What is CVE-2022-49183?

CVE-2022-49183 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.10.103 onward and patched in 5.10.258, 5.15.33, 5.16.19 and others. CVE-2022-49183 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49183?

CVE-2022-49183 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-2022-49183?

Yes, CVE-2022-49183 has been patched. Fixed versions include 5.10.258, 5.15.33, 5.16.19 and others. If you are running Linux kernel 5.10.103 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49183 actively exploited?

CVE-2022-49183 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-49183

Medium

In the Linux kernel, the following vulnerability has been resolved: net/sched: act_ct: fix ref leak when switching zones When switching zones or network namespaces without doing a ct clear in between, it is now leaking a reference to the old ct entry. That's because tcf_ct_skb_nfct_cached() returns false and tcf_ct_flow_table_lookup() may simply overwrite it. The fix is to, as the ct entry is not reusable, free it already at tcf_ct_skb_nfct_cached().

Package Linux Kernel

Published 2025-02-26

Last modified 2026-06-01

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

Affected versions

Linux kernel versions 5.10.103, 5.15.26, 5.16.12, 5.17 and later are affected. Fixed in 5.10.258, 5.15.33, 5.16.19, 5.17.2, 5.18 and their respective stable series.

Affected from

≥ 5.10.103 ≥ 5.15.26 ≥ 5.16.12 ≥ 5.17

Fixed in

✓ 5.10.258 5.10.x ✓ 5.15.33 5.15.x ✓ 5.16.19 5.16.x ✓ 5.17.2 5.17.x ✓ 5.18

References

5 total

Kernel Git
https://git.kernel.org/stable/c/4bb42d73def9411e5cad885b9811987d72431df1

Patch
Kernel Git
https://git.kernel.org/stable/c/b24793a37d91aacad7cb9893b226a7924a89636a

Patch
Kernel Git
https://git.kernel.org/stable/c/bcb74e132a76ce0502bb33d5b65533a4ed72d159

Patch
Kernel Git
https://git.kernel.org/stable/c/bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d

Patch
Kernel Git
https://git.kernel.org/stable/c/9222a08be539cbb7a8e0d46cbc7ab9e4db273eb8

Details

CVE ID CVE-2022-49183

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-02-26

Modified 2026-06-01

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49183?

CVE-2022-49183 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.10.103 onward and has been patched in 5.10.258, 5.15.33, 5.16.19 and others. CVE-2022-49183 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49183?

CVE-2022-49183 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-2022-49183?

Yes. CVE-2022-49183 has been patched. Fixed versions include 5.10.258, 5.15.33, 5.16.19 and others. If you are running Linux kernel 5.10.103 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49183 actively exploited?

No. CVE-2022-49183 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.