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CVE-2025-38313

21
FAUCET Score

CVE-2025-38313 is a double-free vulnerability in the Linux kernel's fsl-mc bus driver, specifically affecting Debian and other Linux distributions. This flaw, rated High severity with a CVSS score of 7.8, could allow a local attacker to achieve high confidentiality, integrity, and availability impacts. While no public exploit code or active exploitation has been observed, the vulnerability has garnered significant community discussion and media coverage, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.13, < 5.4.295CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.5, < 5.10.239CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.15.186CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 6.1.142CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.2, < 6.6.94CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
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 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0016 is in the 23rd percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (12)

microsoftpatch availablevia msrc
Product: azl3 kernel 6.6.92.2-2 on Azure Linux 3.0Fixed in: 6.6.96.1-1
microsoftpatch availablevia msrc
Product: azl3 kernel 6.6.96.1-1 on Azure Linux 3.0Fixed in: 6.6.96.1-1
microsoftpatch availablevia msrc
Product: 17085-17084Fixed in: 6.6.96.1-1
microsoftpatch availablevia msrc
Product: 19880-17084Fixed in: 6.6.96.1-1
ubuntupatch availablevia ubuntu_usn
Product: linux-azure (noble)Fixed in: 6.8.0-1046.52
ubuntupatch availablevia ubuntu_usn
Product: linux-xilinx (noble)Fixed in: 6.8.0-1023.24
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-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
grafanavendor investigatingvia llm_extracted
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: kernel

Vendor Advisories (8)

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
grafanallm-grafana-3bfe68bd8f94bc6dCRITICAL

HP ThinPro 8.1 SP9 Security Updates

Feb 2, 2026
redhatCVE-2025-38313Moderate

kernel: Linux kernel: Double-free vulnerability in fsl-mc bus driver can lead to denial of service, information disclosure, or arbitrary code execution.

Jul 10, 2025
microsoft2025-Jul/CVE-2025-38313Moderate

bus: fsl-mc: fix double-free on mc_dev

Jul 8, 2025

References

git.kernel.org / stable/c/12e4431e5078847791936820bd39df9e1ee26d2e
Patch
git.kernel.org / stable/c/1d5baab39e5b09a76870b345cdee7933871b881f
Patch
git.kernel.org / stable/c/3135e03a92f6b5259d0a7f25f728e9e7866ede3f
Patch
git.kernel.org / stable/c/4b23c46eb2d88924b93aca647bde9a4b9cf62cf9
Patch
git.kernel.org / stable/c/7002b954c4a8b9965ba0f139812ee4a6f71beac8
Patch
git.kernel.org / stable/c/873d47114fd5e5a1cad2018843671537cc71ac84
Patch
git.kernel.org / stable/c/b2057374f326303c86d8423415ab58656eebc695
Patch
git.kernel.org / stable/c/d694bf8a9acdbd061596f3e7549bc8cb70750a60
Patch
lists.debian.org / debian-lts-announce/2025/10/msg00007.html
Third Party Advisory
lists.debian.org / debian-lts-announce/2025/10/msg00008.html
Third Party Advisory