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CVE-2021-20257

Опубликовано: 10 фев. 2021
Источник: redhat
CVSS3: 3.2
EPSS Низкий

Описание

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Отчет

This issue affects the version of the qemu-kvm package shipped with Red Hat Enterprise Linux 6, 7 and 8. Future qemu-kvm package updates for Red Hat Enterprise Linux 7 and 8 may address this issue. This issue has been rated as having Low security impact and is not currently planned to be addressed in future updates of Red Hat Enterprise Linux 5 and 6. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Enterprise Linux 6qemu-kvmOut of support scope
Red Hat Enterprise Linux 7qemu-kvmFix deferred
Red Hat Enterprise Linux 7qemu-kvm-maNot affected
Red Hat Enterprise Linux 7qemu-kvm-rhevFix deferred
Red Hat Enterprise Linux 8 Advanced Virtualizationvirt:8.2/qemu-kvmWill not fix
Red Hat Enterprise Linux 8 Advanced Virtualizationvirt:8.3/qemu-kvmWill not fix
Red Hat Enterprise Linux 8 Advanced Virtualizationvirt:av/qemu-kvmAffected
Red Hat OpenStack Platform 10 (Newton)qemu-kvm-rhevOut of support scope
Red Hat OpenStack Platform 13 (Queens)qemu-kvm-rhevOut of support scope
Advanced Virtualization for RHEL 8.5.0.ZvirtFixedRHSA-2022:008111.01.2022

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Дополнительная информация

Статус:

Low
Дефект:
CWE-835
https://bugzilla.redhat.com/show_bug.cgi?id=1930087QEMU: net: e1000: infinite loop while processing transmit descriptors

EPSS

Процентиль: 6%
0.00026
Низкий

3.2 Low

CVSS3

Связанные уязвимости

CVSS3: 6.5
ubuntu
больше 3 лет назад

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

CVSS3: 6.5
nvd
больше 3 лет назад

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

CVSS3: 6.5
msrc
больше 2 лет назад

Описание отсутствует

CVSS3: 6.5
debian
больше 3 лет назад

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. ...

CVSS3: 6.5
github
больше 3 лет назад

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

EPSS

Процентиль: 6%
0.00026
Низкий

3.2 Low

CVSS3