159 lines
8.6 KiB
JSON
159 lines
8.6 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-2026-64601",
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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": "2026-07-19T15:36:31.799Z",
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"datePublished": "2026-08-06T07:13:53.926Z",
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"dateUpdated": "2026-08-17T04:58:24.207Z"
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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": "2026-08-17T04:58:24.207Z"
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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\nALSA: us144mkii: capture_urb_complete: redundant usb_anchor_urb corrupts anchor list on each resubmission\n\nIn capture_urb_complete(), usb_anchor_urb() is called on every\ncompletion callback, but the URB is already anchored from the\ninitial submission in tascam_trigger_start(). Each redundant call\ncorrupts the anchor's doubly-linked list and inflates the URB\nrefcount. When usb_kill_anchored_urbs() traverses the list during\nstream stop / suspend / disconnect, the corrupted list leads to\nuse-after-free.\n\nRemove the redundant usb_anchor_urb() from the resubmit path."
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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 bug is reached through local ALSA PCM open/ioctl paths on /dev/snd/pcmC*D* (START/STOP via tascam_pcm_trigger), not via network protocols; a present TASCAM US-144/US-144MKII is a deployment prerequisite, and Local is chosen over Physical under the uncertainty rule.\nAC:L - An attacker who can open the PCM device can deterministically start capture (submitting URBs that complete and hit capture_urb_complete), then stop/suspend to invoke usb_kill_anchored_urbs on the corrupted anchor; no conditions outside attacker control are required.\nPR:L - The PCM path has no capability checks; ordinary local access to ALSA device nodes (audio group or seat/udev ACLs on studio/desktop systems with this interface) is sufficient, not init-namespace root.\nUI:N - The attacker alone opens the PCM device, starts and stops the stream, and thereby triggers URB resubmission corruption and the subsequent kill/UAF path without any separate victim action.\nS:U - The use-after-free corrupts kernel USB/ALSA state within the same host kernel security authority and does not cross a VM, IOMMU, or other separate boundary.\nC:H - Corrupted usb_anchor list traversal during usb_kill_anchored_urbs yields a kernel use-after-free; per guidance UAF enables reclaim of freed objects and arbitrary kernel information disclosure.\nI:H - The same UAF on URB/anchor-linked objects can be turned into heap reuse and control-flow hijacking primitives, so integrity impact is High rather than a mere crash.\nA:H - Traversing the corrupted anchor list or under-referenced URB state during stream stop, suspend, or disconnect can oops/panic the kernel, giving High availability impact."
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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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"sound/usb/usx2y/us144mkii_capture.c"
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],
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"versions": [
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{
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"version": "c1bb0c13e430623c26543baae5bb9ae21139db87",
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"lessThan": "16f14f55141d4c55c3f321f93c328fff7cd6860a",
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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": "c1bb0c13e430623c26543baae5bb9ae21139db87",
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"lessThan": "ab1db64912428cdf06a4f9542e16e0575e9ad59f",
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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": "c1bb0c13e430623c26543baae5bb9ae21139db87",
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"lessThan": "5cff1529a2f9b3461a7f5a6e36a86682fc290534",
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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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"sound/usb/usx2y/us144mkii_capture.c"
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],
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"versions": [
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{
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"version": "6.18",
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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": "6.18",
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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": "6.18.39",
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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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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.18",
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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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"versionStartIncluding": "6.18",
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"versionEndExcluding": "7.1.4"
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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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"versionStartIncluding": "6.18",
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"versionEndExcluding": "7.2"
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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/16f14f55141d4c55c3f321f93c328fff7cd6860a"
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},
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{
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"url": "https://git.kernel.org/stable/c/ab1db64912428cdf06a4f9542e16e0575e9ad59f"
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},
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{
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"url": "https://git.kernel.org/stable/c/5cff1529a2f9b3461a7f5a6e36a86682fc290534"
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}
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],
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"title": "ALSA: us144mkii: capture_urb_complete: redundant usb_anchor_urb corrupts anchor list on each resubmission",
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"x_generator": {
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} |