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CVE-2020-12771

Date: May 9, 2020

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.

Language: C

Severity Score

5.5

Related Resources (17)

Url: http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00071.html

Url: https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html

Url: https://www.oracle.com/security-alerts/cpuApr2021.html

Url: https://usn.ubuntu.com/4465-1/

Url: https://usn.ubuntu.com/4462-1/

Url: https://usn.ubuntu.com/4463-1/

Url: https://nvd.nist.gov/vuln/detail/CVE-2020-12771

Url: http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html

Url: https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2020-12771

Url: https://security-tracker.debian.org/tracker/CVE-2020-12771

Url: https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html

Url: https://usn.ubuntu.com/4483-1/

Url: https://usn.ubuntu.com/4485-1/

Url: https://lkml.org/lkml/2020/4/26/87

Url: https://security.netapp.com/advisory/ntap-20200608-0001/

Url: https://www.mend.io/vulnerability-database/CVE-2020-12771

Severity Score

5.5

Weakness Type (CWE)

Input Validation

CWE-20

Improper Locking

CWE-667

CVSS v3.1

Base Score:	5.5
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	LOW
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

CVSS v2

Base Score:	4.9
Access Vector (AV):	LOCAL
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	COMPLETE
Additional information:

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