{"schema":"threatline.record/2","record":{"id":"CVE-2026-97919","aliases":[],"summary":"tracing: Take the reference before publishing the named histogram trigger","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Take the reference before publishing the named histogram trigger\n\nevent_hist_trigger_named_init() puts the trigger on the global\nnamed_triggers list and only then takes the reference on the trigger it\nshares its histogram with:\n\n\tdata->ref++;\n\n\tsave_named_trigger(data->named_data->name, data);\n\n\tret = event_hist_trigger_init(data->named_data);\n\tif (ret < 0) {\n\t\tkfree(data->cmd_ops);\n\t\tdata->cmd_ops = &trigger_hist_cmd;\n\t}\n\n\treturn ret;\n\nevent_hist_trigger_init() fails when alloc_hist_pad() cannot allocate, and\nnothing takes the trigger back off the list on the way out.\nevent_hist_trigger_parse() frees it, and the next lookup by name reads the\nfreed object:\n\n BUG: KASAN: slab-use-after-free in find_named_trigger+0xac/0xc0\n Read of size 8 at addr ffff888009346860 by task init/1\n  find_named_trigger+0xac/0xc0\n  hist_register_trigger+0xc1/0xa00\n  event_hist_trigger_parse+0x3146/0x6af0\n  event_trigger_write+0xce/0x160\n Freed by task 67:\n  kfree+0x154/0x420\n  trigger_kthread_fn+0xfd/0x160\n\nDo the reference first and publish once it has succeeded, so that nothing\nwhich can fail runs after the trigger becomes findable.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97919","source_modified_at":"2026-10-21T12:53:38.904Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"ac7ab38c271ba2edaeb0dc35b200ec13339776ae","lessThan":"e5c5dad169fb569161d3eed6c3f6a59e65db1830","status":"affected","versionType":"git"},{"version":"e53a8dcd36b9ebc9229450eb594ae20e0b2ae0fd","lessThan":"b6fb2f5370a9a6aec325ab2db1ca3d1a881499b8","status":"affected","versionType":"git"},{"version":"7ab0fc61ce73040f89b12d76a8279995ec283541","lessThan":"2ffaade3611bd9501bc0b9d5d19fc75bfee7a16b","status":"affected","versionType":"git"},{"version":"7ab0fc61ce73040f89b12d76a8279995ec283541","lessThan":"91c15cdda6033e2439f5975b938754152f3d6e38","status":"affected","versionType":"git"},{"version":"7ab0fc61ce73040f89b12d76a8279995ec283541","lessThan":"0fe23b8eaba0d3372c66b7b31204408da0715edc","status":"affected","versionType":"git"},{"version":"740dab2338f70d93aa8235db5a9541d846d7b21c","status":"affected","versionType":"git"},{"version":"6.6.94","lessThan":"6.6.160","status":"affected","versionType":"semver"},{"version":"6.12.34","lessThan":"6.12.112","status":"affected","versionType":"semver"},{"version":"6.15.3","lessThan":"6.16","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97919","source_modified_at":"2026-10-21T12:53:38.904Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.16","status":"affected"},{"version":"0","lessThan":"6.16","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.7","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97919","source_modified_at":"2026-10-21T12:53:38.904Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"2ffaade3611bd9501bc0b9d5d19fc75bfee7a16b","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97919","source_modified_at":"2026-10-21T12:53:38.904Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"91c15cdda6033e2439f5975b938754152f3d6e38","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97919","source_modified_at":"2026-10-21T12:53:38.904Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"0fe23b8eaba0d3372c66b7b31204408da0715edc","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97919","source_modified_at":"2026-10-21T12:53:38.904Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6.6.160","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97919","source_modified_at":"2026-10-21T12:53:38.904Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6.12.112","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97919","source_modified_at":"2026-10-21T12:53:38.904Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6.16","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.002,"percentile":0.09327,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:22:39.829Z","modified_at":"2026-10-21T12:53:38.904Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-97919","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:53:38.904Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-97919","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/e5c5dad169fb569161d3eed6c3f6a59e65db1830"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/b6fb2f5370a9a6aec325ab2db1ca3d1a881499b8"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/2ffaade3611bd9501bc0b9d5d19fc75bfee7a16b"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/91c15cdda6033e2439f5975b938754152f3d6e38"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/0fe23b8eaba0d3372c66b7b31204408da0715edc"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-21T12:53:38.904Z","content_hash":"265c86564f1bb5b77e18057de3eb0a7aefaefba8758cf39cc50a107559e35789"}}