{"id":"CVE-2026-43343","state":"PUBLISHED","title":"usb: gadget: f_subset: Fix unbalanced refcnt in geth_free","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_subset: Fix unbalanced refcnt in geth_free\n\ngeth_alloc() increments the reference count, but geth_free() fails to\ndecrement it. This prevents the configuration of attributes via configfs\nafter unlinking the function.\n\nDecrement the reference count in geth_free() to ensure proper cleanup.","publishedAt":"2026-05-08T13:37:20.663Z","updatedAt":"2026-05-11T22:22:44.192Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"02832e56f88a981474ee4c7c141f46fc1b4454f4","status":"affected","lessThan":"a932b171554714b1bca313b853c7aa9f2930f9aa","versionType":"git"},{"version":"02832e56f88a981474ee4c7c141f46fc1b4454f4","status":"affected","lessThan":"d7d702407b61e96286a15b6e715572f541a8d41c","versionType":"git"},{"version":"02832e56f88a981474ee4c7c141f46fc1b4454f4","status":"affected","lessThan":"3f5bfc550a40d7493b1cf09540ed6b412b3b82be","versionType":"git"},{"version":"02832e56f88a981474ee4c7c141f46fc1b4454f4","status":"affected","lessThan":"75776a055b656873319c3830fed471daef3ceb23","versionType":"git"},{"version":"02832e56f88a981474ee4c7c141f46fc1b4454f4","status":"affected","lessThan":"cc8ec610cd14c093a19371691a7ce1ee5421e829","versionType":"git"},{"version":"02832e56f88a981474ee4c7c141f46fc1b4454f4","status":"affected","lessThan":"3d436670b47415da042452618fb5d8e317ab095f","versionType":"git"},{"version":"02832e56f88a981474ee4c7c141f46fc1b4454f4","status":"affected","lessThan":"23e4851ce348a329d974e84e828155dda9f52122","versionType":"git"},{"version":"02832e56f88a981474ee4c7c141f46fc1b4454f4","status":"affected","lessThan":"caa27923aacd8a5869207842f2ab1657c6c0c7bc","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/gadget/function/f_subset.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.11","versionType":"semver"},{"version":"5.10.253","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.203","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.168","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.134","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.81","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.22","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.12","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/gadget/function/f_subset.c"]}],"references":["https://git.kernel.org/stable/c/a932b171554714b1bca313b853c7aa9f2930f9aa","https://git.kernel.org/stable/c/d7d702407b61e96286a15b6e715572f541a8d41c","https://git.kernel.org/stable/c/3f5bfc550a40d7493b1cf09540ed6b412b3b82be","https://git.kernel.org/stable/c/75776a055b656873319c3830fed471daef3ceb23","https://git.kernel.org/stable/c/cc8ec610cd14c093a19371691a7ce1ee5421e829","https://git.kernel.org/stable/c/3d436670b47415da042452618fb5d8e317ab095f","https://git.kernel.org/stable/c/23e4851ce348a329d974e84e828155dda9f52122","https://git.kernel.org/stable/c/caa27923aacd8a5869207842f2ab1657c6c0c7bc"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43343.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43343","state":"PUBLISHED","datePublished":"2026-05-08T13:37:20.663Z","dateUpdated":"2026-05-11T22:22:44.192Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:56.003Z"},"containers":{"cna":{"title":"usb: gadget: f_subset: Fix unbalanced refcnt in geth_free","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_subset: Fix unbalanced refcnt in geth_free\n\ngeth_alloc() increments the reference count, but geth_free() fails to\ndecrement it. This prevents the configuration of attributes via configfs\nafter unlinking the function.\n\nDecrement the reference count in geth_free() to ensure proper cleanup."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"02832e56f88a981474ee4c7c141f46fc1b4454f4","status":"affected","lessThan":"a932b171554714b1bca313b853c7aa9f2930f9aa","versionType":"git"},{"version":"02832e56f88a981474ee4c7c141f46fc1b4454f4","status":"affected","lessThan":"d7d702407b61e96286a15b6e715572f541a8d41c","versionType":"git"},{"version":"02832e56f88a981474ee4c7c141f46fc1b4454f4","status":"affected","lessThan":"3f5bfc550a40d7493b1cf09540ed6b412b3b82be","versionType":"git"},{"version":"02832e56f88a981474ee4c7c141f46fc1b4454f4","status":"affected","lessThan":"75776a055b656873319c3830fed471daef3ceb23","versionType":"git"},{"version":"02832e56f88a981474ee4c7c141f46fc1b4454f4","status":"affected","lessThan":"cc8ec610cd14c093a19371691a7ce1ee5421e829","versionType":"git"},{"version":"02832e56f88a981474ee4c7c141f46fc1b4454f4","status":"affected","lessThan":"3d436670b47415da042452618fb5d8e317ab095f","versionType":"git"},{"version":"02832e56f88a981474ee4c7c141f46fc1b4454f4","status":"affected","lessThan":"23e4851ce348a329d974e84e828155dda9f52122","versionType":"git"},{"version":"02832e56f88a981474ee4c7c141f46fc1b4454f4","status":"affected","lessThan":"caa27923aacd8a5869207842f2ab1657c6c0c7bc","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/gadget/function/f_subset.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.11","versionType":"semver"},{"version":"5.10.253","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.203","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.168","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.134","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.81","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.22","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.12","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/gadget/function/f_subset.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a932b171554714b1bca313b853c7aa9f2930f9aa"},{"url":"https://git.kernel.org/stable/c/d7d702407b61e96286a15b6e715572f541a8d41c"},{"url":"https://git.kernel.org/stable/c/3f5bfc550a40d7493b1cf09540ed6b412b3b82be"},{"url":"https://git.kernel.org/stable/c/75776a055b656873319c3830fed471daef3ceb23"},{"url":"https://git.kernel.org/stable/c/cc8ec610cd14c093a19371691a7ce1ee5421e829"},{"url":"https://git.kernel.org/stable/c/3d436670b47415da042452618fb5d8e317ab095f"},{"url":"https://git.kernel.org/stable/c/23e4851ce348a329d974e84e828155dda9f52122"},{"url":"https://git.kernel.org/stable/c/caa27923aacd8a5869207842f2ab1657c6c0c7bc"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:22:44.192Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.11","versionEndExcluding":"5.10.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.11","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.11","versionEndExcluding":"6.1.168"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.11","versionEndExcluding":"6.6.134"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.11","versionEndExcluding":"6.12.81"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.11","versionEndExcluding":"6.18.22"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.11","versionEndExcluding":"6.19.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.11","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}