CVE-2021-46283

2022-01-1100:00:00

ubuntu.com

linux kernel

denial of service

nf_tables_newset

CVSS2

4.9

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

Percentile

5.1%

JSON

nf_tables_newset in net/netfilter/nf_tables_api.c in the Linux kernel
before 5.12.13 allows local users to cause a denial of service (NULL
pointer dereference and general protection fault) because of the missing
initialization for nft_set_elem_expr_alloc. A local user can set a
netfilter table expression in their own namespace.

OSVersionArchitecturePackageVersionFilename
ubuntu20.04noarchlinux-aws-5.11< 5.11.0-1017.18~20.04.1UNKNOWN
ubuntu20.04noarchlinux-azure-5.11< 5.11.0-1015.16~20.04.1UNKNOWN
ubuntu20.04noarchlinux-gcp-5.11< 5.11.0-1018.20~20.04.2UNKNOWN
ubuntu20.04noarchlinux-oem-5.10< 5.10.0-1050.52UNKNOWN
ubuntu20.04noarchlinux-oracle-5.11< 5.11.0-1017.18~20.04.1UNKNOWN
ubuntu20.04noarchlinux-riscv-5.11< 5.11.0-1018.19~20.04.2UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	20.04	noarch	linux-aws-5.11	< 5.11.0-1017.18~20.04.1	UNKNOWN
ubuntu	20.04	noarch	linux-azure-5.11	< 5.11.0-1015.16~20.04.1	UNKNOWN
ubuntu	20.04	noarch	linux-gcp-5.11	< 5.11.0-1018.20~20.04.2	UNKNOWN
ubuntu	20.04	noarch	linux-oem-5.10	< 5.10.0-1050.52	UNKNOWN
ubuntu	20.04	noarch	linux-oracle-5.11	< 5.11.0-1017.18~20.04.1	UNKNOWN
ubuntu	20.04	noarch	linux-riscv-5.11	< 5.11.0-1018.19~20.04.2	UNKNOWN