Описание
The futex_requeue function in kernel/futex.c in the Linux kernel through 3.14.5 does not ensure that calls have two different futex addresses, which allows local users to gain privileges via a crafted FUTEX_REQUEUE command that facilitates unsafe waiter modification.
A flaw was found in the way the Linux kernel's futex subsystem handled the requeuing of certain Priority Inheritance (PI) futexes. A local, unprivileged user could use this flaw to escalate their privileges on the system.
Отчет
This issue did not affect the versions of the Linux kernel packages as shipped with Red Hat Enterprise Linux 5. This issue requires local system access to be exploited. We are currently not aware of any working exploit for Red Hat Enterprise Linux 6 or Red Hat Enterprise MRG 2.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Not affected | ||
| Red Hat Enterprise Linux 6 | kernel | Fixed | RHSA-2014:0771 | 19.06.2014 |
| Red Hat Enterprise Linux 6.2 Advanced Update Support | kernel | Fixed | RHSA-2014:0800 | 26.06.2014 |
| Red Hat Enterprise Linux 6.4 Extended Update Support | kernel | Fixed | RHSA-2014:0900 | 17.07.2014 |
| Red Hat Enterprise Linux 7 | kernel | Fixed | RHSA-2014:0786 | 24.06.2014 |
| Red Hat Enterprise MRG 2 | kernel-rt | Fixed | RHSA-2014:0913 | 22.07.2014 |
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Дополнительная информация
Статус:
7.2 High
CVSS2
Связанные уязвимости
The futex_requeue function in kernel/futex.c in the Linux kernel through 3.14.5 does not ensure that calls have two different futex addresses, which allows local users to gain privileges via a crafted FUTEX_REQUEUE command that facilitates unsafe waiter modification.
The futex_requeue function in kernel/futex.c in the Linux kernel through 3.14.5 does not ensure that calls have two different futex addresses, which allows local users to gain privileges via a crafted FUTEX_REQUEUE command that facilitates unsafe waiter modification.
The futex_requeue function in kernel/futex.c in the Linux kernel throu ...
The futex_requeue function in kernel/futex.c in the Linux kernel through 3.14.5 does not ensure that calls have two different futex addresses, which allows local users to gain privileges via a crafted FUTEX_REQUEUE command that facilitates unsafe waiter modification.
ELSA-2014-3039: Unbreakable Enterprise kernel security update (IMPORTANT)
7.2 High
CVSS2