CVE-2026-93056usb: gadget: f_uac1_legacy: remove broken string configfs attributes
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 0854611a19ae4dfa56569e6f640017a1d2dd3312 builds before 745adfe6c337f3d5d7737d57529d14a208151b45; 0854611a19ae4dfa56569e6f640017a1d2dd3312 builds before 6351ba62778f72dc4f6bc18bfa99e618829cff0d; 0854611a19ae4dfa56569e6f640017a1d2dd3312 builds before 021b58ac3e58cffa68ed9585ff492a19e98414f6; from 0854611a19ae4dfa56569e6f640017a1d2dd3312 before fd43eae7d539ea7cfc7c9f0d3f0eaa890415e8a7; 0854611a19ae4dfa56569e6f640017a1d2dd3312 builds before 8b9335aec93975bb9186d63993a5a610e5066ffc; 0854611a19ae4dfa56569e6f640017a1d2dd3312 builds before 2ed25c9d4400cf90d9201657963a231c27a5ea57; from 0854611a19ae4dfa56569e6f640017a1d2dd3312 before 977659adb341f6e30fb00dcf183f63f29df879e2; 0854611a19ae4dfa56569e6f640017a1d2dd3312 builds before 590d74ec8f488e06b9f1c0f8f0941f45531f3a55 | CNA record |
References
- https://git.kernel.org/stable/c/745adfe6c337f3d5d7737d57529d14a208151b45
- https://git.kernel.org/stable/c/6351ba62778f72dc4f6bc18bfa99e618829cff0d
- https://git.kernel.org/stable/c/021b58ac3e58cffa68ed9585ff492a19e98414f6
- https://git.kernel.org/stable/c/fd43eae7d539ea7cfc7c9f0d3f0eaa890415e8a7
- https://git.kernel.org/stable/c/8b9335aec93975bb9186d63993a5a610e5066ffc
- https://git.kernel.org/stable/c/2ed25c9d4400cf90d9201657963a231c27a5ea57
- https://git.kernel.org/stable/c/977659adb341f6e30fb00dcf183f63f29df879e2
- https://git.kernel.org/stable/c/590d74ec8f488e06b9f1c0f8f0941f45531f3a55
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.