{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80559", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.767Z", "datePublished": "2026-08-26T14:37:25.371Z", "dateUpdated": "2026-08-27T05:01:47.768Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-27T05:01:47.768Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: sur40 - fix input device registration ordering\n\nIn sur40_probe(), input_register_device() was previously called early before\nthe V4L2 video device and vb2_queue components were fully initialized. If\nuserspace opened the input device immediately upon registration, sur40_open()\nwould trigger and start the sur40_poll() worker thread. This worker thread\ninvokes sur40_process_video() and accesses the uninitialized vb2_queue\nstructure, leading to a data race and potential system crash.\n\nFurthermore, if V4L2 or video registration failed after input_register_device()\nsucceeded, the error path fell through to calling input_free_device() on a\nsuccessfully registered device instead of input_unregister_device(), corrupting\ninput core state.\n\nMove input_register_device() to the very end of sur40_probe(). This ensures\nthe V4L2 and video queue structures are fully initialized before polling can\nstart, and naturally resolves the error path bug since input_free_device()\nis now only called when input registration has not yet occurred.\n\nTo maintain strict LIFO (Last-In, First-Out) teardown ordering, also move\ninput_unregister_device() to the very beginning of sur40_disconnect(). This\nguarantees that the input polling worker thread is stopped before V4L2\nvideo components or control handlers are unregistered."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - Exploitation is via open() on /dev/input/eventX (evdev -> input_open_device -> sur40_open -> sur40_poll -> sur40_process_video) racing sur40_probe() before vb2_queue_init(); on permanently installed PixelSense/SUR40 kiosk tables no physical USB access is needed at attack time.\nAC:L - The attacker controls both sides of the race by monitoring udev/inotify for the new input node and immediately opening it during USB hotplug or reboot probe; polling starts synchronously in input_dev_poller_start, making the uninitialized vb2_queue access reliably triggerable without uncontrollable kernel preconditions.\nPR:L - Triggering sur40_open requires only local userspace access to the evdev node (typically membership in the input group or equivalent kiosk-app privileges opening /dev/input/event*), not real root in the init namespace; user namespaces cannot substitute for this device access.\nUI:N - No victim interaction is required beyond the attacker's own actions; they can open the input device themselves (or rely on an auto-opening compositor during reconnect) and time the race during probe without needing another user to touch the screen or perform any action.\nS:U - Impact is confined to kernel memory corruption and crashes within the host input/USB driver context on the same system; it does not cross VM, container, or IOMMU security boundaries despite potential local privilege escalation as a follow-on.\nC:H - Concurrent access to a partially initialized vb2_queue is a kernel data race that can read uninitialized queue state, and the probe error path calls input_free_device() on a registered device, corrupting input-core linked lists\u2014both are memory-corruption primitives leverageable for kernel information disclosure.\nI:H - The input_free_device() misuse corrupts global input-core list state (definite kernel structure corruption), and racing poll against vb2_queue_init can invoke vb2_buffer_done and list operations on uninitialized queue internals, enabling exploitable heap/control-structure writes.\nA:H - The fix commit explicitly cites a data race on the uninitialized vb2_queue leading to system crash; corrupting input-core registration state or racing teardown during USB disconnect can cause kernel oops/panic and deny service on interactive SUR40/PixelSense deployments."