CVE-2020-27784

SUSE Security Advisory - SUSE-SU-2022:3264-1

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_dev instance. However, use-after-free arises because it had been freed by gprinter_free().

Se encontró una vulnerabilidad en el kernel de Linux, donde al acceder a una instancia desasignada en printer_ioctl() printer_ioctl() intenta acceder a una instancia de printer_dev. Sin embargo, es producido un uso de memoria previamente liberada porque había sido liberada por la función gprinter_free()

An update that solves 26 vulnerabilities, contains two features and has 89 fixes is now available. The SUSE Linux Enterprise 15 SP3 Azure kernel was updated to receive various security and bug fixes.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-10-27 CVE Reserved
2022-09-01 CVE Published
2024-08-04 CVE Updated
2025-06-28 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-201: Insertion of Sensitive Information Into Sent Data
CWE-416: Use After Free

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e8d5f92b8d30bb4ade76494490c3c065e12411b1	2023-05-16

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.1 < 4.4.241 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.1 < 4.4.241"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.5 < 4.9.241 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.5 < 4.9.241"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.10 < 4.19.154 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.10 < 4.19.154"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.20 < 5.4.73 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.20 < 5.4.73"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.5 < 5.8.17 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 5.8.17"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.9.0 < 5.9.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.9.0 < 5.9.2"		-		Affected