{"id":"CVE-2026-46004","title":"ALSA: caiaq: Handle probe errors properly","summary":"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_re…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < da938aa9fc7826901921dcea225948ab21a97e45","Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < 09616e25f502080ba684fc7fcf959d1376ab756d","Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < b956e48371f2ff72b76be9a829800ecec963bd45","Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < f537e3ad69609f6924a4db6b4a7f6561f5288bdd","Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < 6251e3e256337a30160ef59ab1580dde4d1acd28","Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < e59ecd4ee3a450db6cb4e4ecaa3efdd593f80056","Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < 096dd8519cf2f768e9e14f224b627f7aaee1a9c5","Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < 28abd224db4a49560b452115bca3672a20e45b2f","Linux 2.6.25"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:04:49.755474Z"},"published":"2026-05-27","updated":"2026-11-06","sourceUpdated":"2026-11-06T16:13:31.429Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-46004","references":[{"url":"https://git.kernel.org/stable/c/da938aa9fc7826901921dcea225948ab21a97e45"},{"url":"https://git.kernel.org/stable/c/09616e25f502080ba684fc7fcf959d1376ab756d"},{"url":"https://git.kernel.org/stable/c/b956e48371f2ff72b76be9a829800ecec963bd45"},{"url":"https://git.kernel.org/stable/c/f537e3ad69609f6924a4db6b4a7f6561f5288bdd"},{"url":"https://git.kernel.org/stable/c/6251e3e256337a30160ef59ab1580dde4d1acd28"},{"url":"https://git.kernel.org/stable/c/e59ecd4ee3a450db6cb4e4ecaa3efdd593f80056"},{"url":"https://git.kernel.org/stable/c/096dd8519cf2f768e9e14f224b627f7aaee1a9c5"},{"url":"https://git.kernel.org/stable/c/28abd224db4a49560b452115bca3672a20e45b2f"}],"tags":["cve.org"],"epss":0.00129,"epssPercentile":0.02579,"ingestedAt":"2026-11-06T16:57:43.352Z","slug":"CVE-2026-46004","body":"## Overview\n\nIn 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->private_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.\n\n## Affected\n\n- `Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < da938aa9fc7826901921dcea225948ab21a97e45`\n- `Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < 09616e25f502080ba684fc7fcf959d1376ab756d`\n- `Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < b956e48371f2ff72b76be9a829800ecec963bd45`\n- `Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < f537e3ad69609f6924a4db6b4a7f6561f5288bdd`\n- `Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < 6251e3e256337a30160ef59ab1580dde4d1acd28`\n- `Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < e59ecd4ee3a450db6cb4e4ecaa3efdd593f80056`\n- `Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < 096dd8519cf2f768e9e14f224b627f7aaee1a9c5`\n- `Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < 28abd224db4a49560b452115bca3672a20e45b2f`\n- `Linux 2.6.25`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}