{"id":"CVE-2026-43007","summary":"accel/qaic: Handle DBC deactivation if the owner went away","details":"In the Linux kernel, the following vulnerability has been resolved:\n\naccel/qaic: Handle DBC deactivation if the owner went away\n\nWhen a DBC is released, the device sends a QAIC_TRANS_DEACTIVATE_FROM_DEV\ntransaction to the host over the QAIC_CONTROL MHI channel. QAIC handles\nthis by calling decode_deactivate() to release the resources allocated for\nthat DBC. Since that handling is done in the qaic_manage_ioctl() context,\nif the user goes away before receiving and handling the deactivation, the\nhost will be out-of-sync with the DBCs available for use, and the DBC\nresources will not be freed unless the device is removed. If another user\nloads and requests to activate a network, then the device assigns the same\nDBC to that network, QAIC will \"indefinitely\" wait for dbc-\u003ein_use = false,\nleading the user process to hang.\n\nAs a solution to this, handle QAIC_TRANS_DEACTIVATE_FROM_DEV transactions\nthat are received after the user has gone away.","modified":"2026-06-18T03:56:45.007135294Z","published":"2026-05-01T14:15:14.914Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43007.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/08021f2d4a557d6491e3bcc288e96425f50aa3cf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2dd67966f39a2abf8ccb4865031c722e40e01b7f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2feec5ae5df785658924ab6bd91280dc3926507c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ee0180e77e6c8482644569632065411de844c515"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f403094d9075d7c565a3d81002b781c325cb3c07"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43007.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43007"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"129776ac2e38231fa9c02ce20e116c99de291666"},{"fixed":"2dd67966f39a2abf8ccb4865031c722e40e01b7f"},{"fixed":"08021f2d4a557d6491e3bcc288e96425f50aa3cf"},{"fixed":"f403094d9075d7c565a3d81002b781c325cb3c07"},{"fixed":"ee0180e77e6c8482644569632065411de844c515"},{"fixed":"2feec5ae5df785658924ab6bd91280dc3926507c"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43007.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.4.0"},{"fixed":"6.6.134"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.81"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.22"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.12"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43007.json"}}],"schema_version":"1.7.5"}