PT-2018-2823 · Linux · Linux Kernel

Publicado 2018-12-03 · Atualizado 2018-12-03

Positive Technologies (AI Summary)

CVSS v2.0

4.7

Média

Vetor base

AV:L/AC:M/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is caused by memory release errors in the Linux kernel's drivers/isdn/hisax/avma1 cs.ko module. Exploitation of this issue can allow an attacker to cause a denial of service in the operating system by disconnecting a PCMCIA device emulating AVM A1. This occurs because the avma1cs detach function in avma1 cs.c attempts to free the memory pointed to by link->priv, which contains an integer returned by hisax init pcmcia (representing the number of card objects, nrcards), rather than a memory pointer. As a result, there may be an attempt to free an unallocated or unclaimed memory region.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Enumeração de Fraquezas

CWE-763

Identificadores relacionados

BDU:2019-02280

Produtos afetados

Linux Kernel

Referências · 1

• https://bdu.fstec.ru/vul/2019-02280 · Nota de Segurança