What’s Vulnerable › Vulnerabilities

CVE-2021-38201

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-08 · updated 2026-06-17
• Weakness: CWE-119

Description

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.

Affected products

• Linux kernel: from 5.11.0 before 5.12.19; from 5.13.0 before 5.13.4 — fixed in 5.12.19, 5.13.4
• NetApp Element Software: all versions
• NetApp Hci Bootstrap Os: all versions
• NetApp Hci Management Node: all versions
• NetApp Solidfire: all versions

How to fix

Upgrade to a fixed version: Linux kernel 5.12.19, 5.13.4. Check the vendor advisory for mitigations.

References

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4
• https://github.com/torvalds/linux/commit/6d1c0f3d28f98ea2736128ed3e46821496dc3a8c
• https://security.netapp.com/advisory/ntap-20210902-0010/
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4
• https://github.com/torvalds/linux/commit/6d1c0f3d28f98ea2736128ed3e46821496dc3a8c
• https://security.netapp.com/advisory/ntap-20210902-0010/

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