PT-2016-2920 · Linux+1 · Linux Kernel+1

Published 2016-03-11 · Updated 2023-01-19 · CVE-2016-9120

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.6

Description The issue is related to a race condition in the ion ioctl function, which can be exploited by calling ION IOC FREE on two CPUs simultaneously, potentially allowing local users to gain privileges or cause a denial of service due to a use-after-free condition.

Recommendations For Linux kernel versions prior to 4.6, update to version 4.6 or later to resolve the issue. As a temporary workaround, consider restricting access to the ion ioctl function to minimize the risk of exploitation.

Fix

DoS

Race Condition

Use After Free

Weakness Enumeration

CWE-362

CWE-264

CWE-416

Related Identifiers

ALT-PU-2016-1634

ALT-PU-2017-1330

BDU:2016-02351

CVE-2016-9120

MGASA-2017-0136

MGASA-2017-0147

MGASA-2017-0148

Affected Products

Alt Linux

Linux Kernel

References · 33

• https://github.com/torvalds/linux/commit/9590232bb4f4cc824f3425a6e1349afbe6d6d2b7 · Patch
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9590232bb4f4cc824f3425a6e1349afbe6d6d2b7 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2017-0147 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2016-9120 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2016-9120 · Security Note
• https://ubuntu.com/security/CVE-2016-9120 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2017-0148.html · Security Note
• https://osv.dev/vulnerability/MGASA-2017-0136 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2017-0136.html · Security Note
• https://osv.dev/vulnerability/MGASA-2017-0148 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-9120 · Security Note
• https://bdu.fstec.ru/vul/2016-02351 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2016-9120 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2017-0147.html · Security Note
• https://osv.dev/vulnerability/CVE-2016-9120 · Vendor Advisory