PT-2021-8034 · Linux+2 · Linux Kernel+2

Paul Clements · Published 2021-04-23 · Updated 2024-08-22 · CVE-2021-46950

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to a data corruption bug in raid1 arrays using bitmaps. Without the fix, the bitmap bits for the failed I/O end up being cleared. The request either needs to be retried (R1BIO WriteError) or failed (R1BIO Degraded) in the failure leg of the raid1 end write request function. This bug can potentially impact the confidentiality, integrity, and availability of protected information.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-19

Related Identifiers

BDU:2024-03690

CVE-2021-46950

OPENSUSE-SU-2024_1489-1

SUSE-SU-2024:1454-1

SUSE-SU-2024:1465-1

SUSE-SU-2024:1489-1

SUSE-SU-2024:1643-1

SUSE-SU-2024:1646-1

SUSE-SU-2024:1870-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 620

• https://osv.dev/vulnerability/SUSE-SU-2024:1489-1 · Vendor Advisory
• https://git.kernel.org/stable/c/12216d0919b64ee2ea5dc7a50e455670f44383d5 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:1646-1 · Vendor Advisory
• https://git.kernel.org/stable/c/2417b9869b81882ab90fd5ed1081a1cb2d4db1dd · Patch
• https://bdu.fstec.ru/vul/2024-03690 · Security Note
• https://git.kernel.org/stable/c/59452e551784b7a57a45d971727e9db63b192515 · Patch
• https://cve.org/CVERecord?id=CVE-2021-46950 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:1870-1 · Vendor Advisory
• https://git.kernel.org/stable/c/661061a45e32d8b2cc0e306da9f169ad44011382 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-46950 · Security Note
• https://git.kernel.org/stable/c/6920cef604fa57f9409e3960413e9cc11f5c5a40 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:1643-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-46950 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-46950 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-46950 · Vendor Advisory