5.5
MEDIUM
CVE-2020-12771
Linux kernel Deadlock in bcache Btree Coalescing
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.

INFO

Published Date :

May 9, 2020, 9:15 p.m.

Last Modified :

April 26, 2022, 5:06 p.m.

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2020-12771 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Netapp active_iq_unified_manager
2 Netapp h410c_firmware
3 Netapp a700s_firmware
4 Netapp cloud_backup
5 Netapp hci_management_node
6 Netapp solidfire
7 Netapp element_software
8 Netapp steelstore_cloud_integrated_storage
9 Netapp h300s_firmware
10 Netapp h500s_firmware
11 Netapp h700s_firmware
12 Netapp h410s_firmware
13 Netapp hci_bootstrap_os
14 Netapp h615c_firmware
15 Netapp h610s_firmware
16 Netapp h610c_firmware
17 Netapp h300e_firmware
18 Netapp h500e_firmware
19 Netapp h700e_firmware
1 Linux linux_kernel
1 Canonical ubuntu_linux
1 Debian debian_linux
1 Opensuse leap
1 Oracle sd-wan_edge
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-12771.

URL Resource
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00071.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html Mailing List Third Party Advisory
https://lkml.org/lkml/2020/4/26/87 Exploit Mailing List Patch Third Party Advisory
https://security.netapp.com/advisory/ntap-20200608-0001/ Third Party Advisory
https://usn.ubuntu.com/4462-1/ Third Party Advisory
https://usn.ubuntu.com/4463-1/ Third Party Advisory
https://usn.ubuntu.com/4465-1/ Third Party Advisory
https://usn.ubuntu.com/4483-1/ Third Party Advisory
https://usn.ubuntu.com/4485-1/ Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html Patch Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-12771 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-12771 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Apr. 26, 2022

    Action Type Old Value New Value
    Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00071.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00071.html Mailing List, Third Party Advisory
    Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html Mailing List, Third Party Advisory
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html Mailing List, Third Party Advisory
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html Mailing List, Third Party Advisory
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html Mailing List, Third Party Advisory
    Changed Reference Type https://security.netapp.com/advisory/ntap-20200608-0001/ No Types Assigned https://security.netapp.com/advisory/ntap-20200608-0001/ Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/4462-1/ No Types Assigned https://usn.ubuntu.com/4462-1/ Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/4463-1/ No Types Assigned https://usn.ubuntu.com/4463-1/ Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/4465-1/ No Types Assigned https://usn.ubuntu.com/4465-1/ Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/4483-1/ No Types Assigned https://usn.ubuntu.com/4483-1/ Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/4485-1/ No Types Assigned https://usn.ubuntu.com/4485-1/ Third Party Advisory
    Changed Reference Type https://www.oracle.com/security-alerts/cpuApr2021.html No Types Assigned https://www.oracle.com/security-alerts/cpuApr2021.html Patch, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* *cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
    Added CPE Configuration OR *cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* *cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:hci_bootstrap_os:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:a700s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:a700s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h610c_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h610c:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h610s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h610s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h615c_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h615c:-:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:a:oracle:sd-wan_edge:8.2:*:*:*:*:*:*:*
  • CWE Remap by [email protected]

    Jul. 21, 2021

    Action Type Old Value New Value
    Changed CWE CWE-20 CWE-667
  • CVE Modified by [email protected]

    Jun. 14, 2021

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpuApr2021.html [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 02, 2020

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html [No Types Assigned]
    Added Reference https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html [No Types Assigned]
  • CVE Modified by [email protected]

    Sep. 15, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4485-1/ [No Types Assigned]
  • CVE Modified by [email protected]

    Sep. 15, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4483-1/ [No Types Assigned]
    Added Reference https://usn.ubuntu.com/4462-1/ [No Types Assigned]
  • CVE Modified by [email protected]

    Aug. 27, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4465-1/ [No Types Assigned]
  • CVE Modified by [email protected]

    Aug. 24, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4463-1/ [No Types Assigned]
  • CVE Modified by [email protected]

    Aug. 12, 2020

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html [No Types Assigned]
  • CVE Modified by [email protected]

    Aug. 06, 2020

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 26, 2020

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00071.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 08, 2020

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20200608-0001/ [No Types Assigned]
  • Initial Analysis by [email protected]

    May. 13, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:N/A:C)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://lkml.org/lkml/2020/4/26/87 No Types Assigned https://lkml.org/lkml/2020/4/26/87 Exploit, Mailing List, Patch, Third Party Advisory
    Added CWE NIST CWE-20
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (including) 5.6.11
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-12771 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-12771 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.11 }} 0.03%

score

0.43848

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability