PT-2019-10069 · Linux · Linux Kernel

Fuqian Huang · Published 2019-04-04 · Updated 2019-05-02 · CVE-2018-20449

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Linux kernel version 4.14.90

Description: The issue concerns the hidma chan stats function in the Linux kernel, which allows local users to obtain sensitive address information. This is achieved by reading callback= lines in a debugfs file.

Recommendations: For Linux kernel version 4.14.90, consider restricting access to the debugfs file to minimize the risk of exploitation. As a temporary workaround, limiting the readability of the callback= lines may help mitigate the issue until a patch is available.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2018-20449

Affected Products

Linux Kernel

References · 12

• https://elixir.bootlin.com/linux/v4.14.90/source/drivers/dma/qcom/hidma_dbg.c#L92 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-20449 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-20449 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-20449 · Security Note
• https://ubuntu.com/security/CVE-2018-20449 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-20449 · Security Note
• https://osv.dev/vulnerability/CVE-2018-20449 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-20449 · Vendor Advisory
• https://lists.debian.org/debian-security-tracker/2019/01/msg00029.html · Note
• https://lore.kernel.org/lkml/CABXRUiRP8fHvGkO3T9AOFV=[e-mail] · Note
• https://mail-archive.com/debian-security-tracker%40lists.debian.org/msg03808.html · Note
• https://security.netapp.com/advisory/ntap-20190502-0002 · Note