CVE-2026-64487None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: ALSA: caiaq: fix out-of-bounds read in the Traktor Kontrol S4 input parser snd_usb_caiaq_tks4_dispatch() decodes the Traktor Kontrol S4 input stream in fixed 16-byte (…
▾ 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
0.2%
In the Linux kernel, the following vulnerability has been resolved:
ALSA: caiaq: fix out-of-bounds read in the Traktor Kontrol S4 input parser
snd_usb_caiaq_tks4_dispatch() decodes the Traktor Kontrol S4 input stream in fixed 16-byte (TKS4_MSGBLOCK_SIZE) message blocks. On every iteration it advances buf and subtracts the block size while looping on "while (len)".
len is urb->actual_length. That value is supplied by the device and is not guaranteed to be a multiple of 16. When a final short block leaves len between 1 and 15, the loop runs once more, reads up to buf[15], and then does "len -= TKS4_MSGBLOCK_SIZE". As len is unsigned this underflows to a huge value. The loop then keeps iterating and walking buf far past the end of the 512-byte ep4_in_buf, reading out of bounds until a bogus block id happens to be hit.
Iterate only while a full message block is available. This stops the unsigned underflow and silently drops any trailing partial block, which carries no complete control value anyway.
The sibling endpoint-4 parsers are not affected. The Traktor Kontrol X1 and Maschine arms in snd_usb_caiaq_ep4_reply_dispatch() floor urb->actual_length before dispatching.
Linux >= 15c5ab607045e278ebf4d2ca4aea2250617d50ca < de5f9edc705497b1b2c6b173b22f283486d2fd91Linux >= 15c5ab607045e278ebf4d2ca4aea2250617d50ca < 70d6d4cfa4ad09688aed2ec8a0cfa72c31f60334Linux >= 15c5ab607045e278ebf4d2ca4aea2250617d50ca < 884f575cc6acb136eb4a161d925147f85b59c27eLinux >= 15c5ab607045e278ebf4d2ca4aea2250617d50ca < 05df59b9a61f7ca66548df079d306c41da23845dLinux >= 15c5ab607045e278ebf4d2ca4aea2250617d50ca < 3cad86197c7bf8b45bb1d8adc1099d0913e80469Linux >= 15c5ab607045e278ebf4d2ca4aea2250617d50ca < a5fd3122283bf75c04f6414bf610100beb0565b0Linux >= 15c5ab607045e278ebf4d2ca4aea2250617d50ca < 0680413f2f10aab43878dd3db711a6a9e45bab7cLinux >= 15c5ab607045e278ebf4d2ca4aea2250617d50ca < f7f3f9fd81e7adbaa12c2e62ee07f0e094a543fdLinux 2.6.37Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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