Strix
26.1K

CVE-2020-27786

HIGHCVSS 7.8/10EPSS 1.66%

Last modified

CVE-2020-27786 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A flaw was found in the Linux kernel’s implementation of MIDI, where an attacker with a local account and the permissions to issue ioctl commands to midi devices could trigger a use-after-free issue. A write to this specific memory while freed and before use causes the flow of execution to change and possibly allow for memory corruption or privilege escalation. EPSS estimates a 1.66% chance of exploitation in the next 30 days.

Description

A flaw was found in the Linux kernel’s implementation of MIDI, where an attacker with a local account and the permissions to issue ioctl commands to midi devices could trigger a use-after-free issue. A write to this specific memory while freed and before use causes the flow of execution to change and possibly allow for memory corruption or privilege escalation. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

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
1.66%

73.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel< 4.4.224
LinuxLinux Kernel>= 4.5, < 4.9.224
LinuxLinux Kernel>= 4.10, < 4.14.181
LinuxLinux Kernel>= 4.15, < 4.19.124
LinuxLinux Kernel>= 4.20, < 5.4.42
LinuxLinux Kernel>= 5.5, < 5.6.14
RedhatOpenshift Container Platform4.4
RedhatOpenshift Container Platform4.5
RedhatOpenshift Container Platform4.6
RedhatEnterprise Linux7.0
RedhatEnterprise Linux8.0
RedhatEnterprise Mrg2.0
NetappCloud BackupAll versions
NetappSolidfire Baseboard Management ControllerAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-27786?
A flaw was found in the Linux kernel’s implementation of MIDI, where an attacker with a local account and the permissions to issue ioctl commands to midi devices could trigger a use-after-free issue. A write to this specific memory while freed and before use causes the flow of execution to change and possibly allow for memory corruption or privilege escalation. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
How severe is CVE-2020-27786?
CVE-2020-27786 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.66% probability of exploitation in the next 30 days.
How do I fix CVE-2020-27786?
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-2020-27786?

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

Scan your code now

Source: NVD / NIST