CVE-2021-46950

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

27/02/2024

Last modified:

22/04/2025

Description

In the Linux kernel, the following vulnerability has been resolved: md/raid1: properly indicate failure when ending a failed write request This patch addresses a data corruption bug in raid1 arrays using bitmaps. Without this fix, the bitmap bits for the failed I/O end up being cleared. Since we are in the failure leg of raid1_end_write_request, the request either needs to be retried (R1BIO_WriteError) or failed (R1BIO_Degraded).

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::::::::	4.14.147 (including)	4.14.233 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.19.77 (including)	4.19.191 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.2.19 (including)	5.3 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.3.4 (including)	5.4.118 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.36 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.11.20 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.12 (including)	5.12.3 (excluding)

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

CVE-2021-46950

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools