CVE-2026-93056

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_uac1_legacy: remove broken string configfs attributes The UAC1_STR_ATTRIBUTE macro defines configfs show/store handlers for the fn_play, fn_cap, and fn_cntl string options. The store function contains an inverted null check on the kstrndup() return value. This means every write attempt returns -ENOMEM on success and dereferences a NULL pointer on allocation failure. The attributes have been broken and unused for many years. Remove the UAC1_STR_ATTRIBUTE macro and the three attributes it generated. The internal defaults (FILE_PCM_PLAYBACK, FILE_PCM_CAPTURE, FILE_CONTROL) set in f_audio_alloc_inst() are unaffected.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/021b58ac3e58cffa68ed9585ff492a19e98414f6
https://git.kernel.org/stable/c/2ed25c9d4400cf90d9201657963a231c27a5ea57
https://git.kernel.org/stable/c/590d74ec8f488e06b9f1c0f8f0941f45531f3a55
https://git.kernel.org/stable/c/6351ba62778f72dc4f6bc18bfa99e618829cff0d
https://git.kernel.org/stable/c/745adfe6c337f3d5d7737d57529d14a208151b45
https://git.kernel.org/stable/c/8b9335aec93975bb9186d63993a5a610e5066ffc
https://git.kernel.org/stable/c/977659adb341f6e30fb00dcf183f63f29df879e2
https://git.kernel.org/stable/c/fd43eae7d539ea7cfc7c9f0d3f0eaa890415e8a7

Configurations

No configuration.

History

17 Sep 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-17 17:17

Updated : 2026-09-17 17:17

NVD link : CVE-2026-93056

Mitre link : CVE-2026-93056

CVE.ORG link : CVE-2026-93056

JSON object : View

Products Affected

No product.

CWE

No CWE.

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The store function\ncontains an inverted null check on the kstrndup() return value.\n\nThis means every write attempt returns -ENOMEM on success and\ndereferences a NULL pointer on allocation failure. The attributes\nhave been broken and unused for many years.\n\nRemove the UAC1_STR_ATTRIBUTE macro and the three attributes it\ngenerated. The internal defaults (FILE_PCM_PLAYBACK, FILE_PCM_CAPTURE,\nFILE_CONTROL) set in f_audio_alloc_inst() are unaffected."}], "lastModified": "2026-09-17T17:17:59.190", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}