CVE-2026-64478 (GCVE-0-2026-64478)
Vulnerability from cvelistv5
Published
2026-07-25 08:51
Modified
2026-08-17 04:56
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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dereferences their names; if the USB device kobject name is no longer
valid, this can fault in strlen():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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: d0b0264009596c07a77d82808b0dae72bc04ac5c Version: b4b94f092f193d7a2db8e82af5e51519ae89963c Version: c2d5b0a6c688ffb32c35627e337fbbcc65bc275f Version: d04d301614630724feb4048bf17432fc7964fe74 Version: a705899ec6085b12a33aa0fd94a58e82e9e90502 Version: 79d561c4ec0497669f19a9550cfb74812f60938b Version: 79d561c4ec0497669f19a9550cfb74812f60938b Version: 79d561c4ec0497669f19a9550cfb74812f60938b Version: 104ad9bae11ee450fb7d0595ff7876cfb6527838 Version: 0105cfc41abeb428d4405951a20e1e239bea5e1d Version: 5.10.245 ≤ Version: 5.15.194 ≤ Version: 6.1.155 ≤ Version: 6.6.109 ≤ Version: 6.12.50 ≤ Version: 5.4.300 ≤ Version: 6.16.10 ≤ |
||
{
"containers": {
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"programFiles": [
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],
"cpeApplicability": [
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: avoid kobject path lookup in DualSense match\n\nThe DualSense jack-detection input handler verifies that a matching input\ndevice belongs to the same physical controller by building kobject path\nstrings for both the input device and the USB audio device, then comparing\nthe path prefix.\n\nThis was observed when a weak physical connection caused the controller\nto rapidly disconnect and reconnect. During that repeated hotplug,\nsnd_dualsense_ih_match() can run while the controller\u0027s USB device is\nbeing disconnected. kobject_get_path() walks ancestor kobjects and\ndereferences their names; if the USB device kobject name is no longer\nvalid, this can fault in strlen():\n\n RIP: 0010:strlen+0x10/0x30\n Call Trace:\n kobject_get_path+0x34/0x150\n snd_dualsense_ih_match+0x49/0xd0 [snd_usb_audio]\n input_register_device+0x566/0x6a0\n ps_probe+0xb89/0x1590 [hid_playstation]\n\nThe same ownership check can be done without building kobject path\nstrings. The input device is parented below the HID device, USB interface\nand USB device, so walking the input device parent chain and comparing\nagainst the mixer USB device preserves the check without dereferencing\nkobject names during disconnect."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T04:56:24.788Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/e4c66a149c408e44e60bfec3fabf08b6b7abbc60"
},
{
"url": "https://git.kernel.org/stable/c/4566bf8ae9dbfe81bdc2ff1702d59db8a233b06e"
},
{
"url": "https://git.kernel.org/stable/c/662a1d7b5affc424ea4f4bc20dd99be29e687886"
},
{
"url": "https://git.kernel.org/stable/c/a47ecd904c51ae6a42957feb3cf2f4266adee2e5"
},
{
"url": "https://git.kernel.org/stable/c/c1da6d3f45036fa63672ee04ad97cb526b40b987"
},
{
"url": "https://git.kernel.org/stable/c/a263eb12cbe2e208e6e637df0f9b0be9a484158e"
},
{
"url": "https://git.kernel.org/stable/c/4246dd043b7a4f8e3bc1d2896e81d11220610eda"
},
{
"url": "https://git.kernel.org/stable/c/7693c0cc415f3a16a7a3355f245474a5e661be4e"
}
],
"title": "ALSA: usb-audio: avoid kobject path lookup in DualSense match",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-64478",
"datePublished": "2026-07-25T08:51:40.299Z",
"dateReserved": "2026-07-19T15:36:31.791Z",
"dateUpdated": "2026-08-17T04:56:24.788Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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