CVE-2019-19448

2019-12-1011:51:36

redhat.com

access.redhat.com

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

45.6%

JSON

A flaw was found in the Linux kernel’s implementation of BTRFS free space management, where the kernel does not correctly manage the lifetime of internal data structures used. An attacker could use this flaw to corrupt memory or escalate privileges.

Mitigation

If the system requires this filesystem to work correctly, this mitigation may not be suitable.

As the BTRFS module will be auto-loaded when required, autoloading can be prevented by disabling the module, see KCS article <https://access.redhat.com/solutions/41278> or contact Red Hat Global Support Services.