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TI-2021-15878 Aliases CVE-2021-38201GHSA-5w93-hr8w-rppx

net/sunrpc/xdr.c in the Linux kernel before 5.13.4 allows remote attackers to cause a…

Priority LOW 39CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.

Summary

net/sunrpc/xdr.c in the Linux kernel before 5.13.4 allows remote attackers to cause a denial of service (xdr_set_page_base slab-out-of-bounds access) by performing many NFS 4.2 READ_PLUS operations.

Why it matters now

EPSS 0.03365 88th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.11.0 to before 5.12.19; 5.13.0 to before 5.13.4VulnerableLinux
cpe:2.3:o:netapp:hci_bootstrap_os:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:hci_storage_node:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.11.0 to before 5.12.19; 5.13.0 to before 5.13.4 Vulnerable ·Linux
  • cpe:2.3:o:netapp:hci_bootstrap_os:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:hci_storage_node:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp

Remediation

Red Hat 2 advisories

  • RHSA-2021:3447 Released 2021-09-07 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-305.17.1.el8_4
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-305.17.1.el8_4, kernel-4.18.0-305.17.1.el8_4, kernel-abi-stablelists-4.18.0-305.17.1.el8_4 +19
  • RHSA-2021:3440 Released 2021-09-07 · Red Hat rating Moderate
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt-4.18.0-305.17.1.rt7.89.el8_4, kernel-rt-core-4.18.0-305.17.1.rt7.89.el8_4, kernel-rt-debug-4.18.0-305.17.1.rt7.89.el8_4 +7
    • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-305.17.1.rt7.89.el8_4, kernel-rt-core-4.18.0-305.17.1.rt7.89.el8_4, kernel-rt-debug-4.18.0-305.17.1.rt7.89.el8_4 +9

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2021:3447
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2021:3447
Red Hat Enterprise Linux Real Time (v. 8)Fixed RHSA-2021:3440
Red Hat Enterprise Linux Real Time for NFV (v. 8)Fixed RHSA-2021:3440
Not affected: 3 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-38201
  2. 2026-10-03 Alias added: GHSA-5w93-hr8w-rppx

References

Patch 2

Advisory 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences