Описание
The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.9.8 does not properly validate meta block groups, which allows physically proximate attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image.
Mounting a crafted EXT4 image read-only leads to an attacker controlled memory corruption and SLAB-Out-of-Bounds reads.
Отчет
This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7, MRG-2 and realtime kernels. This has been rated as having Moderate security impact and is currently planned to be addressed in future updates. This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 and 6.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Not affected | ||
| Red Hat Enterprise Linux 6 | kernel | Not affected | ||
| Red Hat Enterprise Linux 7 | kernel-rt | Fixed | RHSA-2017:1298 | 25.05.2017 |
| Red Hat Enterprise Linux 7 | kernel | Fixed | RHSA-2017:1308 | 25.05.2017 |
| Red Hat Enterprise MRG 2 | kernel-rt | Fixed | RHSA-2017:1297 | 25.05.2017 |
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Дополнительная информация
Статус:
6.2 Medium
CVSS3
4.7 Medium
CVSS2
Связанные уязвимости
The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.9.8 does not properly validate meta block groups, which allows physically proximate attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image.
The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.9.8 does not properly validate meta block groups, which allows physically proximate attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image.
The ext4_fill_super function in fs/ext4/super.c in the Linux kernel th ...
The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.9.8 does not properly validate meta block groups, which allows physically proximate attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image.
ELSA-2017-1308: kernel security, bug fix, and enhancement update (IMPORTANT)
6.2 Medium
CVSS3
4.7 Medium
CVSS2