CVE-2025-38403: vsock/vmci: Clear the vmci transport packet properly when initializing it

Published Jul 25, 2025
·
Updated

In the Linux kernel, the following vulnerability has been resolved:

vsock/vmci: Clear the vmci transport packet properly when initializing it

In vmcitransportpacketinit memset the vmcitransportpacket before populating the fields to avoid any uninitialised data being left in the structure.

Affected Software

20 affected componentsFixes available
Linux Linux kernel
Linux Linux kernel>=3.9<5.4.296
Linux Linux kernel>=5.5<5.10.240
Linux Linux kernel>=5.11<5.15.187
Linux Linux kernel>=5.16<6.1.144
Linux Linux kernel>=6.2<6.6.97
Linux Linux kernel>=6.7<6.12.37
Linux Linux kernel>=6.13<6.15.6
Linux Linux kernel=6.16-rc1
Linux Linux kernel=6.16-rc2
Linux Linux kernel=6.16-rc3
Linux Linux kernel=6.16-rc4
Debian Debian Linux=11.0
Microsoft azl3 kernel 6.6.96.2-1
Microsoft azl3 kernel 6.6.96.2-2
Microsoft cbl2 kernel 5.15.186.1-1
IBM Verify Identity Access<=11.0 - 11.0.2
IBM Security Verify Access<=10.0 - 10.0.9.1
IBM Verify Identity Access Container<=11.0 - 11.0.2
IBM Security Verify Access Container<=10.0 - 10.0.9.1

Event History

Jul 25, 2025
CVE Published
via MITRE·01:08 PM
Data Sourced
via MITRE·01:08 PM
Description
Data Sourced
via Red Hat·02:03 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·02:15 PM
RemedyDescriptionSeverityAffected Software
Sep 3, 2025
Data Sourced
via Microsoft·10:47 PM
DescriptionSeverityWeaknessAffected Software
Sep 4, 2025
Updated
via Microsoft·05:47 AM
SeverityAffected Software
Updated
via Microsoft·05:47 AM
DescriptionSeverity
Jul 8, 2026
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2025-38403?

CVE-2025-38403 is classified as a moderate severity vulnerability in the Linux kernel.

2

How do I fix CVE-2025-38403?

To fix CVE-2025-38403, upgrade the Linux kernel to the latest stable version that includes the patch for this vulnerability.

3

What systems are affected by CVE-2025-38403?

CVE-2025-38403 specifically affects systems running vulnerable versions of the Linux kernel.

4

What is the nature of the vulnerability in CVE-2025-38403?

CVE-2025-38403 involves improper initialization of the vmci transport packet, potentially leading to uninitialized data issues.

5

Is CVE-2025-38403 being actively exploited?

As of now, there are no public reports indicating that CVE-2025-38403 is being actively exploited in the wild.

Contact

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