net: mctp: fix device leak on probe failure

Summary

CVECVE-2026-43375
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-08 15:16:48 UTC
Updated2026-05-08 15:16:48 UTC
DescriptionIn 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.

Risk And Classification

EPSS: 0.000170000 probability, percentile 0.041290000 (date 2026-05-11)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 0791c0327a6e4e7691d6fc5ad334c215de04dcc9 3224990fb16a831aabc50b67c74f5d0074ce80dd git Not specified
CNA Linux Linux affected 0791c0327a6e4e7691d6fc5ad334c215de04dcc9 ec9538f9b5cd1db5e8c612aa636b6119b6355c5d git Not specified
CNA Linux Linux affected 0791c0327a6e4e7691d6fc5ad334c215de04dcc9 224a0d284c3caf1951302d1744a714784febed71 git Not specified
CNA Linux Linux affected 6.15 Not specified
CNA Linux Linux unaffected 6.15 semver Not specified
CNA Linux Linux unaffected 6.18.19 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.9 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/ec9538f9b5cd1db5e8c612aa636b6119b6355c5d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3224990fb16a831aabc50b67c74f5d0074ce80dd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/224a0d284c3caf1951302d1744a714784febed71 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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