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CVE-2023-1838

Опубликовано: 16 мая 2022
Источник: redhat
CVSS3: 7.1
EPSS Низкий

Описание

A use-after-free flaw was found in vhost_net_set_backend in drivers/vhost/net.c in virtio network subcomponent in the Linux kernel due to a double fget. This flaw could allow a local attacker to crash the system, and could even lead to a kernel information leak problem.

A use-after-free flaw was found in vhost_net_set_backend in drivers/vhost/net.c in the virtio network subcomponent in the Linux kernel due to a double fget. This issue could allow a local attacker to crash the system, and could lead to a kernel information leak problem.

Меры по смягчению последствий

This flaw can be mitigated by preventing the affected Host kernel accelerator (vhost-net) kernel module from loading during the boot time, ensure the module is added to the blacklist file.

Refer: How do I blacklist a kernel module to prevent it from loading automatically? https://access.redhat.com/solutions/41278

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Enterprise Linux 6kernelNot affected
Red Hat Enterprise Linux 7kernelNot affected
Red Hat Enterprise Linux 7kernel-rtNot affected
Red Hat Enterprise Linux 9kernel-rtAffected
Red Hat Enterprise Linux 8kernel-rtFixedRHSA-2024:088120.02.2024
Red Hat Enterprise Linux 8kernelFixedRHSA-2024:089720.02.2024
Red Hat Enterprise Linux 8.6 Extended Update SupportkernelFixedRHSA-2024:041225.01.2024
Red Hat Enterprise Linux 8.8 Extended Update SupportkernelFixedRHSA-2024:057530.01.2024
Red Hat Enterprise Linux 9kernelFixedRHSA-2023:658307.11.2023
Red Hat Enterprise Linux 9kernelFixedRHSA-2023:658307.11.2023

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Дополнительная информация

Статус:

Moderate
Дефект:
CWE-416
https://bugzilla.redhat.com/show_bug.cgi?id=2087568kernel: Possible use-after-free since the two fdget() during vhost_net_set_backend()

EPSS

Процентиль: 1%
0.00011
Низкий

7.1 High

CVSS3

Связанные уязвимости

CVSS3: 7.1
ubuntu
около 2 лет назад

A use-after-free flaw was found in vhost_net_set_backend in drivers/vhost/net.c in virtio network subcomponent in the Linux kernel due to a double fget. This flaw could allow a local attacker to crash the system, and could even lead to a kernel information leak problem.

CVSS3: 7.1
nvd
около 2 лет назад

A use-after-free flaw was found in vhost_net_set_backend in drivers/vhost/net.c in virtio network subcomponent in the Linux kernel due to a double fget. This flaw could allow a local attacker to crash the system, and could even lead to a kernel information leak problem.

CVSS3: 7.1
msrc
около 2 лет назад

Описание отсутствует

CVSS3: 7.1
debian
около 2 лет назад

A use-after-free flaw was found in vhost_net_set_backend in drivers/vh ...

CVSS3: 7.1
github
около 2 лет назад

A use-after-free flaw was found in vhost_net_set_backend in drivers/vhost/net.c in virtio network subcomponent in the Linux kernel due to a double fget. This flaw could allow a local attacker to crash the system, and could even lead to a kernel information leak problem.

EPSS

Процентиль: 1%
0.00011
Низкий

7.1 High

CVSS3

Уязвимость CVE-2023-1838