lessThan\": \"46eb17d45be69d28c7a23ea03283b207426a8232\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3fdc546462348b8a497c72bc894e0cde9f10fc40\",\n                            \"lessThan\": \"9e18e83b8846a5c3fe13fc8a464b4865d33996c6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5.10.220\",\n                            \"lessThan\": \"5.10.260\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.154\",\n                            \"lessThan\": \"5.15.211\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/nfsd/nfs4xdr.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.1\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.260\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.211\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.177\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.144\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.95\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.38\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.3\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/8836405abdc53ca3dd5fc68b2cf6f8f012fad011","https://git.kernel.org/stable/c/49de5d31dd8fdebf78bdeaf196b0ca5cd5c75439","https://git.kernel.org/stable/c/5ec37edcb534f3fc92304be236d37f08e6545585","https://git.kernel.org/stable/c/1e04be34cafae119e82bcaccd6d28a20f72a3647","https://git.kernel.org/stable/c/161d1aaeb04d620d3692639700512bb5038c1e10","https://git.kernel.org/stable/c/c8a24effd96d4779e2ad779654682304491c55a5","https://git.kernel.org/stable/c/46eb17d45be69d28c7a23ea03283b207426a8232","https://git.kernel.org/stable/c/9e18e83b8846a5c3fe13fc8a464b4865d33996c6"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53398","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-53398","identifiers":["CVE-2026-53398"]},"retained":false,"historicalAffected":[]}],"coverage":[]}