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/input/touchscreen/sur40.c"], "versions": [{"version": "e831cd251fb91d6c25352d322743db0d17ea11dd", "lessThan": "cd4ecce2fd87760c0ad9a9d28c9fc62ea1dbfd3d", "status": "affected", "versionType": "git"}, {"version": "e831cd251fb91d6c25352d322743db0d17ea11dd", "lessThan": "dab741c9da72102a37cc1020a929051b7c45f9fb", "status": "affected", "versionType": "git"}, {"version": "e831cd251fb91d6c25352d322743db0d17ea11dd", "lessThan": "764b507be7b51787e1f577ca3bf0bab7efe81ff8", "status": "affected", "versionType": "git"}, {"version": "e831cd251fb91d6c25352d322743db0d17ea11dd", "lessThan": "3e8ed76a4f3572e637653f0654cccdf617903231", "status": "affected", "versionType": "git"}, {"version": "e831cd251fb91d6c25352d322743db0d17ea11dd", "lessThan": "83aa12f9f2468a4fbef027c09224dc1011850fb0", "status": "affected", "versionType": "git"}, {"version": "e831cd251fb91d6c25352d322743db0d17ea11dd", "lessThan": "5c1c5227c93f18cd329dd754b4df5e0e2daece1e", "status": "affected", "versionType": "git"}, {"version": "e831cd251fb91d6c25352d322743db0d17ea11dd", "lessThan": "beb9b0bd6e6e23f5e9e42b7ef890a50f57f1f3aa", "status": "affected", "versionType": "git"}, {"version": "e831cd251fb91d6c25352d322743db0d17ea11dd", "lessThan": "9da976eb649c9e2f588a4499410e4d8af687925f", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/input/touchscreen/sur40.c"], "versions": [{"version": "4.1", "status": "affected"}, {"version": "0", "lessThan": "4.1", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.266", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.217", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.184", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.153", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.105", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.46", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.10", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "4.1", "versionEndExcluding": "5.10.266"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1", "versionEndExcluding": "5.15.217"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1", "versionEndExcluding": "6.1.184"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1", "versionEndExcluding": "6.6.153"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1", "versionEndExcluding": "6.12.105"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1", "versionEndExcluding": "6.18.46"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1", "versionEndExcluding": "7.1.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/cd4ecce2fd87760c0ad9a9d28c9fc62ea1dbfd3d"}, {"url": "https://git.kernel.org/stable/c/dab741c9da72102a37cc1020a929051b7c45f9fb"}, {"url": "https://git.kernel.org/stable/c/764b507be7b51787e1f577ca3bf0bab7efe81ff8"}, {"url": "https://git.kernel.org/stable/c/3e8ed76a4f3572e637653f0654cccdf617903231"}, {"url": "https://git.kernel.org/stable/c/83aa12f9f2468a4fbef027c09224dc1011850fb0"}, {"url": "https://git.kernel.org/stable/c/5c1c5227c93f18cd329dd754b4df5e0e2daece1e"}, {"url": "https://git.kernel.org/stable/c/beb9b0bd6e6e23f5e9e42b7ef890a50f57f1f3aa"}, {"url": "https://git.kernel.org/stable/c/9da976eb649c9e2f588a4499410e4d8af687925f"}], "title": "Input: sur40 - fix input device registration ordering", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/input/touchscreen/sur40.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "cd4ecce2fd87760c0ad9a9d28c9fc62ea1dbfd3d", "status": "affected", "version": "e831cd251fb91d6c25352d322743db0d17ea11dd", "versionType": "git"}, {"lessThan": "dab741c9da72102a37cc1020a929051b7c45f9fb", "status": "affected", "version": "e831cd251fb91d6c25352d322743db0d17ea11dd", "versionType": "git"}, {"lessThan": "764b507be7b51787e1f577ca3bf0bab7efe81ff8", "status": "affected", "version": "e831cd251fb91d6c25352d322743db0d17ea11dd", "versionType": "git"}, {"lessThan": "3e8ed76a4f3572e637653f0654cccdf617903231", "status": "affected", "version": "e831cd251fb91d6c25352d322743db0d17ea11dd", "versionType": "git"}, {"lessThan": "83aa12f9f2468a4fbef027c09224dc1011850fb0", "status": "affected", "version": "e831cd251fb91d6c25352d322743db0d17ea11dd", "versionType": "git"}, {"lessThan": "5c1c5227c93f18cd329dd754b4df5e0e2daece1e", "status": "affected", "version": "e831cd251fb91d6c25352d322743db0d17ea11dd", "versionType": "git"}, {"lessThan": "beb9b0bd6e6e23f5e9e42b7ef890a50f57f1f3aa", "status": "affected", "version": "e831cd251fb91d6c25352d322743db0d17ea11dd", "versionType": "git"}, {"lessThan": "9da976eb649c9e2f588a4499410e4d8af687925f", "status": "affected", "version": "e831cd251fb91d6c25352d322743db0d17ea11dd", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/input/touchscreen/sur40.