{"id":"CVE-2026-68177","summary":"tracing: Delay module ref count for \"enable_event\" trigger","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Delay module ref count for \"enable_event\" trigger\n\nTriggers are now delayed from freeing, but can still be triggered until\nafter the RCU grace period has ended. The freeing of the enable_event data\nis put into the private_data_free() callback, but the put of the module\nrefcount is done immediately.\n\nIt is possible that if a module is removed that has an event that would\nenable (or disable) it is still active, it can read the data of the module\nafter it is removed causing a use-after-free bug.\n\nMove the trace_event_put_ref() that releases the module into the delayed\ncallback so that the module can not be removed until any reference to its\nevents are finished.","modified":"2026-08-18T03:31:03.534760021Z","published":"2026-08-10T11:59:48.318Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68177.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/159fdc3e01dca5fdbc412fcd8b239895733a270d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e091351b38818ef620d27f44f4bfd625f13afbff"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68177.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68177"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"61d445af0a7c70018111919e47beaaee15653f2f"},{"fixed":"159fdc3e01dca5fdbc412fcd8b239895733a270d"},{"fixed":"e091351b38818ef620d27f44f4bfd625f13afbff"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68177.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68177.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}