{"id":"CVE-2021-38202","title":"fs/nfsd/trace.h in the Linux kernel before 5.13.4 might allow remote attackers to cause a denial of service (out-of-bounds read in strlen) by sending NFS traffic when the trace event framework is being used for nfsd.","summary":"fs/nfsd/trace.h in the Linux kernel before 5.13.4 might allow remote attackers to cause a denial of service (out-of-bounds read in strlen) by sending NFS traffic when the trace event framework is being used for nfsd.","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-125"],"vendor":"netapp","product":"hci_management_node","affected":["linux_kernel < 5.13.4","hci_bootstrap_os","hci_management_node","solidfire","element_software"],"patched":["linux_kernel 5.13.4"],"published":"2021-08-08","updated":"2026-10-14","sourceUpdated":"2026-10-14T12:17:15.473","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-38202","references":[{"url":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4","label":"cve@mitre.org"},{"url":"https://github.com/torvalds/linux/commit/7b08cf62b1239a4322427d677ea9363f0ab677c6","label":"cve@mitre.org"},{"url":"https://security.netapp.com/advisory/ntap-20210902-0010/","label":"cve@mitre.org"},{"url":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/torvalds/linux/commit/7b08cf62b1239a4322427d677ea9363f0ab677c6","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20210902-0010/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd"],"epss":0.0319,"epssPercentile":0.87783,"ingestedAt":"2026-10-14T12:29:10.824Z","slug":"CVE-2021-38202","body":"## Overview\n\nfs/nfsd/trace.h in the Linux kernel before 5.13.4 might allow remote attackers to cause a denial of service (out-of-bounds read in strlen) by sending NFS traffic when the trace event framework is being used for nfsd.\n\n## Affected\n\n- `linux_kernel < 5.13.4`\n- `hci_bootstrap_os`\n- `hci_management_node`\n- `solidfire`\n- `element_software`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 5.13.4`","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.3,"likelihood":0.6,"exploitation":0,"ransomware":0},"changes":[]}