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ubuntucveUbuntu.comUB:CVE-2021-38166
HistoryAug 07, 2021 - 12:00 a.m.

CVE-2021-38166

2021-08-0700:00:00
ubuntu.com
ubuntu.com
17
integer overflow
out-of-bounds write
linux kernel

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0

Percentile

14.2%

JSON

In kernel/bpf/hashtab.c in the Linux kernel through 5.13.8, there is an
integer overflow and out-of-bounds write when many elements are placed in a
single bucket. NOTE: exploitation might be impractical without the
CAP_SYS_ADMIN capability.

OSVersionArchitecturePackageVersionFilename
ubuntu21.04noarchlinux< 5.11.0-38.42UNKNOWN
ubuntu21.04noarchlinux-aws< 5.11.0-1020.21UNKNOWN
ubuntu20.04noarchlinux-aws-5.11< 5.11.0-1020.21~20.04.2UNKNOWN
ubuntu21.04noarchlinux-azure< 5.11.0-1020.21UNKNOWN
ubuntu20.04noarchlinux-azure-5.11< 5.11.0-1020.21~20.04.1UNKNOWN
ubuntu21.04noarchlinux-gcp< 5.11.0-1021.23UNKNOWN
ubuntu20.04noarchlinux-gcp-5.11< 5.11.0-1021.23~20.04.1UNKNOWN
ubuntu20.04noarchlinux-hwe-5.11< 5.11.0-38.42~20.04.1UNKNOWN
ubuntu21.04noarchlinux-kvm< 5.11.0-1018.19UNKNOWN
ubuntu20.04noarchlinux-oem-5.10< 5.10.0-1050.52UNKNOWN
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CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0

Percentile

14.2%

JSON
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