What is CVE-2022-48643?

CVE-2022-48643 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.10.140 onward and patched in 5.10.146, 5.15.71 and 5.19.12. CVE-2022-48643 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-48643?

CVE-2022-48643 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2022-48643?

Yes, CVE-2022-48643 has been patched. Fixed versions include 5.10.146, 5.15.71 and 5.19.12. If you are running Linux kernel 5.10.140 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-48643 actively exploited?

CVE-2022-48643 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-48643

Medium

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().

Package Linux Kernel

Published 2024-04-28

Last modified 2025-09-18

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-191

CVE-2022-48643 is classified as CWE-191

See CWE-191 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 5.10.140, 5.15.64, 5.19.6 and later are affected. Fixed in 5.10.146, 5.15.71, 5.19.12 and their respective stable series.

Affected from

≥ 5.10.140 ≥ 5.15.64 ≥ 5.19.6

Fixed in

✓ 5.10.146 5.10.x ✓ 5.15.71 5.15.x ✓ 5.19.12 5.19.x

References

4 total

Kernel Git
https://git.kernel.org/stable/c/710e3f526bd23a0d33435dedc52c3144de284378

Patch
Kernel Git
https://git.kernel.org/stable/c/8bcad2a931313aeba076b76922d5813ef97d0a91

Patch
Kernel Git
https://git.kernel.org/stable/c/91aa52652f4b37089aff3cb53e83049d826fef6d

Patch
Kernel Git
https://git.kernel.org/stable/c/921ebde3c0d22c8cba74ce8eb3cc4626abff1ccd

Patch

Details

CVE ID CVE-2022-48643

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-04-28

Modified 2025-09-18

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-48643?

CVE-2022-48643 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.10.140 onward and has been patched in 5.10.146, 5.15.71 and 5.19.12. CVE-2022-48643 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-48643?

CVE-2022-48643 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2022-48643?

Yes. CVE-2022-48643 has been patched. Fixed versions include 5.10.146, 5.15.71 and 5.19.12. If you are running Linux kernel 5.10.140 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-48643 actively exploited?

No. CVE-2022-48643 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.