CVE-2020-12771

Public Exploit

Description

An issue was discovered in the Linux kernel through 5.6.11. btree_gc_coalesce in drivers/md/bcache/btree.c has a deadlock if a coalescing operation fails.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.06%
Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00071.html mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html mailing list third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html third party advisory mailing list
https://usn.ubuntu.com/4463-1/ third party advisory vendor advisory
https://usn.ubuntu.com/4465-1/ third party advisory vendor advisory
https://usn.ubuntu.com/4462-1/ third party advisory vendor advisory
https://usn.ubuntu.com/4483-1/ third party advisory vendor advisory
https://usn.ubuntu.com/4485-1/ third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html third party advisory mailing list
https://www.oracle.com/security-alerts/cpuApr2021.html third party advisory patch
https://security.netapp.com/advisory/ntap-20200608-0001/ third party advisory
https://lkml.org/lkml/2020/4/26/87 mailing list patch exploit third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-12771?
CVE-2020-12771 has been scored as a medium severity vulnerability.
How to fix CVE-2020-12771?
To fix CVE-2020-12771, 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-2020-12771 being actively exploited in the wild?
It is possible that CVE-2020-12771 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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