{"id":"CVE-2026-98656","title":"iio: trigger: cancel reenable_work before freeing trigger","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: trigger: cancel reenable_work before freeing trigger\n\niio_trigger_notify_done_atomic() defers ->reenable() into\ntrig->reenable_work on the system workqueue, and th…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 9020ef659885f2622cfb386cc229b6d618362895 < cf513df1a2c75566cdc802d9da47f62e8d6cfd18","Linux >= 9020ef659885f2622cfb386cc229b6d618362895 < e64703280ce7a23a43c27efebeb7da457c88bf5c","Linux >= 9020ef659885f2622cfb386cc229b6d618362895 < 882d0011c59ff8ac15188ec9ce071399ecfa10ad","Linux >= 9020ef659885f2622cfb386cc229b6d618362895 < 2a57b9246cecd5dd797a42eb310d6c8816f26d9e","Linux a18aeac73c0f692ba40964f5f56e182312ae843b","Linux 2c5c948451d57596640b20887b06b523d376eb24","Linux >= 5.15.17 < 5.16","Linux >= 5.16.3 < 5.17","Linux 5.17"],"published":"2026-10-18","updated":"2026-10-18","sourceUpdated":"2026-10-18T15:44:07.883Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98656","references":[{"url":"https://git.kernel.org/stable/c/cf513df1a2c75566cdc802d9da47f62e8d6cfd18"},{"url":"https://git.kernel.org/stable/c/e64703280ce7a23a43c27efebeb7da457c88bf5c"},{"url":"https://git.kernel.org/stable/c/882d0011c59ff8ac15188ec9ce071399ecfa10ad"},{"url":"https://git.kernel.org/stable/c/2a57b9246cecd5dd797a42eb310d6c8816f26d9e"}],"tags":["cve.org"],"ingestedAt":"2026-10-18T16:47:32.537Z","slug":"CVE-2026-98656","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\niio: trigger: cancel reenable_work before freeing trigger\n\niio_trigger_notify_done_atomic() defers ->reenable() into\ntrig->reenable_work on the system workqueue, and the worker dereferences\nthe owning trigger through container_of().  Nothing cancels this work\nbefore iio_trig_release() frees the trigger, so a worker armed by the\nlast in-flight IRQ can outlive the free and touch freed memory.\n\nCancel it at the top of iio_trig_release(), which every free path\nreaches through the device core's final put_device().\n\nFound by an in-house static analysis tool.\n\n## Affected\n\n- `Linux >= 9020ef659885f2622cfb386cc229b6d618362895 < cf513df1a2c75566cdc802d9da47f62e8d6cfd18`\n- `Linux >= 9020ef659885f2622cfb386cc229b6d618362895 < e64703280ce7a23a43c27efebeb7da457c88bf5c`\n- `Linux >= 9020ef659885f2622cfb386cc229b6d618362895 < 882d0011c59ff8ac15188ec9ce071399ecfa10ad`\n- `Linux >= 9020ef659885f2622cfb386cc229b6d618362895 < 2a57b9246cecd5dd797a42eb310d6c8816f26d9e`\n- `Linux a18aeac73c0f692ba40964f5f56e182312ae843b`\n- `Linux 2c5c948451d57596640b20887b06b523d376eb24`\n- `Linux >= 5.15.17 < 5.16`\n- `Linux >= 5.16.3 < 5.17`\n- `Linux 5.17`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}