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CVE-2022-49657

17
FAUCET Score

CVE-2022-49657 is a memory leak vulnerability in the Linux kernel's usbnet driver, specifically within the usbnet_write_cmd_async() function, affecting Linux kernel versions. This flaw, rated Medium (CVSS 5.5), could lead to a denial of service (A:H) due to memory exhaustion, requiring local access (AV:L, PR:L) with low attack complexity (AC:L). There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.8, < 4.9.323CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.10, < 4.14.288CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.15, < 4.19.252CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.20, < 5.4.205CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.5, < 5.10.130CPE 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
0.28%
Probability of exploitation in next 30 days
EPSS Percentile
19.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0028 is in the 76th 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

Patch Available

Vendor Patches (6)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-611.5.1.el9_7
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2022-49657Moderate

kernel: usbnet: fix memory leak in error case

Feb 26, 2025

References

git.kernel.org / stable/c/0085da9df3dced730027923a6b48f58e9016af91
Patch
git.kernel.org / stable/c/04894ab34faf40ab72a8a5ab5b404bb0606bbbff
Patch
git.kernel.org / stable/c/3eed421ca5c809da93456f69203d164d5220be3d
Patch
git.kernel.org / stable/c/5269209f54dd8dfd15f9383f3a3a1fe8370764f8
Patch
git.kernel.org / stable/c/b55a21b764c1e182014630fa5486d717484ac58f
Patch
git.kernel.org / stable/c/d5165e657987ff4ba0ace896d4376a3718a9fbc3
Patch
git.kernel.org / stable/c/db89582ff330556188da856e01382ccbf3a5e706
Patch
git.kernel.org / stable/c/e7b4f69946a38209b4a4f660bf0e4cbed94f9b4b
Patch