CVE-2020-11935

aufs: improperly managed inode reference counts in the vfsub_dentry_open() method

Description

It was discovered that aufs improperly managed inode reference counts in the vfsub_dentry_open() method. A local attacker could use this vulnerability to cause a denial of service attack.

Category

4.4
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Vendor Advisory ubuntu.com Vendor Advisory launchpad.net
Affected: Ubuntu Linux kernel (aufs filesystem module)
Published at:
Updated at:

References

Link Tags
https://ubuntu.com/security/CVE-2020-11935 vendor advisory
https://bugs.launchpad.net/bugs/1873074 vendor advisory issue tracking

Frequently Asked Questions

What is the severity of CVE-2020-11935?
CVE-2020-11935 has been scored as a medium severity vulnerability.
How to fix CVE-2020-11935?
To fix CVE-2020-11935, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-11935 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-11935 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-11935?
CVE-2020-11935 affects Ubuntu Linux kernel (aufs filesystem module).
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