High 7.5Published Aug 8, 2021

CVE-2021-38202fs/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 bei…

Updated under an hour ago (Oct 27, 2026, 12:30 PM ET)

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It affects Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem and 5 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: mitre
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1.1	CISA ADP
linux linux_kernel linux:linux_kernel	before 5.13.4	NVD
netapp hci_bootstrap_os netapp:hci_bootstrap_os	all versions	NVD
netapp hci_management_node netapp:hci_management_node	all versions	NVD
netapp solidfire netapp:solidfire	all versions	NVD
netapp element_software netapp:element_software	all versions	NVD

References

References

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4	x-refsource-misc, mailing-list, patch, vendor-advisory
https://github.com/torvalds/linux/commit/7b08cf62b1239a4322427d677ea9363f0ab677c6	x-refsource-misc, patch, third-party-advisory
https://security.netapp.com/advisory/ntap-20210902-0010/	x-refsource-confirm, third-party-advisory
https://cert-portal.siemens.com/productcert/html/ssa-265688.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.