CVE-2022-49641

Severity CVSS v4.0:

Pending analysis

Type:

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Publication date:

26/02/2025

Last modified:

01/10/2025

Description

In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix data races in proc_douintvec(). A sysctl variable is accessed concurrently, and there is always a chance of data-race. So, all readers and writers need some basic protection to avoid load/store-tearing. This patch changes proc_douintvec() to use READ_ONCE() and WRITE_ONCE() internally to fix data-races on the sysctl side. For now, proc_douintvec() itself is tolerant to a data-race, but we still need to add annotations on the other subsystem&#39;s side.

Impact

Vector 3.x

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

Base Score: 4.70 MEDIUM
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x

4.70

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	4.4.24 (including)	4.5 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.7.7 (including)	5.10.132 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.56 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	5.18.13 (excluding)
cpe:2.3:o:linux:linux_kernel:5.19:rc1::::::
cpe:2.3:o:linux:linux_kernel:5.19:rc2::::::
cpe:2.3:o:linux:linux_kernel:5.19:rc3::::::
cpe:2.3:o:linux:linux_kernel:5.19:rc4::::::
cpe:2.3:o:linux:linux_kernel:5.19:rc5::::::
cpe:2.3:o:linux:linux_kernel:5.19:rc6::::::

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

CVE-2022-49641

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools