{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90021","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.781Z","datePublished":"2026-09-16T10:33:25.560Z","dateUpdated":"2026-09-16T10:33:25.560Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-16T10:33:25.560Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_midi: initialize work in f_midi_alloc()\n\nf_midi_alloc initializes free_ref to 1 and it can only be incremented\nwhen a sound card is registered via f_midi_register_card().\nf_midi_register_card() is only called in f_midi_bind() which actually\nperforms INIT_WORK. If f_midi_bind() is never run, work is not\ninitialized and the if condition in f_midi_free becomes true,\nthis results in a warning later in __flush_work as work->func = 0.\nFix this by moving INIT_WORK from f_midi_bind() to f_midi_alloc()."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/gadget/function/f_midi.c"],"versions":[{"version":"8653d71ce3763aedcf3d2331f59beda3fecd79e4","lessThan":"3d8b11255e632170f32f1925bfcaf96331f36317","status":"affected","versionType":"git"},{"version":"8653d71ce3763aedcf3d2331f59beda3fecd79e4","lessThan":"02ac76f27db23ef652358458c272d9d2d6f51167","status":"affected","versionType":"git"},{"version":"8653d71ce3763aedcf3d2331f59beda3fecd79e4","lessThan":"858576de6b2f5166b08dae803f0fd0766dcb3002","status":"affected","versionType":"git"},{"version":"8653d71ce3763aedcf3d2331f59beda3fecd79e4","lessThan":"7e07d3e4c389217d7d7171d80edf2e23ac70f1ea","status":"affected","versionType":"git"},{"version":"89019ab7a64fcdf98a2ba7799e5c6aff58d4a05d","status":"affected","versionType":"git"},{"version":"3635523e9b96213969693c320302d536774d8e9b","status":"affected","versionType":"git"},{"version":"5.4.291","lessThan":"5.5","status":"affected","versionType":"semver"},{"version":"5.10.235","lessThan":"5.11","status":"affected","versionType":"semver"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/gadget/function/f_midi.c"],"versions":[{"version":"5.12","status":"affected"},{"version":"0","lessThan":"5.12","status":"unaffected","versionType":"semver"},{"version":"6.12.110","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.51","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.5","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.18.51"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"7.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"7.3-rc2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.291"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.235"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/3d8b11255e632170f32f1925bfcaf96331f36317"},{"url":"https://git.kernel.org/stable/c/02ac76f27db23ef652358458c272d9d2d6f51167"},{"url":"https://git.kernel.org/stable/c/858576de6b2f5166b08dae803f0fd0766dcb3002"},{"url":"https://git.kernel.org/stable/c/7e07d3e4c389217d7d7171d80edf2e23ac70f1ea"}],"title":"usb: gadget: f_midi: initialize work in f_midi_alloc()","x_generator":{"engine":"bippy-1.2.0"}}}}