CVE-2026-43375

net: mctp: fix device leak on probe failure

MEDIUM
5.5
CVSS Score
Published: May 8, 2026 at 02:21 PM UTC
Updated: June 17, 2026 at 10:49 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%

Description

In the Linux kernel, the following vulnerability has been resolved: net: mctp: fix device leak on probe failure Driver core holds a reference to the USB interface and its parent USB device while the interface is bound to a driver and there is no need to take additional references unless the structures are needed after disconnect. This driver takes a reference to the USB device during probe but does not to release it on probe failures. Drop the redundant device reference to fix the leak, reduce cargo culting, make it easier to spot drivers where an extra reference is needed, and reduce the risk of further memory leaks.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.15 ≤ v < 6.18.196.15 ≤ v < 6.19.96.15 ≤ v < 7.06.19 ≤ v < 6.19.96.157.0 rc17.0 rc27.0 rc3791c327a6e4e7691d6fc5ad334c215de4dcc9
Vendor states this is fixed in 224a0d284c3caf1951302d1744a714784febed71 (fixed)
Vendor states this is fixed in 3224990fb16a831aabc50b67c74f5d0074ce80dd (fixed)
Vendor states this is fixed in ec9538f9b5cd1db5e8c612aa636b6119b6355c5d (fixed)
Vendor states this is fixed in 6.15 (unaffected)
Vendor states this is fixed in 6.18.19 (unaffected)
Vendor states this is fixed in 6.19.9 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-401

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