PT-2017-2423 · Linux+1 · Linux Kernel+1

Pengfei Wang · Published 2017-06-27 · Updated 2018-07-09 · CVE-2017-9986

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.11.8

Description The issue is related to the intr function in sound/oss/msnd pinnacle.c, which allows local users to cause a denial of service or possibly have other unspecified impacts. This is due to a "double fetch" vulnerability, where the value of a message queue head pointer can be changed between two kernel reads, resulting in over-boundary access. The vulnerability can be exploited by a local attacker to cause a denial of service or potentially other effects.

Recommendations For Linux kernel versions prior to 4.11.8, update to version 4.11.8 or later to resolve the issue. As a temporary workaround, consider restricting access to the sound/oss/msnd pinnacle.c module to minimize the risk of exploitation.

Fix

DoS

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

ALT-PU-2017-1854

ALT-PU-2018-1991

BDU:2017-01626

CVE-2017-9986

Affected Products

Alt Linux

Linux Kernel

References · 12

• https://ubuntu.com/security/CVE-2017-9986 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-9986 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-9986 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-9986 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2017-9986 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-9986 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-9986 · Security Note
• https://bdu.fstec.ru/vul/2017-01626 · Security Note
• https://cve.omprussia.ru/bb6323 · Note
• http://securityfocus.com/bid/99336 · Note
• https://bugzilla.kernel.org/show_bug.cgi?id=196135 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9986 · Note