What is CVE-2022-49110?

CVE-2022-49110 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 4.19.206 onward and patched in 5.15.34, 5.16.20, 5.17.3 and others. CVE-2022-49110 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49110?

CVE-2022-49110 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-2022-49110?

Yes, CVE-2022-49110 has been patched. Fixed versions include 5.15.34, 5.16.20, 5.17.3 and others. If you are running Linux kernel 4.19.206 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49110 actively exploited?

CVE-2022-49110 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-49110

Medium

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: revisit gc autotuning as of commit 4608fdfc07e1 ("netfilter: conntrack: collect all entries in one cycle") conntrack gc was changed to run every 2 minutes. On systems where conntrack hash table is set to large value, most evictions happen from gc worker rather than the packet path due to hash table distribution. This causes netlink event overflows when events are collected. This change collects average expiry of scanned entries and reschedules to the average remaining value, within 1 to 60 second interval. To avoid event overflows, reschedule after each bucket and add a limit for both run time and number of evictions per run. If more entries have to be evicted, reschedule and restart 1 jiffy into the future.

Package Linux Kernel

Published 2025-02-26

Last modified 2025-09-23

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 4.19.206, 5.4.144, 5.10.62, 5.13.14, 5.14 and later are affected. Fixed in 5.15.34, 5.16.20, 5.17.3, 5.18 and their respective stable series.

Affected from

≥ 4.19.206 ≥ 5.4.144 ≥ 5.10.62 ≥ 5.13.14 ≥ 5.14

Fixed in

✓ 5.15.34 5.15.x ✓ 5.16.20 5.16.x ✓ 5.17.3 5.17.x ✓ 5.18

References

4 total

Kernel Git
https://git.kernel.org/stable/c/2cfadb761d3d0219412fd8150faea60c7e863833

Patch
Kernel Git
https://git.kernel.org/stable/c/58d52743ae85d28c9335c6034d6ce350b8689951

Patch
Kernel Git
https://git.kernel.org/stable/c/592e57591826f3d09c28d755a39ea8e9d13705ad

Patch
Kernel Git
https://git.kernel.org/stable/c/7cd361d5e6d986c0d4cafb9ceaa803359048ae15

Patch

Details

CVE ID CVE-2022-49110

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-02-26

Modified 2025-09-23

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49110?

CVE-2022-49110 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.19.206 onward and has been patched in 5.15.34, 5.16.20, 5.17.3 and others. CVE-2022-49110 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49110?

CVE-2022-49110 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-2022-49110?

Yes. CVE-2022-49110 has been patched. Fixed versions include 5.15.34, 5.16.20, 5.17.3 and others. If you are running Linux kernel 4.19.206 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49110 actively exploited?

No. CVE-2022-49110 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.