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CVE-2014-0205

Опубликовано: 09 сент. 2014
Источник: redhat
CVSS2: 6.9

Описание

The futex_wait function in kernel/futex.c in the Linux kernel before 2.6.37 does not properly maintain a certain reference count during requeue operations, which allows local users to cause a denial of service (use-after-free and system crash) or possibly gain privileges via a crafted application that triggers a zero count.

A flaw was found in the way the Linux kernel's futex subsystem handled reference counting when requeuing futexes during futex_wait(). A local, unprivileged user could use this flaw to zero out the reference counter of an inode or an mm struct that backs up the memory area of the futex, which could lead to a use-after-free flaw, resulting in a system crash or, potentially, privilege escalation.

Отчет

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG-2. Future Linux kernel updates for Red Hat Enterprise Linux 6 may address this issue.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Enterprise Linux 5kernelNot affected
Red Hat Enterprise Linux 7kernelNot affected
Red Hat Enterprise Linux Extended Update Support 6.3kernelAffected
Red Hat Enterprise MRG 2realtime-kernelNot affected
Red Hat Enterprise Linux 6kernelFixedRHSA-2014:116709.09.2014
Red Hat Enterprise Linux 6.2 Advanced Update SupportkernelFixedRHSA-2014:176330.10.2014
Red Hat Enterprise Linux 6.4 Extended Update SupportkernelFixedRHSA-2014:136507.10.2014

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Дополнительная информация

Статус:

Important
Дефект:
CWE-682->CWE-416
https://bugzilla.redhat.com/show_bug.cgi?id=1094455kernel: futex: refcount issue in case of requeue

6.9 Medium

CVSS2

Связанные уязвимости

ubuntu
почти 11 лет назад

The futex_wait function in kernel/futex.c in the Linux kernel before 2.6.37 does not properly maintain a certain reference count during requeue operations, which allows local users to cause a denial of service (use-after-free and system crash) or possibly gain privileges via a crafted application that triggers a zero count.

nvd
почти 11 лет назад

The futex_wait function in kernel/futex.c in the Linux kernel before 2.6.37 does not properly maintain a certain reference count during requeue operations, which allows local users to cause a denial of service (use-after-free and system crash) or possibly gain privileges via a crafted application that triggers a zero count.

debian
почти 11 лет назад

The futex_wait function in kernel/futex.c in the Linux kernel before 2 ...

github
около 3 лет назад

The futex_wait function in kernel/futex.c in the Linux kernel before 2.6.37 does not properly maintain a certain reference count during requeue operations, which allows local users to cause a denial of service (use-after-free and system crash) or possibly gain privileges via a crafted application that triggers a zero count.

oracle-oval
почти 11 лет назад

ELSA-2014-3073: unbreakable enterprise kernel security update (IMPORTANT)

6.9 Medium

CVSS2