CVE-2026-64478
ALSA: usb-audio: avoid kobject path lookup in DualSense match
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: avoid kobject path lookup in DualSense match The DualSense jack-detection input handler verifies that a matching input device belongs to the same physical controller by building kobject path strings for both the input device and the USB audio device, then comparing the path prefix. This was observed when a weak physical connection caused the controller to rapidly disconnect and reconnect. During that repeated hotplug, snd_dualsense_ih_match() can run while the controller's USB device is being disconnected. kobject_get_path() walks ancestor kobjects and dereferences their names; if the USB device kobject name is no longer valid, this can fault in strlen(): RIP: 0010:strlen+0x10/0x30 Call Trace: kobject_get_path+0x34/0x150 snd_dualsense_ih_match+0x49/0xd0 [snd_usb_audio] input_register_device+0x566/0x6a0 ps_probe+0xb89/0x1590 [hid_playstation] The same ownership check can be done without building kobject path strings. The input device is parented below the HID device, USB interface and USB device, so walking the input device parent chain and comparing against the mixer USB device preserves the check without dereferencing kobject names during disconnect.
INFO
Published Date :
July 25, 2026, 10:17 a.m.
Last Modified :
July 25, 2026, 10:17 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-64478
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update the Linux kernel to the latest stable version.
- Apply vendor-specific patches for the ALSA subsystem if available.
- Rebuild and deploy the updated kernel.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-64478.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64478 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-64478
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-64478 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64478 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 25, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'd0b0264009596c07a77d82808b0dae72bc04ac5c', 'lessThan': 'e4c66a149c408e44e60bfec3fabf08b6b7abbc60', 'versionType': 'git'}, {'status': 'affected', 'version': 'b4b94f092f193d7a2db8e82af5e51519ae89963c', 'lessThan': '4566bf8ae9dbfe81bdc2ff1702d59db8a233b06e', 'versionType': 'git'}, {'status': 'affected', 'version': 'c2d5b0a6c688ffb32c35627e337fbbcc65bc275f', 'lessThan': '662a1d7b5affc424ea4f4bc20dd99be29e687886', 'versionType': 'git'}, {'status': 'affected', 'version': 'd04d301614630724feb4048bf17432fc7964fe74', 'lessThan': 'a47ecd904c51ae6a42957feb3cf2f4266adee2e5', 'versionType': 'git'}, {'status': 'affected', 'version': 'a705899ec6085b12a33aa0fd94a58e82e9e90502', 'lessThan': 'c1da6d3f45036fa63672ee04ad97cb526b40b987', 'versionType': 'git'}, {'status': 'affected', 'version': '79d561c4ec0497669f19a9550cfb74812f60938b', 'lessThan': 'a263eb12cbe2e208e6e637df0f9b0be9a484158e', 'versionType': 'git'}, {'status': 'affected', 'version': '79d561c4ec0497669f19a9550cfb74812f60938b', 'lessThan': '4246dd043b7a4f8e3bc1d2896e81d11220610eda', 'versionType': 'git'}, {'status': 'affected', 'version': '79d561c4ec0497669f19a9550cfb74812f60938b', 'lessThan': '7693c0cc415f3a16a7a3355f245474a5e661be4e', 'versionType': 'git'}, {'status': 'affected', 'version': '104ad9bae11ee450fb7d0595ff7876cfb6527838', 'versionType': 'git'}, {'status': 'affected', 'version': '0105cfc41abeb428d4405951a20e1e239bea5e1d', 'versionType': 'git'}, {'status': 'affected', 'version': '5.10.245', 'lessThan': '5.10.261', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.15.194', 'lessThan': '5.15.212', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.1.155', 'lessThan': '6.1.178', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.6.109', 'lessThan': '6.6.145', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.12.50', 'lessThan': '6.12.96', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.4.300', 'lessThan': '5.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.16.10', 'lessThan': '6.17', 'versionType': 'semver'}], 'programFiles': ['sound/usb/mixer_quirks.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.17'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.17', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.96', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'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-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['sound/usb/mixer_quirks.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: avoid kobject path lookup in DualSense match The DualSense jack-detection input handler verifies that a matching input device belongs to the same physical controller by building kobject path strings for both the input device and the USB audio device, then comparing the path prefix. This was observed when a weak physical connection caused the controller to rapidly disconnect and reconnect. During that repeated hotplug, snd_dualsense_ih_match() can run while the controller's USB device is being disconnected. kobject_get_path() walks ancestor kobjects and dereferences their names; if the USB device kobject name is no longer valid, this can fault in strlen(): RIP: 0010:strlen+0x10/0x30 Call Trace: kobject_get_path+0x34/0x150 snd_dualsense_ih_match+0x49/0xd0 [snd_usb_audio] input_register_device+0x566/0x6a0 ps_probe+0xb89/0x1590 [hid_playstation] The same ownership check can be done without building kobject path strings. The input device is parented below the HID device, USB interface and USB device, so walking the input device parent chain and comparing against the mixer USB device preserves the check without dereferencing kobject names during disconnect. Added Reference https://git.kernel.org/stable/c/4246dd043b7a4f8e3bc1d2896e81d11220610eda Added Reference https://git.kernel.org/stable/c/4566bf8ae9dbfe81bdc2ff1702d59db8a233b06e Added Reference https://git.kernel.org/stable/c/662a1d7b5affc424ea4f4bc20dd99be29e687886 Added Reference https://git.kernel.org/stable/c/7693c0cc415f3a16a7a3355f245474a5e661be4e Added Reference https://git.kernel.org/stable/c/a263eb12cbe2e208e6e637df0f9b0be9a484158e Added Reference https://git.kernel.org/stable/c/a47ecd904c51ae6a42957feb3cf2f4266adee2e5 Added Reference https://git.kernel.org/stable/c/c1da6d3f45036fa63672ee04ad97cb526b40b987 Added Reference https://git.kernel.org/stable/c/e4c66a149c408e44e60bfec3fabf08b6b7abbc60