{"cve":"CVE-2026-53398","nvd":{"published":"2026-07-19T12:16:50.933","modified":"2026-10-19T20:19:18.507","status":"Modified","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().","cvss_v4":null,"cvss_v3":{"version":"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},"cwes":["CWE-665"],"references":["https://git.kernel.org/stable/c/161d1aaeb04d620d3692639700512bb5038c1e10","https://git.kernel.org/stable/c/1e04be34cafae119e82bcaccd6d28a20f72a3647","https://git.kernel.org/stable/c/46eb17d45be69d28c7a23ea03283b207426a8232","https://git.kernel.org/stable/c/49de5d31dd8fdebf78bdeaf196b0ca5cd5c75439","https://git.kernel.org/stable/c/5ec37edcb534f3fc92304be236d37f08e6545585"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2026-53398","score":0.00543,"percentile":0.45315,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}