CVE-2026-93056: Linux vulnerability

CVE-2026-93056: usb: gadget: f_uac1_legacy: remove broken string configfs attributes

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.

UnknownCVSS not scoredNot KEV-listedUpdatedOct 19, 2026, 09:04 UTC (UTC+00:00)

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Sep 17, 2026, 16:10 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

3Timeline events

0ADP providers

9Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
Sep 17, 2026, 15:57 UTC (UTC+00:00)
CVE publishedCVE Program
The CVE record was published.
Sep 17, 2026, 16:10 UTC (UTC+00:00)
CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
Oct 19, 2026, 09:04 UTC (UTC+00:00)

Source materials

CVE List V5 sourceCVE List V5
https://git.kernel.org/stable/c/745adfe6c337f3d5d7737d57529d14a208151b45CVE reference, Linux
https://git.kernel.org/stable/c/6351ba62778f72dc4f6bc18bfa99e618829cff0dCVE reference, Linux
https://git.kernel.org/stable/c/021b58ac3e58cffa68ed9585ff492a19e98414f6CVE reference, Linux
https://git.kernel.org/stable/c/fd43eae7d539ea7cfc7c9f0d3f0eaa890415e8a7CVE reference, Linux
https://git.kernel.org/stable/c/8b9335aec93975bb9186d63993a5a610e5066ffcCVE reference, Linux
https://git.kernel.org/stable/c/2ed25c9d4400cf90d9201657963a231c27a5ea57CVE reference, Linux
https://git.kernel.org/stable/c/977659adb341f6e30fb00dcf183f63f29df879e2CVE reference, Linux
https://git.kernel.org/stable/c/590d74ec8f488e06b9f1c0f8f0941f45531f3a55CVE reference, Linux

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

LinuxLinux0854611a19ae4dfa56569e6f640017a1d2dd3312, 0854611a19ae4dfa56569e6f640017a1d2dd3312, 0854611a19ae4dfa56569e6f640017a1d2dd3312, 0854611a19ae4dfa56569e6f640017a1d2dd3312, 0854611a19ae4dfa56569e6f640017a1d2dd3312, 0854611a19ae4dfa56569e6f640017a1d2dd3312, 0854611a19ae4dfa56569e6f640017a1d2dd3312, 0854611a19ae4dfa56569e6f640017a1d2dd3312unaffected

LinuxLinux3.18, 0, 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6, 7.3affected

Weakness

CWE details

No CWE listed

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