CVE-2026-46004None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: ALSA: caiaq: Handle probe errors properly The probe procedure of setup_card() in caiaq driver doesn't treat the error cases gracefully, e.g. the error from snd_card_re…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
In the Linux kernel, the following vulnerability has been resolved:
ALSA: caiaq: Handle probe errors properly
The probe procedure of setup_card() in caiaq driver doesn't treat the error cases gracefully, e.g. the error from snd_card_register() calls snd_card_free() but continues. This would lead to a UAF for the further calls like snd_usb_caiaq_control_init(), as Berk suggested in another patch in the link below.
However, the problem is not only that; in general, this function drops the all error handlings (as it's a void function) although its caller can propagate an error to snd_probe(), which eventually calls snd_card_free() as a proper error path. That said, we should treat each error case in setup_card(), and just return the error code promptly, which is then handled later as a fatal error in snd_probe().
This patch achieves it by changing the setup_card() to return an error code. Also, the superfluous snd_card_free() call is removed, too.
Note that card->private_free can be set still safely at returning an error. All called functions in card_free() have checks of the unassigned resources or NULL checks.
Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < da938aa9fc7826901921dcea225948ab21a97e45Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < 09616e25f502080ba684fc7fcf959d1376ab756dLinux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < b956e48371f2ff72b76be9a829800ecec963bd45Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < f537e3ad69609f6924a4db6b4a7f6561f5288bddLinux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < 6251e3e256337a30160ef59ab1580dde4d1acd28Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < e59ecd4ee3a450db6cb4e4ecaa3efdd593f80056Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < 096dd8519cf2f768e9e14f224b627f7aaee1a9c5Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < 28abd224db4a49560b452115bca3672a20e45b2fLinux 2.6.25Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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