PT-2017-1181 · Linux+2 · Linux Kernel+2

Adam Mariš · Published 2017-01-10 · Updated 2018-08-24 · CVE-2017-5549

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 versions prior to 4.9.5

Description The issue is related to the klsi 105 get line state function in the Linux kernel, which can lead to the exposure of sensitive information. This occurs when the function places uninitialized heap-memory contents into a log entry upon a failure to read the line status, allowing local users to obtain this information by reading the log. The vulnerability is associated with insufficient protection of registration data.

Recommendations For Linux kernel versions prior to 4.9.5, update to version 4.9.5 or later to resolve the issue. As a temporary workaround, consider restricting access to log entries to minimize the risk of exploitation.

Fix

Insertion into Log File

Weakness Enumeration

CWE-532

Related Identifiers

ALT-PU-2017-1063

ALT-PU-2017-1330

BDU:2017-00292

CVE-2017-5549

DLA-833-1

DSA-3791-1

MGASA-2017-0063

MGASA-2017-0064

MGASA-2017-0065

USN-3208-1

USN-3208-2

USN-3361-1

USN-3754-1

Affected Products

Alt Linux

Linux Kernel

Ubuntu

References · 143

• https://github.com/torvalds/linux/commit/146cc8a17a3b4996f6805ee5c080e7101277c410 · Patch
• https://ubuntu.com/security/CVE-2018-13094 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-5551 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-16538 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-16536 · Vendor Advisory
• http://debian.org/security/2017/dsa-3791 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3754-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-10877 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-8636 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-16537 · Vendor Advisory
• http://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.5 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2017-0064 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-16535 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-16912 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-5549 · Vendor Advisory