linux linux-kernel CVE-2020-10690 vulnerability in Linux and Other Products
Published on May 8, 2020

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There is a use-after-free in kernel versions before 5.5 due to a race condition between the release of ptp_clock and cdev while resource deallocation. When a (high privileged) process allocates a ptp device file (like /dev/ptpX) and voluntarily goes to sleep. During this time if the underlying device is removed, it can cause an exploitable condition as the process wakes up to terminate and clean all attached files. The system crashes due to the cdev structure being invalid (as already freed) which is pointed to by the inode.

Vendor Advisory Vendor Advisory NVD

Vulnerability Analysis

CVE-2020-10690 is exploitable with local system access, requires user interaction and user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
LOCAL
Attack Complexity:
LOW
Privileges Required:
HIGH
User Interaction:
REQUIRED
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

What is a Dangling pointer Vulnerability?

Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.

CVE-2020-10690 has been classified to as a Dangling pointer vulnerability or weakness.


Products Associated with CVE-2020-10690

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2020-10690 are published in these products:

Linux Kernel
 
Red Hat Enterprise Linux (RHEL)
 
Debian Linux
 
Canonical Ubuntu Linux
 
OpenSuse Leap
 
NetApp Active Iq Unified Manager
 
NetApp Element Software
 
NetApp Hci Management Node
 
NetApp Solidfire
 
NetApp Steelstore Cloud Integrated Storage
 
NetApp Hci Compute Node
 

Affected Versions

Red Hat kernel Version all kernel versions before 5.5 is affected by CVE-2020-10690

Exploit Probability

EPSS
0.13%
Percentile
32.03%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.