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CVE-2026-43375net: mctp: fix device leak on probe failure

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.

Timeline

  1. ID reserved

    By Linux

  2. · 7 days later

    Published

  3. · 3 days later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-43375, by who scored it
Scored byCVSSScoreVector
NVDNVD · Analyzed3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.12% · top 98% of all CVEs (12 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Affected products

  • Linux · Linux

    • affected 0791c0327a6e4e7691d6fc5ad334c215de04dcc9 – < 3224990fb16a831aabc50b67c74f5d0074ce80dd
    • affected 0791c0327a6e4e7691d6fc5ad334c215de04dcc9 – < ec9538f9b5cd1db5e8c612aa636b6119b6355c5d
    • affected 0791c0327a6e4e7691d6fc5ad334c215de04dcc9 – < 224a0d284c3caf1951302d1744a714784febed71

  • Linux · Linux

    • affected 6.15
    • unaffected < 6.15
    • unaffected 6.18.19 – ≤ 6.18.*
    • unaffected 6.19.9 – ≤ 6.19.*
    • unaffected 7.0 – ≤ *

References

References3

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .