{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-99050", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.388Z", "datePublished": "2026-10-23T12:22:29.204Z", "dateUpdated": "2026-10-23T12:22:29.204Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-23T12:22:29.204Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: mpsse: fix race when arming the IRQ poll worker\n\ngpio_mpsse_irq_enable() arms the poll worker before publishing it:\nschedule_work() runs before the worker is added to priv->workers. If\ngpio_mpsse_disconnect() walks the list in that window it misses the\nworker, and once disconnect returns, the USB core frees mpsse_priv\nwhile the orphaned gpio_mpsse_poll() work keeps accessing it, causing\na use-after-free.\n\nFix this by publishing and arming the worker in one irq_spin\ncritical section. Teardown walks the same list under irq_spin, so a\nworker found on the list is guaranteed to be armed, and\ncancel_work_sync() handles it whether it is queued or running.\n\nA worker armed after the disconnect walk would still be missed, so\nalso set a new priv->dying flag under irq_spin before the teardown\nwalk, and check it in the same critical section, freeing it via\nkfree_rcu() instead when the device is going away, since kfree()\nwould be called with the IRQ core's raw spinlock held and may sleep\non PREEMPT_RT. schedule_work() is safe to call with irq_spin held,\nand the next probe gets a fresh mpsse_priv, so the flag never needs\nto be cleared.\n\nThis issue was found by an in-house static analysis tool."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpio/gpio-mpsse.c"], "versions": [{"version": "472d900c8bcac301ae0e40fdca7db799bd989ff5", "lessThan": "76390ac0bca7e5058b7482eb4d951c3bda5df812", "status": "affected", "versionType": "git"}, {"version": "179ef1127d7a4f09f0e741fa9f30b8a8e7886271", "lessThan": "c0071ee496e1228976c72b096f529503222708a0", "status": "affected", "versionType": "git"}, {"version": "179ef1127d7a4f09f0e741fa9f30b8a8e7886271", "lessThan": "7efa1a1953cd6b20b23a3524d5b4b81789c6ef25", "status": "affected", "versionType": "git"}, {"version": "6.18.6", "lessThan": "6.18.57", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpio/gpio-mpsse.c"], "versions": [{"version": "6.19", "status": "affected"}, {"version": "0", "lessThan": "6.19", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.57", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.11", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18.6", "versionEndExcluding": "6.18.57"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "7.2.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/76390ac0bca7e5058b7482eb4d951c3bda5df812"}, {"url": "https://git.kernel.org/stable/c/c0071ee496e1228976c72b096f529503222708a0"}, {"url": "https://git.kernel.org/stable/c/7efa1a1953cd6b20b23a3524d5b4b81789c6ef25"}], "title": "gpio: mpsse: fix race when arming the IRQ poll worker", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpio/gpio-mpsse.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "76390ac0bca7e5058b7482eb4d951c3bda5df812", "status": "affected", "version": "472d900c8bcac301ae0e40fdca7db799bd989ff5", "versionType": "git"}, {"lessThan": "c0071ee496e1228976c72b096f529503222708a0", "status": "affected", "version": "179ef1127d7a4f09f0e741fa9f30b8a8e7886271", "versionType": "git"}, {"lessThan": "7efa1a1953cd6b20b23a3524d5b4b81789c6ef25", "status": "affected", "version": "179ef1127d7a4f09f0e741fa9f30b8a8e7886271", "versionType": "git"}, {"lessThan": "6.18.57", "status": "affected", "version": "6.18.6", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpio/gpio-mpsse.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.19"}, {"lessThan": "6.19", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.57", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.11", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: mpsse: fix race when arming the IRQ poll worker\n\ngpio_mpsse_irq_enable() arms the poll worker before publishing it:\nschedule_work() runs before the worker is added to priv->workers. If\ngpio_mpsse_disconnect() walks the list in that window it misses the\nworker, and once disconnect returns, the USB core frees mpsse_priv\nwhile the orphaned gpio_mpsse_poll() work keeps accessing it, causing\na use-after-free.\n\nFix this by publishing and arming the worker in one irq_spin\ncritical section. Teardown walks the same list under irq_spin, so a\nworker found on the list is guaranteed to be armed, and\ncancel_work_sync() handles it whether it is queued or running.\n\nA worker armed after the disconnect walk would still be missed, so\nalso set a new priv->dying flag under irq_spin before the teardown\nwalk, and check it in the same critical section, freeing it via\nkfree_rcu() instead when the device is going away, since kfree()\nwould be called with the IRQ core's raw spinlock held and may sleep\non PREEMPT_RT. schedule_work() is safe to call with irq_spin held,\nand the next probe gets a fresh mpsse_priv, so the flag never needs\nto be cleared.\n\nThis issue was found by an in-house static analysis tool."}], "id": "CVE-2026-99050", "lastModified": "2026-10-23T13:17:28.513", "metrics": {}, "published": "2026-10-23T13:17:28.513", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/76390ac0bca7e5058b7482eb4d951c3bda5df812"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7efa1a1953cd6b20b23a3524d5b4b81789c6ef25"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c0071ee496e1228976c72b096f529503222708a0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

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