VDB-154610 · CVE-2020-12465 · GCVE-0-2020-12465

Linux Kernel up to 5.5.9 dma.c mt76_add_fragment Packet out-of-bounds write

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.
6.4	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 5.5.9. Impacted is the function mt76_add_fragment of the file drivers/net/wireless/mediatek/mt76/dma.c. Such manipulation as part of Packet leads to out-of-bounds write. This vulnerability is referenced as CVE-2020-12465. The attack can only be performed from a local environment. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.5.9 (Operating System). It has been rated as critical. Affected by this issue is the function mt76_add_fragment of the file drivers/net/wireless/mediatek/mt76/dma.c. The manipulation as part of a Packet leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An array overflow was discovered in mt76_add_fragment in drivers/net/wireless/mediatek/mt76/dma.c in the Linux kernel before 5.5.10, aka CID-b102f0c522cf. An oversized packet with too many rx fragments can corrupt memory of adjacent pages.

The weakness was published 04/29/2020. This vulnerability is handled as CVE-2020-12465 since 04/29/2020. Local access is required to approach this attack. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

Upgrading to version 5.5.10 eliminates this vulnerability.

Similar entry is available at VDB-154609. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.5.10
Patch: git.kernel.org

Timelineinfo

04/29/2020 🔍
04/29/2020 +0 days 🔍
04/30/2020 +1 days 🔍
06/04/2024 +1496 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: b102f0c522cf668c8382c56a4f771b37d011cda2
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-12465 (🔍)
GCVE (CVE): GCVE-0-2020-12465
GCVE (VulDB): GCVE-100-154610
See also: 🔍

Entryinfo

Created: 04/30/2020 09:43
Updated: 06/04/2024 14:51
Changes: 04/30/2020 09:43 (41), 04/30/2020 09:48 (18), 10/14/2020 14:14 (1), 06/04/2024 14:51 (20)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.