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CVE-2022-49558

17
FAUCET Score

CVE-2022-49558 is a medium-severity vulnerability affecting the Linux kernel's netfilter component, specifically related to nf_tables. The flaw involves a double unregistration of network hooks during the network namespace exit path, leading to a kernel warning and potential denial of service. With a CVSS score of 5.5, it requires local access and low privileges to exploit, resulting in high availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.4.99, < 5.4.262CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.10.17, < 5.10.198CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11.1, < 5.15.45CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 5.17.13CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.18, < 5.18.2CPE matchmatch criteria
cpe:2.3:o: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
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
18.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 73rd 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 Advisories (1)

redhatCVE-2022-49558Moderate

kernel: netfilter: nf_tables: double hook unregistration in netns path

Feb 26, 2025

References

git.kernel.org / stable/c/3fac8ce48fa9fd61ee9056d3ed48b2edefca8b82
Patch
git.kernel.org / stable/c/86c0154f4c3a56c5db8b9dd09e3ce885382c2c19
Patch
git.kernel.org / stable/c/9c413a8c8bb49cc16796371805ecb260e885bb2b
Patch
git.kernel.org / stable/c/a3940dcf552f2393d1e8f263b386593f98abe829
Patch
git.kernel.org / stable/c/b09e6ccf0d12f9356e8e3508d3e3dce126298538
Patch
git.kernel.org / stable/c/f9a43007d3f7ba76d5e7f9421094f00f2ef202f8
Patch