CVE-2026-64601

In the Linux kernel, the following vulnerability has been resolved: ALSA: us144mkii: capture_urb_complete: redundant usb_anchor_urb corrupts anchor list on each resubmission In capture_urb_complete(), usb_anchor_urb() is called on every completion callback, but the URB is already anchored from the initial submission in tascam_trigger_start(). Each redundant call corrupts the anchor's doubly-linked list and inflates the URB refcount. When usb_kill_anchored_urbs() traverses the list during stream stop / suspend / disconnect, the corrupted list leads to use-after-free. Remove the redundant usb_anchor_urb() from the resubmit path.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/16f14f55141d4c55c3f321f93c328fff7cd6860a
https://git.kernel.org/stable/c/5cff1529a2f9b3461a7f5a6e36a86682fc290534
https://git.kernel.org/stable/c/ab1db64912428cdf06a4f9542e16e0575e9ad59f

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-06 08:16

Updated : 2026-08-17 05:18

NVD link : CVE-2026-64601

Mitre link : CVE-2026-64601

CVE.ORG link : CVE-2026-64601

JSON object : View

Products Affected

No product.

CWE

No CWE.

{"id": "CVE-2026-64601", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "c1bb0c13e430623c26543baae5bb9ae21139db87", "lessThan": "16f14f55141d4c55c3f321f93c328fff7cd6860a", "versionType": "git"}, {"status": "affected", "version": "c1bb0c13e430623c26543baae5bb9ae21139db87", "lessThan": "ab1db64912428cdf06a4f9542e16e0575e9ad59f", "versionType": "git"}, {"status": "affected", "version": "c1bb0c13e430623c26543baae5bb9ae21139db87", "lessThan": "5cff1529a2f9b3461a7f5a6e36a86682fc290534", "versionType": "git"}], "programFiles": ["sound/usb/usx2y/us144mkii_capture.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.18"}, {"status": "unaffected", "version": "0", "lessThan": "6.18", "versionType": "semver"}, {"status": "unaffected", "version": "6.18.39", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.4", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["sound/usb/usx2y/us144mkii_capture.c"], "defaultStatus": "affected"}]}], "published": "2026-08-06T08:16:35.797", "references": [{"url": "https://git.kernel.org/stable/c/16f14f55141d4c55c3f321f93c328fff7cd6860a", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5cff1529a2f9b3461a7f5a6e36a86682fc290534", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ab1db64912428cdf06a4f9542e16e0575e9ad59f", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Received", "descriptions": [{"lang": "en", "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."}], "lastModified": "2026-08-17T05:18:06.800", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}