CVE-2021-46940 - Vulnerability Details - OpenCVE

In the Linux kernel, the following vulnerability has been resolved: tools/power turbostat: Fix offset overflow issue in index converting The idx_to_offset() function returns type int (32-bit signed), but MSR_PKG_ENERGY_STAT is u32 and would be interpreted as a negative number. The end result is that it hits the if (offset < 0) check in update_msr_sum() which prevents the timer callback from updating the stat in the background when long durations are used. The similar issue exists in offset_to_idx() and update_msr_sum(). Fix this issue by converting the 'int' to 'off_t' accordingly.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Linux	Linux Kernel

Configuration 1 [-]

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

No data.

References

Link	Providers
https://git.kernel.org/stable/c/13a779de4175df602366d129e41782ad7168cef0
https://git.kernel.org/stable/c/337b1546cde87fb8588ddaedf0201b769baa572a
https://git.kernel.org/stable/c/dbdf22fc825fdb1d97f23230064e0f9819471628
https://git.kernel.org/stable/c/ea6803ff2cd1a2d7d880256bf562172b708a76ff
https://lore.kernel.org/linux-cve-announce/20240227184057.2368370-5-gregkh@linuxfoundation.org/T/#u
https://nvd.nist.gov/vuln/detail/CVE-2021-46940
https://www.cve.org/CVERecord?id=CVE-2021-46940

History

Mon, 04 Nov 2024 12:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-02-27T18:40:28.063Z

Updated: 2024-12-19T07:32:13.223Z

Reserved: 2024-02-25T13:45:52.721Z

Link: CVE-2021-46940

Vulnrichment

Updated: 2024-08-04T05:17:42.991Z

NVD

Status : Modified

Published: 2024-02-27T19:04:05.927

Modified: 2024-11-21T06:34:58.963

Link: CVE-2021-46940

Redhat

Severity :

Publid Date: 2024-02-27T00:00:00Z

Links: CVE-2021-46940 - Bugzilla

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