CVE-2021-47006
ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook
Description
In the Linux kernel, the following vulnerability has been resolved: ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook The commit 1879445dfa7b ("perf/core: Set event'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/[email protected]/
INFO
Published Date :
Feb. 28, 2024, 9:15 a.m.
Last Modified :
March 19, 2025, 10:49 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update the affected kernel packages.
- Reboot the system after updating.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-47006.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47006 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-47006
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-47006 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47006 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Mar. 19, 2025
Action Type Old Value New Value Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.233 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.191 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.120 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.38 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.11.22 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.12 up to (excluding) 5.12.5 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.7 up to (excluding) 4.9.269 Added Reference Type CVE: https://git.kernel.org/stable/c/3ed8832aeaa9a37b0fc386bb72ff604352567c80 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/3ed8832aeaa9a37b0fc386bb72ff604352567c80 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/555a70f7fff03bd669123487905c47ae27dbdaac Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/555a70f7fff03bd669123487905c47ae27dbdaac Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/630146203108bf6b8934eec0dfdb3e46dcb917de Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/630146203108bf6b8934eec0dfdb3e46dcb917de Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/7eeacc6728c5478e3c01bc82a1f08958eaa12366 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/7eeacc6728c5478e3c01bc82a1f08958eaa12366 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/a506bd5756290821a4314f502b4bafc2afcf5260 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a506bd5756290821a4314f502b4bafc2afcf5260 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/a9938d6d78a238d6ab8de57a4d3dcf77adceb9bb Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a9938d6d78a238d6ab8de57a4d3dcf77adceb9bb Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/dabe299425b1a53a69461fed7ac8922ea6733a25 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/dabe299425b1a53a69461fed7ac8922ea6733a25 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/ed1f67465327cec4457bb988775245b199da86e6 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/ed1f67465327cec4457bb988775245b199da86e6 Types: Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/3ed8832aeaa9a37b0fc386bb72ff604352567c80 Added Reference https://git.kernel.org/stable/c/555a70f7fff03bd669123487905c47ae27dbdaac Added Reference https://git.kernel.org/stable/c/630146203108bf6b8934eec0dfdb3e46dcb917de Added Reference https://git.kernel.org/stable/c/7eeacc6728c5478e3c01bc82a1f08958eaa12366 Added Reference https://git.kernel.org/stable/c/a506bd5756290821a4314f502b4bafc2afcf5260 Added Reference https://git.kernel.org/stable/c/a9938d6d78a238d6ab8de57a4d3dcf77adceb9bb Added Reference https://git.kernel.org/stable/c/dabe299425b1a53a69461fed7ac8922ea6733a25 Added Reference https://git.kernel.org/stable/c/ed1f67465327cec4457bb988775245b199da86e6 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 07, 2024
Action Type Old Value New Value Added CVSS V3.1 CISA-ADP AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 28, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook The commit 1879445dfa7b ("perf/core: Set event'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/[email protected]/ Added Reference Linux https://git.kernel.org/stable/c/555a70f7fff03bd669123487905c47ae27dbdaac [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/ed1f67465327cec4457bb988775245b199da86e6 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/a9938d6d78a238d6ab8de57a4d3dcf77adceb9bb [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/3ed8832aeaa9a37b0fc386bb72ff604352567c80 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/630146203108bf6b8934eec0dfdb3e46dcb917de [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/7eeacc6728c5478e3c01bc82a1f08958eaa12366 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/dabe299425b1a53a69461fed7ac8922ea6733a25 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/a506bd5756290821a4314f502b4bafc2afcf5260 [No types assigned]