{"id":"CVE-2026-98018","state":"PUBLISHED","title":"net: mctp: i3c: serialize probe with bus removal","description":"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 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().","publishedAt":"2026-09-25T10:23:39.706Z","updatedAt":"2026-10-19T09:12:23.555Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c8755b29b58ec65be17bcb8c40763d2dcb1f1db5","status":"affected","lessThan":"e6541b2747682fdb2c6ded4a7cf7c39c4067a35c","versionType":"git"},{"version":"c8755b29b58ec65be17bcb8c40763d2dcb1f1db5","status":"affected","lessThan":"765c5e357e67916a7aac8ead4ac2fa7d2bffe000","versionType":"git"},{"version":"c8755b29b58ec65be17bcb8c40763d2dcb1f1db5","status":"affected","lessThan":"906d8dbafabfa81a30e3ade420cb9912f223a5e1","versionType":"git"},{"version":"c8755b29b58ec65be17bcb8c40763d2dcb1f1db5","status":"affected","lessThan":"2b4707a149a55e8fa75c9ef32b359d60f470a566","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/mctp/mctp-i3c.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.7","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/mctp/mctp-i3c.c"]}],"references":["https://git.kernel.org/stable/c/e6541b2747682fdb2c6ded4a7cf7c39c4067a35c","https://git.kernel.org/stable/c/765c5e357e67916a7aac8ead4ac2fa7d2bffe000","https://git.kernel.org/stable/c/906d8dbafabfa81a30e3ade420cb9912f223a5e1","https://git.kernel.org/stable/c/2b4707a149a55e8fa75c9ef32b359d60f470a566"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98018.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98018","state":"PUBLISHED","datePublished":"2026-09-25T10:23:39.706Z","dateUpdated":"2026-10-19T09:12:23.555Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:19:56.069Z"},"containers":{"cna":{"title":"net: mctp: i3c: serialize probe with bus removal","descriptions":[{"lang":"en","value":"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 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()."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c8755b29b58ec65be17bcb8c40763d2dcb1f1db5","status":"affected","lessThan":"e6541b2747682fdb2c6ded4a7cf7c39c4067a35c","versionType":"git"},{"version":"c8755b29b58ec65be17bcb8c40763d2dcb1f1db5","status":"affected","lessThan":"765c5e357e67916a7aac8ead4ac2fa7d2bffe000","versionType":"git"},{"version":"c8755b29b58ec65be17bcb8c40763d2dcb1f1db5","status":"affected","lessThan":"906d8dbafabfa81a30e3ade420cb9912f223a5e1","versionType":"git"},{"version":"c8755b29b58ec65be17bcb8c40763d2dcb1f1db5","status":"affected","lessThan":"2b4707a149a55e8fa75c9ef32b359d60f470a566","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/mctp/mctp-i3c.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.7","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/mctp/mctp-i3c.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/e6541b2747682fdb2c6ded4a7cf7c39c4067a35c"},{"url":"https://git.kernel.org/stable/c/765c5e357e67916a7aac8ead4ac2fa7d2bffe000"},{"url":"https://git.kernel.org/stable/c/906d8dbafabfa81a30e3ade420cb9912f223a5e1"},{"url":"https://git.kernel.org/stable/c/2b4707a149a55e8fa75c9ef32b359d60f470a566"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:12:23.555Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"7.2.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}