Описание
security/keys/keyctl.c in the Linux kernel before 4.11.5 does not consider the case of a NULL payload in conjunction with a nonzero length value, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted add_key or keyctl system call, a different vulnerability than CVE-2017-12192.
A flaw was found in the implementation of associative arrays where the add_key systemcall and KEYCTL_UPDATE operations allowed for a NULL payload with a nonzero length. When accessing the payload within this length parameters value, an unprivileged user could trivially cause a NULL pointer dereference (kernel oops).
Отчет
This issue affects the Linux kernel packages as shipped with Red Hat Enterprise
Linux 5,6,7, MRG-2 and realtime kernels.
Red Hat Enterprise Linux 5 has transitioned to Production phase 3.
During the Production 3 Phase, Critical impact Security Advisories (RHSAs)
and selected Urgent Priority Bug Fix Advisories (RHBAs) may be released
as they become available.
At this time this bug is not meet this critera and is unlikley to be fixed
for these releases.
The official life cycle policy can be reviewed here:
http://redhat.com/rhel/lifecycle
Future Linux kernel updates for the products in production phase 1 and 2, namely Red Hat Enterprise
Linux 6, 7 and MRG-2 may address this issue.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Will not fix | ||
| Red Hat Enterprise Linux 6 | kernel | Affected | ||
| Red Hat Enterprise Linux 7 | kernel-alt | Not affected | ||
| Red Hat Enterprise MRG 2 | realtime-kernel | Affected | ||
| Red Hat Enterprise Linux 7 | kernel-rt | Fixed | RHSA-2018:0676 | 10.04.2018 |
| Red Hat Enterprise Linux 7 | kernel | Fixed | RHSA-2018:1062 | 10.04.2018 |
| Red Hat Enterprise Linux 7.4 Extended Update Support | kernel | Fixed | RHSA-2019:1946 | 30.07.2019 |
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Дополнительная информация
Статус:
EPSS
5.5 Medium
CVSS3
Связанные уязвимости
security/keys/keyctl.c in the Linux kernel before 4.11.5 does not consider the case of a NULL payload in conjunction with a nonzero length value, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted add_key or keyctl system call, a different vulnerability than CVE-2017-12192.
security/keys/keyctl.c in the Linux kernel before 4.11.5 does not consider the case of a NULL payload in conjunction with a nonzero length value, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted add_key or keyctl system call, a different vulnerability than CVE-2017-12192.
security/keys/keyctl.c in the Linux kernel before 4.11.5 does not cons ...
security/keys/keyctl.c in the Linux kernel before 4.11.5 does not consider the case of a NULL payload in conjunction with a nonzero length value, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted add_key or keyctl system call, a different vulnerability than CVE-2017-12192.
Security update for Linux Kernel Live Patch 18 for SLE 12 SP1
EPSS
5.5 Medium
CVSS3