{"id":"CVE-2026-93056","state":"PUBLISHED","title":"usb: gadget: f_uac1_legacy: remove broken string configfs attributes","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_uac1_legacy: remove broken string configfs attributes\n\nThe UAC1_STR_ATTRIBUTE macro defines configfs show/store handlers for\nthe fn_play, fn_cap, and fn_cntl string options. 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.","publishedAt":"2026-09-17T16:10:44.442Z","updatedAt":"2026-10-19T09:04:52.242Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0854611a19ae4dfa56569e6f640017a1d2dd3312","status":"affected","lessThan":"745adfe6c337f3d5d7737d57529d14a208151b45","versionType":"git"},{"version":"0854611a19ae4dfa56569e6f640017a1d2dd3312","status":"affected","lessThan":"6351ba62778f72dc4f6bc18bfa99e618829cff0d","versionType":"git"},{"version":"0854611a19ae4dfa56569e6f640017a1d2dd3312","status":"affected","lessThan":"021b58ac3e58cffa68ed9585ff492a19e98414f6","versionType":"git"},{"version":"0854611a19ae4dfa56569e6f640017a1d2dd3312","status":"affected","lessThan":"fd43eae7d539ea7cfc7c9f0d3f0eaa890415e8a7","versionType":"git"},{"version":"0854611a19ae4dfa56569e6f640017a1d2dd3312","status":"affected","lessThan":"8b9335aec93975bb9186d63993a5a610e5066ffc","versionType":"git"},{"version":"0854611a19ae4dfa56569e6f640017a1d2dd3312","status":"affected","lessThan":"2ed25c9d4400cf90d9201657963a231c27a5ea57","versionType":"git"},{"version":"0854611a19ae4dfa56569e6f640017a1d2dd3312","status":"affected","lessThan":"977659adb341f6e30fb00dcf183f63f29df879e2","versionType":"git"},{"version":"0854611a19ae4dfa56569e6f640017a1d2dd3312","status":"affected","lessThan":"590d74ec8f488e06b9f1c0f8f0941f45531f3a55","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.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"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.18","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.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"]}],"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"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93056.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93056","state":"PUBLISHED","datePublished":"2026-09-17T16:10:44.442Z","dateUpdated":"2026-10-19T09:04:52.242Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-17T15:57:05.659Z"},"containers":{"cna":{"title":"usb: gadget: f_uac1_legacy: remove broken string configfs attributes","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_uac1_legacy: remove broken string configfs attributes\n\nThe UAC1_STR_ATTRIBUTE macro defines configfs show/store handlers for\nthe fn_play, fn_cap, and fn_cntl string options. 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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0854611a19ae4dfa56569e6f640017a1d2dd3312","status":"affected","lessThan":"745adfe6c337f3d5d7737d57529d14a208151b45","versionType":"git"},{"version":"0854611a19ae4dfa56569e6f640017a1d2dd3312","status":"affected","lessThan":"6351ba62778f72dc4f6bc18bfa99e618829cff0d","versionType":"git"},{"version":"0854611a19ae4dfa56569e6f640017a1d2dd3312","status":"affected","lessThan":"021b58ac3e58cffa68ed9585ff492a19e98414f6","versionType":"git"},{"version":"0854611a19ae4dfa56569e6f640017a1d2dd3312","status":"affected","lessThan":"fd43eae7d539ea7cfc7c9f0d3f0eaa890415e8a7","versionType":"git"},{"version":"0854611a19ae4dfa56569e6f640017a1d2dd3312","status":"affected","lessThan":"8b9335aec93975bb9186d63993a5a610e5066ffc","versionType":"git"},{"version":"0854611a19ae4dfa56569e6f640017a1d2dd3312","status":"affected","lessThan":"2ed25c9d4400cf90d9201657963a231c27a5ea57","versionType":"git"},{"version":"0854611a19ae4dfa56569e6f640017a1d2dd3312","status":"affected","lessThan":"977659adb341f6e30fb00dcf183f63f29df879e2","versionType":"git"},{"version":"0854611a19ae4dfa56569e6f640017a1d2dd3312","status":"affected","lessThan":"590d74ec8f488e06b9f1c0f8f0941f45531f3a55","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.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"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.18","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.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"]}],"references":[{"url":"https://git.kernel.org/stable/c/745adfe6c337f3d5d7737d57529d14a208151b45"},{"url":"https://git.kernel.org/stable/c/6351ba62778f72dc4f6bc18bfa99e618829cff0d"},{"url":"https://git.kernel.org/stable/c/021b58ac3e58cffa68ed9585ff492a19e98414f6"},{"url":"https://git.kernel.org/stable/c/fd43eae7d539ea7cfc7c9f0d3f0eaa890415e8a7"},{"url":"https://git.kernel.org/stable/c/8b9335aec93975bb9186d63993a5a610e5066ffc"},{"url":"https://git.kernel.org/stable/c/2ed25c9d4400cf90d9201657963a231c27a5ea57"},{"url":"https://git.kernel.org/stable/c/977659adb341f6e30fb00dcf183f63f29df879e2"},{"url":"https://git.kernel.org/stable/c/590d74ec8f488e06b9f1c0f8f0941f45531f3a55"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:04:52.242Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}