Strix
26.1K

CVE-2018-20784

CRITICALCVSS 9.8/10EPSS 4.17%

Last modified

CVE-2018-20784 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfs_rq's, which allows attackers to cause a denial of service (infinite loop in update_blocked_averages) or possibly have unspecified other impact by inducing a high load.. EPSS estimates a 4.17% chance of exploitation in the next 30 days.

Description

In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfs_rq's, which allows attackers to cause a denial of service (infinite loop in update_blocked_averages) or possibly have unspecified other impact by inducing a high load.

Metrics

CVSS 3.1
9.8/10

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

EPSS Probability
4.17%

89.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
LinuxLinux Kernel>= 4.13, < 4.14.93—
LinuxLinux Kernel>= 4.19, < 4.19.15—
LinuxLinux Kernel>= 4.20, < 4.20.2—
LinuxLinux Kernel5.0Rc1
CanonicalUbuntu Linux14.04—
CanonicalUbuntu Linux16.04—
CanonicalUbuntu Linux18.04—
RedhatEnterprise Linux8.0—
RedhatEnterprise Linux For Real Time8—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-20784?
In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfs_rq's, which allows attackers to cause a denial of service (infinite loop in update_blocked_averages) or possibly have unspecified other impact by inducing a high load.
How severe is CVE-2018-20784?
CVE-2018-20784 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 4.17% probability of exploitation in the next 30 days.
How do I fix CVE-2018-20784?
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

Related CVEs from 2018

View all 2018CVEs →

Are you affected by CVE-2018-20784?

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

Scan your code now

Source: NVD / NIST