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CVE-2021-3748

Опубликовано: 23 мар. 2022
Источник: debian
EPSS Низкий

Описание

A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process.

Пакеты

ПакетСтатусВерсия исправленияРелизТип
qemufixed1:6.1+dfsg-6package

Примечания

  • https://bugzilla.redhat.com/show_bug.cgi?id=1998514

  • https://gitlab.com/qemu-project/qemu/-/commit/bedd7e93d01961fcb16a97ae45d93acf357e11f6 (v6.2.0-rc0)

  • When fixing this issue make sure to not open CVE-2022-26353

EPSS

Процентиль: 4%
0.0002
Низкий

Связанные уязвимости

CVSS3: 7.5
ubuntu
около 3 лет назад

A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process.

CVSS3: 7.5
redhat
почти 4 года назад

A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process.

CVSS3: 7.5
nvd
около 3 лет назад

A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process.

CVSS3: 7.5
msrc
больше 2 лет назад

Описание отсутствует

CVSS3: 8.8
github
около 3 лет назад

A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process.

EPSS

Процентиль: 4%
0.0002
Низкий