{"id":"AZL-88689","summary":"CVE-2026-46004 affecting package kernel for versions less than 6.6.141.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: caiaq: Handle probe errors properly\n\nThe probe procedure of setup_card() in caiaq driver doesn't treat the\nerror cases gracefully, e.g. the error from snd_card_register() calls\nsnd_card_free() but continues.  This would lead to a UAF for the\nfurther calls like snd_usb_caiaq_control_init(), as Berk suggested in\nanother patch in the link below.\n\nHowever, the problem is not only that; in general, this function drops\nthe all error handlings (as it's a void function) although its caller\ncan propagate an error to snd_probe(), which eventually calls\nsnd_card_free() as a proper error path.  That said, we should treat\neach error case in setup_card(), and just return the error code\npromptly, which is then handled later as a fatal error in snd_probe().\n\nThis patch achieves it by changing the setup_card() to return an error\ncode.  Also, the superfluous snd_card_free() call is removed, too.\n\nNote that card-\u003eprivate_free can be set still safely at returning an\nerror.  All called functions in card_free() have checks of the\nunassigned resources or NULL checks.","modified":"2026-08-28T17:47:38.147730731Z","published":"2026-05-27T14:17:18Z","upstream":["CVE-2026-46004"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46004"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.141.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-88689.json"}}],"schema_version":"1.9.0"}