{"id":"CVE-2026-98018","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mctp: i3c: serialize probe with bus removal\n\nmctp_i3c_probe() drops busdevs_lock after finding the matching bus","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mctp: i3c: serialize probe with bus removal\n\nmctp_i3c_probe() drops busdevs_lock after finding the matching bus. A\nconcurrent I3C_NOTIFY_BUS_REMOVE can then unregi…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= c8755b29b58ec65be17bcb8c40763d2dcb1f1db5 < e6541b2747682fdb2c6ded4a7cf7c39c4067a35c","Linux >= c8755b29b58ec65be17bcb8c40763d2dcb1f1db5 < 765c5e357e67916a7aac8ead4ac2fa7d2bffe000","Linux >= c8755b29b58ec65be17bcb8c40763d2dcb1f1db5 < 906d8dbafabfa81a30e3ade420cb9912f223a5e1","Linux >= c8755b29b58ec65be17bcb8c40763d2dcb1f1db5 < 2b4707a149a55e8fa75c9ef32b359d60f470a566","Linux 6.7"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T11:17:30.257","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98018","references":[{"url":"https://git.kernel.org/stable/c/2b4707a149a55e8fa75c9ef32b359d60f470a566","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/765c5e357e67916a7aac8ead4ac2fa7d2bffe000","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/906d8dbafabfa81a30e3ade420cb9912f223a5e1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e6541b2747682fdb2c6ded4a7cf7c39c4067a35c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98018.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98018"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541039"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98018"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98018"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98018.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-09-25T11:06:38.856Z","epss":0.00168,"epssPercentile":0.05982,"cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-825"],"slug":"CVE-2026-98018","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: mctp: i3c: serialize probe with bus removal\n\nmctp_i3c_probe() drops busdevs_lock after finding the matching bus. A\nconcurrent I3C_NOTIFY_BUS_REMOVE can then unregister and free the bus\nnetdev before probe passes its private data to mctp_i3c_add_device().\nThe latter consequently adds a list node through a freed mbus pointer.\n\nKeep busdevs_lock held until the device has been added. This also\nsatisfies the __must_hold annotation on mctp_i3c_add_device().\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-09-28 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98018.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":212478,"id":"CVE-2026-98018","ts":1790668186322,"field":"cvss","old":null,"new":"5.5"},{"seq":212477,"id":"CVE-2026-98018","ts":1790668186322,"field":"severity","old":"none","new":"medium"}]}