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usb: gadget: f_uac1_legacy: remove broken string configfs attributes

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-93056

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-93056

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "0854611a19ae4dfa56569e6f640017a1d2dd3312",
        "lessThan": "745adfe6c337f3d5d7737d57529d14a208151b45",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0854611a19ae4dfa56569e6f640017a1d2dd3312",
        "lessThan": "6351ba62778f72dc4f6bc18bfa99e618829cff0d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0854611a19ae4dfa56569e6f640017a1d2dd3312",
        "lessThan": "021b58ac3e58cffa68ed9585ff492a19e98414f6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0854611a19ae4dfa56569e6f640017a1d2dd3312",
        "lessThan": "fd43eae7d539ea7cfc7c9f0d3f0eaa890415e8a7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0854611a19ae4dfa56569e6f640017a1d2dd3312",
        "lessThan": "8b9335aec93975bb9186d63993a5a610e5066ffc",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0854611a19ae4dfa56569e6f640017a1d2dd3312",
        "lessThan": "2ed25c9d4400cf90d9201657963a231c27a5ea57",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0854611a19ae4dfa56569e6f640017a1d2dd3312",
        "lessThan": "977659adb341f6e30fb00dcf183f63f29df879e2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0854611a19ae4dfa56569e6f640017a1d2dd3312",
        "lessThan": "590d74ec8f488e06b9f1c0f8f0941f45531f3a55",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "Documentation/ABI/testing/configfs-usb-gadget-uac1_legacy",
      "Documentation/usb/gadget-testing.rst",
      "drivers/usb/gadget/function/f_uac1_legacy.c",
      "drivers/usb/gadget/function/u_uac1_legacy.h"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.18"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.18",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.52",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.6",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "Documentation/ABI/testing/configfs-usb-gadget-uac1_legacy",
      "Documentation/usb/gadget-testing.rst",
      "drivers/usb/gadget/function/f_uac1_legacy.c",
      "drivers/usb/gadget/function/u_uac1_legacy.h"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-93056

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#37792 · Revision 1
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Publisher date
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