Описание
The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always initialize the crc32c checksum driver, which allows attackers to cause a denial of service (ext4_xattr_inode_hash NULL pointer dereference and system crash) via a crafted ext4 image.
The Linux kernel is vulnerable to a NULL pointer dereference in the ext4/xattr.c:ext4_xattr_inode_hash() function. An attacker could trick a legitimate user or a privileged attacker could exploit this to cause a NULL pointer dereference with a crafted ext4 image.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Not affected | ||
| Red Hat Enterprise Linux 6 | kernel | Fix deferred | ||
| Red Hat Enterprise Linux 8 | kernel | Not affected | ||
| Red Hat Enterprise MRG 2 | realtime-kernel | Fix deferred | ||
| Red Hat Enterprise Linux 7 | kernel-rt | Fixed | RHSA-2018:3096 | 30.10.2018 |
| Red Hat Enterprise Linux 7 | kernel-alt | Fixed | RHSA-2018:2948 | 30.10.2018 |
| Red Hat Enterprise Linux 7 | kernel | Fixed | RHSA-2018:3083 | 30.10.2018 |
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Дополнительная информация
Статус:
4.6 Medium
CVSS3
Связанные уязвимости
The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always initialize the crc32c checksum driver, which allows attackers to cause a denial of service (ext4_xattr_inode_hash NULL pointer dereference and system crash) via a crafted ext4 image.
The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always initialize the crc32c checksum driver, which allows attackers to cause a denial of service (ext4_xattr_inode_hash NULL pointer dereference 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 4.15.15 does not always initialize the crc32c checksum driver, which allows attackers to cause a denial of service (ext4_xattr_inode_hash NULL pointer dereference and system crash) via a crafted ext4 image.
Уязвимость функции ext4_fill_super ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании
4.6 Medium
CVSS3