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CVE-2022-49110

17
FAUCET Score

CVE-2022-49110 addresses a vulnerability in the Linux kernel's Netfilter conntrack module, specifically impacting systems with large conntrack hash tables. The issue stems from an inefficient garbage collection (GC) mechanism, leading to netlink event overflows and potential denial of service (DoS) due to excessive evictions. Rated Medium severity (CVSS 5.5), this local vulnerability requires low privileges and has a high impact on availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.15.34CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 5.16.20CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.17, < 5.17.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.19.206, < 4.20CPE match
cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.10.62, < 5.11CPE match
cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.25%
Probability of exploitation in next 30 days
EPSS Percentile
16.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0025 is in the 68th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (2)

redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2022-49110Moderate

kernel: netfilter: conntrack: revisit gc autotuning

Feb 26, 2025

References

git.kernel.org / stable/c/2cfadb761d3d0219412fd8150faea60c7e863833
Patch
git.kernel.org / stable/c/58d52743ae85d28c9335c6034d6ce350b8689951
Patch
git.kernel.org / stable/c/592e57591826f3d09c28d755a39ea8e9d13705ad
Patch
git.kernel.org / stable/c/7cd361d5e6d986c0d4cafb9ceaa803359048ae15
Patch