Linux Kernel up to 5.3.5 USB Device atusb.c use after free

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.3$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 5.3.5. This impacts an unknown function of the file drivers/net/ieee802154/atusb.c of the component USB Device Handler. This manipulation causes use after free. This vulnerability is tracked as CVE-2019-19525. It is feasible to perform the attack on the physical device. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.3.5 (Operating System). It has been declared as critical. Affected by this vulnerability is some unknown functionality of the file drivers/net/ieee802154/atusb.c of the component USB Device Handler. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel before 5.3.6, there is a use-after-free bug that can be caused by a malicious USB device in the drivers/net/ieee802154/atusb.c driver, aka CID-7fd25e6fc035.

The weakness was disclosed 12/03/2019 (oss-sec). The advisory is shared at openwall.com. This vulnerability is known as CVE-2019-19525 since 12/03/2019. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 250024 (Linux Distros Unpatched Vulnerability : CVE-2019-19525), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.3.6 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (250024). The entries VDB-146615, VDB-146616, VDB-146618 and VDB-146619 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.6
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 250024
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2019-19525

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.3.6
Patch: git.kernel.org

Timelineinfo

12/03/2019 🔍
12/03/2019 +0 days 🔍
12/04/2019 +1 days 🔍
08/17/2025 +2083 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: DLA 2114-1
Status: Confirmed

CVE: CVE-2019-19525 (🔍)
GCVE (CVE): GCVE-0-2019-19525
GCVE (VulDB): GCVE-100-146617
See also: 🔍

Entryinfo

Created: 12/04/2019 09:55
Updated: 08/17/2025 19:24
Changes: 12/04/2019 09:55 (42), 12/04/2019 10:00 (18), 03/07/2024 06:24 (5), 08/17/2025 19:24 (18)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!