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CVE-2021-26931

Опубликовано: 17 фев. 2021
Источник: nvd
CVSS3: 5.5
CVSS2: 1.9
EPSS Низкий

Описание

An issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as used in Xen. Block, net, and SCSI backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially being at least under the influence of guests (such as out of memory conditions), it isn't correct to assume a plain bug. Memory allocations potentially causing such crashes occur only when Linux is running in PV mode, though. This affects drivers/block/xen-blkback/blkback.c and drivers/xen/xen-scsiback.c.

Ссылки

Уязвимые конфигурации

Конфигурация 1
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Версия от 2.6.39 (включая) до 5.10.16 (включая)
Конфигурация 2

Одно из

cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
Конфигурация 3
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

EPSS

Процентиль: 38%
0.00158
Низкий

5.5 Medium

CVSS3

1.9 Low

CVSS2

Дефекты

CWE-770

Связанные уязвимости

CVSS3: 5.5
ubuntu
больше 4 лет назад

An issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as used in Xen. Block, net, and SCSI backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially being at least under the influence of guests (such as out of memory conditions), it isn't correct to assume a plain bug. Memory allocations potentially causing such crashes occur only when Linux is running in PV mode, though. This affects drivers/block/xen-blkback/blkback.c and drivers/xen/xen-scsiback.c.

CVSS3: 5.5
msrc
больше 4 лет назад

Описание отсутствует

CVSS3: 5.5
debian
больше 4 лет назад

An issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as ...

CVSS3: 5.5
github
около 3 лет назад

An issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as used in Xen. Block, net, and SCSI backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially being at least under the influence of guests (such as out of memory conditions), it isn't correct to assume a plain bug. Memory allocations potentially causing such crashes occur only when Linux is running in PV mode, though. This affects drivers/block/xen-blkback/blkback.c and drivers/xen/xen-scsiback.c.

CVSS3: 5.5
fstec
больше 4 лет назад

Уязвимость драйверов drivers/block/xen-blkback/blkback.c, drivers/xen/xen-scsiback.c ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

EPSS

Процентиль: 38%
0.00158
Низкий

5.5 Medium

CVSS3

1.9 Low

CVSS2

Дефекты

CWE-770