CVE-2021-46940

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/13a779de4175df602366d129e41782ad7168cef0	Patch
https://git.kernel.org/stable/c/337b1546cde87fb8588ddaedf0201b769baa572a	Patch
https://git.kernel.org/stable/c/dbdf22fc825fdb1d97f23230064e0f9819471628	Patch
https://git.kernel.org/stable/c/ea6803ff2cd1a2d7d880256bf562172b708a76ff	Patch

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2024-02-27 19:04

Updated : 2024-04-10 19:44

NVD link : CVE-2021-46940

Mitre link : CVE-2021-46940

CVE.ORG link : CVE-2021-46940

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-190

Integer Overflow or Wraparound

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