CVE-2021-46920
Last modified
CVE-2021-46920 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback Current code blindly writes over the SWERR and the OVERFLOW bits. Write back the bits actually read instead so the driver avoids clobbering the OVERFLOW bit that comes after the register is read.. EPSS estimates a 0.22% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback Current code blindly writes over the SWERR and the OVERFLOW bits. Write back the bits actually read instead so the driver avoids clobbering the OVERFLOW bit that comes after the register is read.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.6.0, < 5.10.32 |
| Linux | Linux Kernel | >= 5.11.0, < 5.11.16 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-46920?
How severe is CVE-2021-46920?
How do I fix CVE-2021-46920?
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.
Related CVEs from 2021
- CVE-2021-46914In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2021-46915In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2021-46916In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2021-46917In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2021-46918In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2021-46919In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2021-46921In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2021-46922In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2021-46923In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2021-46924In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2021-46925In the Linux kernel, the following vulnerability has been re…4.7
- CVE-2021-46926In the Linux kernel, the following vulnerability has been re…5.5
Are you affected by CVE-2021-46920?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST