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CVE-2025-38474

20
FAUCET Score

CVE-2025-38474 is a vulnerability in the Linux kernel's Sierra USB network driver, affecting Debian and Linux kernel products. The flaw stems from an insufficient check for the presence of an interrupt input endpoint, potentially leading to a denial of service. Rated Medium (CVSS 5.5), it requires local access with low privileges and no user interaction to achieve high availability impact. There is no evidence of active exploitation, nor are public exploit tools like Metasploit or Nuclei available, though it has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.6.35, < 5.4.297CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.5, < 5.10.241CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.15.190CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 6.1.147CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.2, < 6.6.100CPE 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
0.16%
Probability of exploitation in next 30 days
EPSS Percentile
5.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0016 is in the 32nd 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

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 (10)

microsoftpatch availablevia msrc
Product: cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0Fixed in: 5.15.200.1-1
microsoftpatch availablevia msrc
Product: 20412-17084Fixed in: 6.6.104.2-1
microsoftpatch availablevia msrc
Product: 17087-17086Fixed in: 5.15.200.1-1
microsoftpatch availablevia msrc
Product: azl3 kernel 6.6.96.2-2 on Azure Linux 3.0Fixed in: 6.6.104.2-1
ubuntupatch availablevia ubuntu_usn
Product: linux-azure (noble)Fixed in: 6.8.0-1046.52
ubuntupatch availablevia ubuntu_usn
Product: linux-azure-6.8 (jammy)Fixed in: 6.8.0-1051.57~22.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-xilinx (noble)Fixed in: 6.8.0-1023.24
ubuntupatch availablevia ubuntu_usn
Product: linux-ibm-6.8 (jammy)Fixed in: 6.8.0-1044.44~22.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-ibm (noble)Fixed in: 6.8.0-1044.44
ubuntupatch availablevia ubuntu_usn
Product: linux-azure-fips (noble)Fixed in: 6.8.0-1046.52+fips1

Vendor Advisories (7)

ubuntuUSN-8126-1

Linux kernel (Azure) vulnerabilities

Mar 25, 2026
ubuntuUSN-8074-2

Linux kernel (Azure FIPS) vulnerabilities

Mar 4, 2026
ubuntuUSN-8074-1

Linux kernel (Azure) vulnerabilities

Mar 4, 2026
ubuntuUSN-8052-2

Linux kernel (Xilinx) vulnerabilities

Feb 24, 2026
ubuntuUSN-8028-8

Linux kernel (IBM) vulnerabilities

Feb 24, 2026
redhatCVE-2025-38474Moderate

kernel: Linux kernel: Local privilege escalation or denial of service in usb: net: sierra driver

Jul 28, 2025
microsoft2025-Jul/CVE-2025-38474

usb: net: sierra: check for no status endpoint

Jul 8, 2025

References

git.kernel.org / stable/c/0a263ccb905b4ae2af381cd4280bd8d2477b98b8
Patch
git.kernel.org / stable/c/4c4ca3c46167518f8534ed70f6e3b4bf86c4d158
Patch
git.kernel.org / stable/c/5408cc668e596c81cdd29e137225432aa40d1785
Patch
git.kernel.org / stable/c/5849980faea1c792d1d5e54fdbf1e69ac0a9bfb9
Patch
git.kernel.org / stable/c/5dd6a441748dad2f02e27b256984ca0b2d4546b6
Patch
git.kernel.org / stable/c/65c666aff44eb7f9079c55331abd9687fb77ba2d
Patch
git.kernel.org / stable/c/a6a238c4126eb3ddb495d3f960193ca5bb778d92
Patch
git.kernel.org / stable/c/bfe8ef373986e8f185d3d6613eb1801a8749837a
Patch
lists.debian.org / debian-lts-announce/2025/10/msg00007.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2025/10/msg00008.html
Mailing ListThird Party Advisory