247 lines
14 KiB
JSON
247 lines
14 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-68822",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-12-24T10:30:51.048Z",
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"datePublished": "2026-01-13T15:29:24.703Z",
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"dateUpdated": "2026-10-30T12:23:21.175Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-30T12:23:21.175Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: alps - fix use-after-free bugs caused by dev3_register_work\n\nThe dev3_register_work delayed work item is initialized within\nalps_reconnect() and scheduled upon receipt of the first bare\nPS/2 packet from an external PS/2 device connected to the ALPS\ntouchpad. During device detachment, the original implementation\ncalls flush_workqueue() in psmouse_disconnect() to ensure\ncompletion of dev3_register_work. However, the flush_workqueue()\nin psmouse_disconnect() only blocks and waits for work items that\nwere already queued to the workqueue prior to its invocation. Any\nwork items submitted after flush_workqueue() is called are not\nincluded in the set of tasks that the flush operation awaits.\nThis means that after flush_workqueue() has finished executing,\nthe dev3_register_work could still be scheduled. Although the\npsmouse state is set to PSMOUSE_CMD_MODE in psmouse_disconnect(),\nthe scheduling of dev3_register_work remains unaffected.\n\nThe race condition can occur as follows:\n\nCPU 0 (cleanup path) | CPU 1 (delayed work)\npsmouse_disconnect() |\n psmouse_set_state() |\n flush_workqueue() | alps_report_bare_ps2_packet()\n alps_disconnect() | psmouse_queue_work()\n kfree(priv); // FREE | alps_register_bare_ps2_mouse()\n | priv = container_of(work...); // USE\n | priv->dev3 // USE\n\nAdd disable_delayed_work_sync() in alps_disconnect() to ensure\nthat dev3_register_work is properly canceled and prevented from\nexecuting after the alps_data structure has been deallocated.\n\nThis bug is identified by static analysis."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The SERIO_8042 byte stream is locally reachable through the userio serio-emulation device, leading through serio_interrupt(), ps2_interrupt(), and alps_process_byte() to the vulnerable path. In a reasonable deployment granting an input-testing account access to /dev/userio, direct physical access is unnecessary.\nAC:L - The attacker can provoke reconnect failure and concurrently inject the first bare PS/2 packet during disconnect, controlling both sides of the race and allowing repeated attempts. No condition inherently outside the attacker's control is required.\nPR:L - The userio command path contains no capability check; a basic local account with device-file access can emulate a SERIO_8042 ALPS device, inject packets, and provoke teardown. Init-namespace root is not intrinsically required.\nUI:N - The attacker can drive device emulation, reconnect failure, packet delivery, and the resulting race without any victim action.\nS:U - The vulnerable worker and resulting corruption execute within the host kernel's existing security authority; ordinary kernel privilege escalation does not cross a separate security scope.\nC:H - The worker dereferences attacker-reclaimable alps_data, psmouse, and serio objects after free. Reclaiming the embedded pending work object can provide controlled kernel-pointer dereferences and ultimately arbitrary kernel-memory disclosure.\nI:H - The stale worker writes an input-device pointer and physical-path string into freed memory, while the embedded work_struct and its function pointer are themselves reclaimable. This supports heap corruption, arbitrary writes, and control-flow hijacking.\nA:H - Executing a delayed work item from freed storage can immediately cause invalid pointer dereferences, corrupted workqueue state, an oops, or a kernel panic, and the trigger can be retried."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/input/mouse/alps.c"
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],
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"versions": [
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{
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"version": "04aae283ba6a8cd4851d937bf9c6d6ef0361d794",
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"lessThan": "55beb00222af2eee967322670a0c8f3c6426becb",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "04aae283ba6a8cd4851d937bf9c6d6ef0361d794",
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"lessThan": "b9d8cfd6d77f5072a4df10646810d128220457fb",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "04aae283ba6a8cd4851d937bf9c6d6ef0361d794",
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"lessThan": "ed8c61b89be0c45f029228b2913d5cf7b5cda1a7",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "04aae283ba6a8cd4851d937bf9c6d6ef0361d794",
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"lessThan": "a9c115e017b2c633d25bdfe6709dda6fc36f08c2",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "04aae283ba6a8cd4851d937bf9c6d6ef0361d794",
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"lessThan": "bf40644ef8c8a288742fa45580897ed0e0289474",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/input/mouse/alps.c"
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],
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"versions": [
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{
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"version": "4.0",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "4.0",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.191",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.160",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.64",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.3",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.19",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.0",
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"versionEndExcluding": "6.1.191"
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},
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "6.18.3"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.0",
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"versionEndExcluding": "6.19"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/55beb00222af2eee967322670a0c8f3c6426becb"
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},
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{
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"url": "https://git.kernel.org/stable/c/b9d8cfd6d77f5072a4df10646810d128220457fb"
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},
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{
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"url": "https://git.kernel.org/stable/c/ed8c61b89be0c45f029228b2913d5cf7b5cda1a7"
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},
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{
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"url": "https://git.kernel.org/stable/c/a9c115e017b2c633d25bdfe6709dda6fc36f08c2"
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},
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{
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"url": "https://git.kernel.org/stable/c/bf40644ef8c8a288742fa45580897ed0e0289474"
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}
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],
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"title": "Input: alps - fix use-after-free bugs caused by dev3_register_work",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2025-68822",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:05:36.678846Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-416",
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"description": "CWE-416 Use After Free"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-19T18:15:10.477Z"
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}
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}
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]
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}
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} |