{"id":"CVE-2026-98656","state":"PUBLISHED","title":"iio: trigger: cancel reenable_work before freeing trigger","description":"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 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.","publishedAt":"2026-10-18T15:44:07.883Z","updatedAt":"2026-10-30T12:38:28.155Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a18aeac73c0f692ba40964f5f56e182312ae843b","status":"affected","lessThan":"beec4c9e23b8293c41d3448f9807c28fc9a599d4","versionType":"git"},{"version":"9020ef659885f2622cfb386cc229b6d618362895","status":"affected","lessThan":"4e790a5bd4249877bcf0c94db12ac490965f9296","versionType":"git"},{"version":"9020ef659885f2622cfb386cc229b6d618362895","status":"affected","lessThan":"ac5d26a46c90ff61fd574eff4e8f0d71c905828a","versionType":"git"},{"version":"9020ef659885f2622cfb386cc229b6d618362895","status":"affected","lessThan":"cf513df1a2c75566cdc802d9da47f62e8d6cfd18","versionType":"git"},{"version":"9020ef659885f2622cfb386cc229b6d618362895","status":"affected","lessThan":"e64703280ce7a23a43c27efebeb7da457c88bf5c","versionType":"git"},{"version":"9020ef659885f2622cfb386cc229b6d618362895","status":"affected","lessThan":"882d0011c59ff8ac15188ec9ce071399ecfa10ad","versionType":"git"},{"version":"9020ef659885f2622cfb386cc229b6d618362895","status":"affected","lessThan":"2a57b9246cecd5dd797a42eb310d6c8816f26d9e","versionType":"git"},{"version":"2c5c948451d57596640b20887b06b523d376eb24","status":"affected","versionType":"git"},{"version":"5.15.17","status":"affected","lessThan":"5.15.224","versionType":"semver"},{"version":"5.16.3","status":"affected","lessThan":"5.17","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/industrialio-trigger.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.17","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","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/iio/industrialio-trigger.c"]}],"references":["https://git.kernel.org/stable/c/beec4c9e23b8293c41d3448f9807c28fc9a599d4","https://git.kernel.org/stable/c/4e790a5bd4249877bcf0c94db12ac490965f9296","https://git.kernel.org/stable/c/ac5d26a46c90ff61fd574eff4e8f0d71c905828a","https://git.kernel.org/stable/c/cf513df1a2c75566cdc802d9da47f62e8d6cfd18","https://git.kernel.org/stable/c/e64703280ce7a23a43c27efebeb7da457c88bf5c","https://git.kernel.org/stable/c/882d0011c59ff8ac15188ec9ce071399ecfa10ad","https://git.kernel.org/stable/c/2a57b9246cecd5dd797a42eb310d6c8816f26d9e"],"weaknesses":[],"ingestedAt":"2026-10-30T12:58:04.520Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98656.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98656","state":"PUBLISHED","datePublished":"2026-10-18T15:44:07.883Z","dateUpdated":"2026-10-30T12:38:28.155Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.362Z"},"containers":{"cna":{"title":"iio: trigger: cancel reenable_work before freeing trigger","descriptions":[{"lang":"en","value":"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 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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a18aeac73c0f692ba40964f5f56e182312ae843b","status":"affected","lessThan":"beec4c9e23b8293c41d3448f9807c28fc9a599d4","versionType":"git"},{"version":"9020ef659885f2622cfb386cc229b6d618362895","status":"affected","lessThan":"4e790a5bd4249877bcf0c94db12ac490965f9296","versionType":"git"},{"version":"9020ef659885f2622cfb386cc229b6d618362895","status":"affected","lessThan":"ac5d26a46c90ff61fd574eff4e8f0d71c905828a","versionType":"git"},{"version":"9020ef659885f2622cfb386cc229b6d618362895","status":"affected","lessThan":"cf513df1a2c75566cdc802d9da47f62e8d6cfd18","versionType":"git"},{"version":"9020ef659885f2622cfb386cc229b6d618362895","status":"affected","lessThan":"e64703280ce7a23a43c27efebeb7da457c88bf5c","versionType":"git"},{"version":"9020ef659885f2622cfb386cc229b6d618362895","status":"affected","lessThan":"882d0011c59ff8ac15188ec9ce071399ecfa10ad","versionType":"git"},{"version":"9020ef659885f2622cfb386cc229b6d618362895","status":"affected","lessThan":"2a57b9246cecd5dd797a42eb310d6c8816f26d9e","versionType":"git"},{"version":"2c5c948451d57596640b20887b06b523d376eb24","status":"affected","versionType":"git"},{"version":"5.15.17","status":"affected","lessThan":"5.15.224","versionType":"semver"},{"version":"5.16.3","status":"affected","lessThan":"5.17","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/industrialio-trigger.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.17","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","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/iio/industrialio-trigger.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/beec4c9e23b8293c41d3448f9807c28fc9a599d4"},{"url":"https://git.kernel.org/stable/c/4e790a5bd4249877bcf0c94db12ac490965f9296"},{"url":"https://git.kernel.org/stable/c/ac5d26a46c90ff61fd574eff4e8f0d71c905828a"},{"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:38:28.155Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.17","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"7.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}