CVE-2021-37576
HIGHCVSS 7.8/10EPSS 0.57%
Last modified
CVE-2021-37576 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e.. EPSS estimates a 0.57% chance of exploitation in the next 30 days.
Description
arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.10, < 4.4.277 |
| Linux | Linux Kernel | >= 4.5, < 4.9.277 |
| Linux | Linux Kernel | >= 4.10, < 4.14.241 |
| Linux | Linux Kernel | >= 4.15, < 4.19.199 |
| Linux | Linux Kernel | >= 4.20, < 5.4.136 |
| Linux | Linux Kernel | >= 5.5, < 5.10.54 |
| Linux | Linux Kernel | >= 5.11, < 5.13.6 |
| Fedoraproject | Fedora | 33 |
| Fedoraproject | Fedora | 34 |
References
- http://www.openwall.com/lists/oss-security/2021/07/27/2Exploit, Mailing List, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210917-0005/Third Party Advisory
- https://www.debian.org/security/2021/dsa-4978Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/07/27/2Exploit, Mailing List, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210917-0005/Third Party Advisory
- https://www.debian.org/security/2021/dsa-4978Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-37576?
arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e.
How severe is CVE-2021-37576?
CVE-2021-37576 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.
How do I fix CVE-2021-37576?
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-2021-37576?
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