Strix
26.1K

CVE-2020-27784

MEDIUMCVSS 5.5/10EPSS 0.22%

Last modified

CVE-2020-27784 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_dev instance. However, use-after-free arises because it had been freed by gprinter_free().. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_dev instance. However, use-after-free arises because it had been freed by gprinter_free().

Metrics

CVSS 3.1
5.5/10

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

EPSS Probability
0.22%

12.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel>= 4.1, < 4.4.241
LinuxLinux Kernel>= 4.5, < 4.9.241
LinuxLinux Kernel>= 4.10, < 4.19.154
LinuxLinux Kernel>= 4.20, < 5.4.73
LinuxLinux Kernel>= 5.5, < 5.8.17
LinuxLinux Kernel>= 5.9.0, < 5.9.2

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-27784?
A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_dev instance. However, use-after-free arises because it had been freed by gprinter_free().
How severe is CVE-2020-27784?
CVE-2020-27784 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.
How do I fix CVE-2020-27784?
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-2020-27784?

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

Scan your code now

Source: NVD / NIST