Описание
The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.
A flaw was found that can be triggered in keyring_search_iterator in keyring.c if type->match is NULL. A local user could use this flaw to crash the system or, potentially, escalate their privileges.
Отчет
This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 as the code which can trigger the flaw is not present in the products listed. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 6, 7 and MRG-2. Future Linux kernel updates for the respective releases might address this issue.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Not affected | ||
| Red Hat Enterprise Linux 6 | kernel | Fixed | RHSA-2020:3548 | 25.08.2020 |
| Red Hat Enterprise Linux 6.6 Advanced Update Support | kernel | Fixed | RHSA-2020:3836 | 24.09.2020 |
| Red Hat Enterprise Linux 7 | kernel-rt | Fixed | RHSA-2017:2077 | 01.08.2017 |
| Red Hat Enterprise Linux 7 | kernel | Fixed | RHSA-2017:1842 | 01.08.2017 |
| Red Hat Enterprise Linux 7.3 Extended Update Support | kernel | Fixed | RHSA-2017:2437 | 08.08.2017 |
| Red Hat Enterprise MRG 2 | kernel-rt | Fixed | RHSA-2017:2444 | 08.08.2017 |
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Дополнительная информация
Статус:
EPSS
7.8 High
CVSS3
Связанные уязвимости
The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.
The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.
The KEYS subsystem in the Linux kernel before 3.18 allows local users ...
The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.
Уязвимость операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании или повысить свои привилегии
EPSS
7.8 High
CVSS3