Information exposure in Linux kernel - CVE-2018-20449

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Main Vulnerability Database Vulnerabilities #VU92786

Information exposure in Linux kernel - CVE-2018-20449

Published: April 4, 2019 / Updated: May 2, 2019


Vulnerability identifier: #VU92786
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-20449
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel

Detailed vulnerability description

The vulnerability allows a local user to gain access to sensitive information.

The hidma_chan_stats function in drivers/dma/qcom/hidma_dbg.c in the Linux kernel 4.14.90 allows local users to obtain sensitive address information by reading 'callback=' lines in a debugfs file.


How to mitigate CVE-2018-20449

Install update from vendor's repository.

Sources