{"id":"CVE-2026-74497","summary":"ALSA: usb-audio: Clamp frame size in implicit-feedback mode","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Clamp frame size in implicit-feedback mode\n\nsnd_usb_handle_sync_urb() scales received sync packet sizes by the sender's\nstride and stores the result directly in out_packet-\u003epacket_size[i]. If a\nconnected USB device sends an oversized sync packet, this frame count can\nexceed ep-\u003emaxframesize.\n\nThe un-clamped frame count then propagates to the playback endpoint queue,\npotentially driving packet transfers beyond the endpoint's hardware frame\nlimits.\n\nCap the calculated frame count against ep-\u003emaxframesize in\nsnd_usb_handle_sync_urb() to prevent oversized packets from entering the\nplayback queue.","modified":"2026-08-17T03:54:57.434630173Z","published":"2026-08-15T12:27:24.494Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74497.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2db4535d6af79276a64449201c5be5feffb31c64"},{"type":"WEB","url":"https://git.kernel.org/stable/c/53f0aa37eb945f3c983f61d12fc35eb33debb8a9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/56ac3e7c90f6b45969c3fd07a98fad760ffd6901"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8d7a30c50c2e58a6839634ed0acde14466d1dc61"},{"type":"WEB","url":"https://git.kernel.org/stable/c/be97fea7451d758881b95af78e900dd0d58a382a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74497.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74497"},{"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":"28acb12014fb0c3e1edfdab1b1e3e266cf651550"},{"fixed":"56ac3e7c90f6b45969c3fd07a98fad760ffd6901"},{"fixed":"be97fea7451d758881b95af78e900dd0d58a382a"},{"fixed":"2db4535d6af79276a64449201c5be5feffb31c64"},{"fixed":"53f0aa37eb945f3c983f61d12fc35eb33debb8a9"},{"fixed":"8d7a30c50c2e58a6839634ed0acde14466d1dc61"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74497.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.8.0"},{"fixed":"6.6.151"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.103"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.44"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74497.json"}}],"schema_version":"1.9.0"}