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Vulnerability record · CVE-2018-20449 · published 4 April 2019

CVE-2018-20449: Linux kernel information exposure vulnerability

Linux · Linux Kernel

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.

5.5 CVSS 3.0 Medium EPSS 0.42% · top 66.1% CWE-200 · Information exposure
5.5CVSS 3.0 base score, v2 2.1
0.42%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://elixir.bootlin.com/linux/v4.14.90/source/drivers/dma/qcom/hidma_dbg.c#L92 PatchThird Party Advisory
https://security.netapp.com/advisory/ntap-20190502-0002/ Third Party Advisory
https://www.mail-archive.com/debian-security-tracker%40lists.debian.org/msg03808.html
https://elixir.bootlin.com/linux/v4.14.90/source/drivers/dma/qcom/hidma_dbg.c#L92 PatchThird Party Advisory
https://security.netapp.com/advisory/ntap-20190502-0002/ Third Party Advisory
https://www.mail-archive.com/debian-security-tracker%40lists.debian.org/msg03808.html

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Source: NIST National Vulnerability Database (record CVE-2018-20449), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.