PT-2017-4261 · Linux+3 · Linux Kernel+3
Eric Biggers
·
Publicado
2017-10-13
·
Atualizado
2018-10-30
·
CVE-2017-15299
CVSS v3.1
5.5
Média
| Vetor | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 4.13.7
Description
The issue is related to errors in pointer dereferencing in the KEYS subsystem of the Linux kernel. It can be exploited by an attacker to cause a denial of service, resulting in a system crash due to a NULL pointer dereference. The exploitation is possible through a crafted system call, specifically when using
add key for a key that already exists but is uninstantiated.Recommendations
For Linux kernel versions prior to 4.13.7, update to version 4.13.7 or later to resolve the issue. As a temporary workaround, consider restricting access to the
add key system call to minimize the risk of exploitation.Exploit
Correção
DoS
NULL Pointer Dereference
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Enumeração de Fraquezas
Identificadores relacionados
Produtos afetados
Alt Linux
Linux Kernel
Suse
Ubuntu