PT-2018-6841 · Linux+5 · Linux Kernel+5
Andrey Konovalov
·
Publicado
2017-12-21
·
Atualizado
2023-08-16
·
CVE-2017-18344
CVSS v3.1
5.5
Média
| Vetor | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Name of the Vulnerable Software and Affected Versions:
Linux kernel versions prior to 4.14.8
Description:
The issue arises from improper validation of the
sigevent->sigev notify field in the timer create syscall implementation. This leads to out-of-bounds access when the show timer function is called, such as when the /proc/$PID/timers endpoint is read. As a result, userspace applications can read arbitrary kernel memory, but only on kernels built with CONFIG POSIX TIMERS and CONFIG CHECKPOINT RESTORE.Recommendations:
For Linux kernel versions prior to 4.14.8, update to version 4.14.8 or later to resolve the issue.
Exploit
Correção
Out of bounds Read
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Enumeração de Fraquezas
Identificadores relacionados
Produtos afetados
Alt Linux
Centos
Linux Kernel
Red Hat
Suse
Ubuntu