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CVE-2022-1976

HIGHCVSS 7.8/10EPSS 0.23%

Last modified

CVE-2022-1976 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A flaw was found in the Linux kernel’s implementation of IO-URING. This flaw allows an attacker with local executable permission to create a string of requests that can cause a use-after-free flaw within the kernel. EPSS estimates a 0.23% chance of exploitation in the next 30 days.

Description

A flaw was found in the Linux kernel’s implementation of IO-URING. This flaw allows an attacker with local executable permission to create a string of requests that can cause a use-after-free flaw within the kernel. This issue leads to memory corruption and possible privilege escalation.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.23%

13.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel>= 5.17.3, < 5.18.6

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2022-1976?
A flaw was found in the Linux kernel’s implementation of IO-URING. This flaw allows an attacker with local executable permission to create a string of requests that can cause a use-after-free flaw within the kernel. This issue leads to memory corruption and possible privilege escalation.
How severe is CVE-2022-1976?
CVE-2022-1976 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.
How do I fix CVE-2022-1976?
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.

Are you affected by CVE-2022-1976?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST