205 lines
10 KiB
JSON
205 lines
10 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-2026-64366",
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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": "2026-07-19T15:36:31.783Z",
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"datePublished": "2026-07-25T08:50:20.612Z",
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"dateUpdated": "2026-10-19T20:38:24.864Z"
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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": "2026-08-17T04:54:14.203Z"
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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\nHID: wacom: fix slab-out-of-bounds write in wacom_wac_queue_insert\n\nwacom_wac_queue_insert() calls kfifo_skip() in a loop when the kfifo\ndoesn't have enough space for the incoming report. If the kfifo is\nempty, kfifo_skip() reads stale data left in the kmalloc'd buffer\nvia __kfifo_peek_n() and interprets it as a record length, advancing\nfifo->out by that garbage value. This corrupts the internal kfifo\nstate, causing kfifo_unused() to return a value much larger than the\nactual buffer size, which bypasses __kfifo_in_r()'s guard:\n\n if (len + recsize > kfifo_unused(fifo))\n return 0;\n\nkfifo_copy_in() then performs an out-of-bounds memcpy, writing up to\n3842 bytes past the 256-byte buffer.\n\nAdd a !kfifo_is_empty() condition to the while loop so kfifo_skip()\nis never called on an empty fifo, and check the return value of\nkfifo_in() to reject reports that are too large for the fifo."
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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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 8.8,
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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:A - The Wacom driver accepts Bluetooth HID devices, whose attacker-controlled descriptors and reports reach wacom_raw_event through HIDP or UHID. A malicious peripheral within Bluetooth range can therefore trigger the flaw.\nAC:L - A single oversized crafted report can deterministically corrupt the empty FIFO state and trigger the overwrite. No race or condition outside the attacker's control is required.\nPR:N - A connected malicious Bluetooth peripheral needs no account or kernel capability on the target. The report-processing path contains no privilege or authentication check.\nUI:N - Once the malicious peripheral is connected, it can transmit the triggering report without any concurrent victim action.\nS:U - The corruption occurs inside the host kernel and compromises resources governed by that same security authority; it does not inherently cross a VM or IOMMU boundary.\nC:H - The large attacker-controlled heap overwrite can corrupt adjacent kernel objects and be developed into code-execution or arbitrary-memory-access primitives, exposing kernel and process memory.\nI:H - The report supplies thousands of attacker-controlled bytes beyond a small slab object, enabling corruption of adjacent objects and potential kernel control-flow hijacking.\nA:H - The extensive slab overwrite can immediately cause a kernel oops or panic, and the triggering report can be sent repeatedly."
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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/hid/wacom_sys.c"
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],
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"versions": [
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{
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"version": "5e013ad206895e72d7da41bc1ae89d8cb499c3aa",
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"lessThan": "ca899a926c11a59211b764b0155d9a1cdcc32b81",
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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": "5e013ad206895e72d7da41bc1ae89d8cb499c3aa",
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"lessThan": "57bdd10ad50d68341f500a7b330f0d8949e510ec",
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"status": "affected",
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"lessThan": "6b3014ec0e9a390ca563030b2d7689921f0daef5",
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"status": "affected",
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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/hid/wacom_sys.c"
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],
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"versions": [
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{
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"version": "6.15",
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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": "6.15",
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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": "6.18.39",
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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": "7.1.4",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.15",
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"versionEndExcluding": "6.18.39"
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},
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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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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/ca899a926c11a59211b764b0155d9a1cdcc32b81"
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},
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{
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"url": "https://git.kernel.org/stable/c/57bdd10ad50d68341f500a7b330f0d8949e510ec"
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},
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{
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"url": "https://git.kernel.org/stable/c/6b3014ec0e9a390ca563030b2d7689921f0daef5"
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}
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],
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"title": "HID: wacom: fix slab-out-of-bounds write in wacom_wac_queue_insert",
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"x_generator": {
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"engine": "bippy-1.2.0"
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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-2026-64366",
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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": "2026-10-16T15:39:29.451436Z"
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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-787",
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"description": "CWE-787 Out-of-bounds Write"
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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": "2026-10-19T20:38:24.864Z"
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} |