CVE-2022-48643

Severity CVSS v4.0:

Pending analysis

Type:

CWE-191 Integer Underflow (Wrap or Wraparound)

Publication date:

28/04/2024

Last modified:

18/09/2025

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix nft_counters_enabled underflow at nf_tables_addchain() syzbot is reporting underflow of nft_counters_enabled counter at nf_tables_addchain() [1], for commit 43eb8949cfdffa76 ("netfilter: nf_tables: do not leave chain stats enabled on error") missed that nf_tables_chain_destroy() after nft_basechain_init() in the error path of nf_tables_addchain() decrements the counter because nft_basechain_init() makes nft_is_base_chain() return true by setting NFT_CHAIN_BASE flag. Increment the counter immediately after returning from nft_basechain_init().

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	5.10.140 (including)	5.10.146 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.15.64 (including)	5.15.71 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.19.6 (including)	5.19.12 (excluding)
cpe:2.3:o:linux:linux_kernel:6.0:rc3::::::
cpe:2.3:o:linux:linux_kernel:6.0:rc4::::::
cpe:2.3:o:linux:linux_kernel:6.0:rc5::::::
cpe:2.3:o:linux:linux_kernel:6.0:rc6::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2022-48643

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools