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CVE-2019-19036

Good to know:

Date: November 20, 2019

btrfs_root_node in fs/btrfs/ctree.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference because rcu_dereference(root->node) can be zero.

Language: C

Severity Score

5.5

Related Resources (10)

Url: https://security-tracker.debian.org/tracker/CVE-2019-19036

Url: https://security.netapp.com/advisory/ntap-20191205-0001/

Url: https://usn.ubuntu.com/4439-1/

Url: https://access.redhat.com/security/cve/CVE-2019-19036

Url: https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19036

Url: https://usn.ubuntu.com/4414-1/

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2019-19036

Url: https://nvd.nist.gov/vuln/detail/CVE-2019-19036

Url: http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html

Url: https://www.mend.io/vulnerability-database/CVE-2019-19036

Severity Score

5.5

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

Top Fix

Upgrade Version

Upgrade to version v5.4-rc1,v4.19.129,v5.2.19,v5.3.4

CVSS v3.1

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

CVSS v2

Base Score:	4.3
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL
Additional information:

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