CVE-2021-47006

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

28/02/2024

Last modified:

19/03/2025

Description

In the Linux kernel, the following vulnerability has been resolved: ARM: 9064/1: hw_breakpoint: Do not directly check the event&#39;s overflow_handler hook The commit 1879445dfa7b ("perf/core: Set event&#39;s default ::overflow_handler()") set a default event->overflow_handler in perf_event_alloc(), and replace the check event->overflow_handler with is_default_overflow_handler(), but one is missing. Currently, the bp->overflow_handler can not be NULL. As a result, enable_single_step() is always not invoked. Comments from Zhen Lei: https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210207105934.2001-1-thunder.leizhen@huawei.com/

Impact

Vector 3.x

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

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	4.7 (including)	4.9.269 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.10 (including)	4.14.233 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.15 (including)	4.19.191 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.4.120 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.38 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.11.22 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.12 (including)	5.12.5 (excluding)

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

CVE-2021-47006

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools