CVE-2019-6492

MEDIUM

IObit Smart Defrag - Use-After-Free via SmartDefragDriver.sys IOCTL 0x9C401CC4

Title source: llm

Description

SmartDefragDriver.sys (2.0) in IObit Smart Defrag 6 never frees an executable kernel pool that is allocated with user defined bytes and size when IOCTL 0x9C401CC4 is called. This kernel pointer can be leaked if the kernel pool becomes a "big" pool.

References (1)

Core 1

Core References

Exploit, Third Party Advisory x_refsource_misc

https://downwithup.github.io/CVEPosts.html

Scores

CVSS v3 5.5

EPSS 0.0046

EPSS Percentile 36.5%

Attack Vector LOCAL

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Details

CWE

CWE-401

Status published

Products (1)

iobit/smart_defrag 6.0

Published Mar 21, 2019

Tracked Since Feb 18, 2026