CVE-2021-38201
HIGHCVSS 7.5/10EPSS 3.36%
Last modified
CVE-2021-38201 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 3.36% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.11.0, < 5.12.19 |
| Linux | Linux Kernel | >= 5.13.0, < 5.13.4 |
| Netapp | Hci Bootstrap Os | All versions |
| Netapp | Hci Management Node | All versions |
| Netapp | Solidfire | All versions |
| Netapp | Element Software | All versions |
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4Mailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/6d1c0f3d28f98ea2736128ed3e46821496dc3a8cPatch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210902-0010/Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4Mailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/6d1c0f3d28f98ea2736128ed3e46821496dc3a8cPatch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210902-0010/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-38201?
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.
How severe is CVE-2021-38201?
CVE-2021-38201 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.36% probability of exploitation in the next 30 days.
How do I fix CVE-2021-38201?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-38201?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST