CVE-2022-50300

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

15/09/2025

Last modified:

04/12/2025

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map use-after-free when handling missing device in read_one_chunk Store the error code before freeing the extent_map. Though it&#39;s reference counted structure, in that function it&#39;s the first and last allocation so this would lead to a potential use-after-free. The error can happen eg. when chunk is stored on a missing device and the degraded mount option is missing. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=216721

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

7.80

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	4.15 (including)	5.15.87 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.0.18 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.1 (including)	6.1.4 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2022-50300

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools