CVE-2022-49582

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49582
In the Linux kernel, the following vulnerability has been resolved: net: dsa: fix NULL pointer dereference in dsa_port_reset_vlan_filtering The "ds" iterator variable used in dsa_port_reset_vlan_filtering() -> dsa_switch_for_each_port() overwrites the "dp" received as argument, which is later used to call dsa_port_vlan_filtering() proper. As a result, switches which do enter that code path (the ones with vlan_filtering_is_global=true) will dereference an invalid dp in dsa_port_reset_vlan_filtering() after leaving a VLAN-aware bridge. Use a dedicated "other_dp" iterator variable to avoid this from happening.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/1699b4d502eda3c7ea4070debad3ee570b5091b1 Patch
https://git.kernel.org/stable/c/3240e12fe203a3a79b9814e83327106b770ed7b0 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc7:*:*:*:*:*:*
History

10 Mar 2025, 20:23

Type Values Removed Values Added
First Time Linux linux Kernel
Linux
References () https://git.kernel.org/stable/c/1699b4d502eda3c7ea4070debad3ee570b5091b1 - () https://git.kernel.org/stable/c/1699b4d502eda3c7ea4070debad3ee570b5091b1 - Patch
References () https://git.kernel.org/stable/c/3240e12fe203a3a79b9814e83327106b770ed7b0 - () https://git.kernel.org/stable/c/3240e12fe203a3a79b9814e83327106b770ed7b0 - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE CWE-476
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: dsa: fix NULL pointer dereference in dsa_port_reset_vlan_filtering La variable de iterador "ds" utilizada en dsa_port_reset_vlan_filtering() -> dsa_switch_for_each_port() sobrescribe el "dp" recibido como argumento, que luego se utiliza para llamar a dsa_port_vlan_filtering() correctamente. Como resultado, los conmutadores que ingresan a esa ruta de código (los que tienen vlan_filtering_is_global=true) desreferenciarán un dp no válido en dsa_port_reset_vlan_filtering() después de abandonar un puente con reconocimiento de VLAN. Utilice una variable de iterador "other_dp" dedicada para evitar que esto suceda.
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*

26 Feb 2025, 07:01

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:01

Updated : 2025-03-10 20:23

NVD link : CVE-2022-49582

Mitre link : CVE-2022-49582

CVE.ORG link : CVE-2022-49582

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference