CVE-2021-38166

2021-08-0700:00:00

ubuntu.com

7.8 High

CVSS3

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

4.6 Medium

CVSS2

Access Vector

LOCAL

Access 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

0.0004 Low

EPSS

Percentile

13.3%

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
ubuntu22.04noarchlinux-azure-fde< anyUNKNOWN
ubuntu21.04noarchlinux-gcp< 5.11.0-1021.23UNKNOWN
ubuntu20.04noarchlinux-gcp-5.11< 5.11.0-1021.23~20.04.1UNKNOWN
ubuntu22.04noarchlinux-gkeop< anyUNKNOWN
ubuntu20.04noarchlinux-hwe-5.11< 5.11.0-38.42~20.04.1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	21.04	noarch	linux	< 5.11.0-38.42	UNKNOWN
ubuntu	21.04	noarch	linux-aws	< 5.11.0-1020.21	UNKNOWN
ubuntu	20.04	noarch	linux-aws-5.11	< 5.11.0-1020.21~20.04.2	UNKNOWN
ubuntu	21.04	noarch	linux-azure	< 5.11.0-1020.21	UNKNOWN
ubuntu	20.04	noarch	linux-azure-5.11	< 5.11.0-1020.21~20.04.1	UNKNOWN
ubuntu	22.04	noarch	linux-azure-fde	< any	UNKNOWN
ubuntu	21.04	noarch	linux-gcp	< 5.11.0-1021.23	UNKNOWN
ubuntu	20.04	noarch	linux-gcp-5.11	< 5.11.0-1021.23~20.04.1	UNKNOWN
ubuntu	22.04	noarch	linux-gkeop	< any	UNKNOWN
ubuntu	20.04	noarch	linux-hwe-5.11	< 5.11.0-38.42~20.04.1	UNKNOWN