CVE-2026-98018

high

Description

In the Linux kernel, the following vulnerability has been resolved: net: mctp: i3c: serialize probe with bus removal mctp_i3c_probe() drops busdevs_lock after finding the matching bus. A concurrent I3C_NOTIFY_BUS_REMOVE can then unregister and free the bus netdev before probe passes its private data to mctp_i3c_add_device(). The latter consequently adds a list node through a freed mbus pointer. Keep busdevs_lock held until the device has been added. This also satisfies the __must_hold annotation on mctp_i3c_add_device().

References

https://git.kernel.org/stable/c/e6541b2747682fdb2c6ded4a7cf7c39c4067a35c

https://git.kernel.org/stable/c/906d8dbafabfa81a30e3ade420cb9912f223a5e1

https://git.kernel.org/stable/c/765c5e357e67916a7aac8ead4ac2fa7d2bffe000

https://git.kernel.org/stable/c/2b4707a149a55e8fa75c9ef32b359d60f470a566

Details

Source: Mitre, NVD

Published: 2026-09-25

Updated: 2026-09-25

Risk Information

CVSS v2

Base Score: 5.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

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

Severity: High

EPSS

EPSS: 0.00168