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.1"}, {"lessThan": "4.1", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.266", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.217", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.184", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.153", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.105", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.46", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.10", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "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\nInput: sur40 - fix input device registration ordering\n\nIn sur40_probe(), input_register_device() was previously called early before\nthe V4L2 video device and vb2_queue components were fully initialized. If\nuserspace opened the input device immediately upon registration, sur40_open()\nwould trigger and start the sur40_poll() worker thread. This worker thread\ninvokes sur40_process_video() and accesses the uninitialized vb2_queue\nstructure, leading to a data race and potential system crash.\n\nFurthermore, if V4L2 or video registration failed after input_register_device()\nsucceeded, the error path fell through to calling input_free_device() on a\nsuccessfully registered device instead of input_unregister_device(), corrupting\ninput core state.\n\nMove input_register_device() to the very end of sur40_probe(). This ensures\nthe V4L2 and video queue structures are fully initialized before polling can\nstart, and naturally resolves the error path bug since input_free_device()\nis now only called when input registration has not yet occurred.\n\nTo maintain strict LIFO (Last-In, First-Out) teardown ordering, also move\ninput_unregister_device() to the very beginning of sur40_disconnect(). This\nguarantees that the input polling worker thread is stopped before V4L2\nvideo components or control handlers are unregistered."}], "id": "CVE-2026-80559", "lastModified": "2026-08-27T06:17:40.253", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-08-26T15:17:10.690", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3e8ed76a4f3572e637653f0654cccdf617903231"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5c1c5227c93f18cd329dd754b4df5e0e2daece1e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/764b507be7b51787e1f577ca3bf0bab7efe81ff8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/83aa12f9f2468a4fbef027c09224dc1011850fb0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9da976eb649c9e2f588a4499410e4d8af687925f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/beb9b0bd6e6e23f5e9e42b7ef890a50f57f1f3aa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cd4ecce2fd87760c0ad9a9d28c9fc62ea1dbfd3d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dab741c9da72102a37cc1020a929051b7c45f9fb"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Input: sur40 - fix input device registration ordering", "id": "2524457", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2524457"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-824", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nInput: sur40 - fix input device registration ordering\nIn sur40_probe(), input_register_device() was previously called early before\nthe V4L2 video device and vb2_queue components were fully initialized. If\nuserspace opened the input device immediately upon registration, sur40_open()\nwould trigger and start the sur40_poll() worker thread. This worker thread\ninvokes sur40_process_video() and accesses the uninitialized vb2_queue\nstructure, leading to a data race and potential system crash.\nFurthermore, if V4L2 or video registration failed after input_register_device()\nsucceeded, the error path fell through to calling input_free_device() on a\nsuccessfully registered device instead of input_unregister_device(), corrupting\ninput core state.\nMove input_register_device() to the very end of sur40_probe(). This ensures\nthe V4L2 and video queue structures are fully initialized before polling can\nstart, and naturally resolves the error path bug since input_free_device()\nis now only called when input registration has not yet occurred.\nTo maintain strict LIFO (Last-In, First-Out) teardown ordering, also move\ninput_unregister_device() to the very beginning of sur40_disconnect(). This\nguarantees that the input polling worker thread is stopped before V4L2\nvideo components or control handlers are unregistered.", "A flaw was found in the Linux kernel's `sur40` input device driver. Due to improper ordering of device registration, a local user could trigger a race condition by opening the input device immediately after its registration. This could lead to the system accessing uninitialized data, resulting in a system crash. Furthermore, incorrect error handling in the driver could corrupt the input core state."], "name": "CVE-2026-80559", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80559\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80559\nhttps://lore.kernel.org/linux-cve-announce/2026082610-CVE-2026-80559-9595@gregkh/T"], "threat_severity": "Moderate"}