CVE-2026-64336Medium· 5.5▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: USB: serial: keyspan_pda: fix information leak The write() callback is supposed to return the number of characters accepted or a negative errno. Since the addition of …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 23.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.2%
0.2% → 0.2%
Last analysed / modified upstream
— → 5.5
none → medium
5.5 → —
medium → none
— → 5.5
none → medium
In the Linux kernel, the following vulnerability has been resolved:
USB: serial: keyspan_pda: fix information leak
The write() callback is supposed to return the number of characters accepted or a negative errno. Since the addition of write fifo support the keyspan_pda implementation will however return the number characters submitted to the device if the write urb is not already in use. If this number is larger than the number of characters passed to write(), the line discipline continues writing data from beyond the tty write buffer.
Fix the information leak by making sure that keyspan_pda_write_start() returns zero on success as intended.
linux_kernel >= 5.11, < 5.15.212linux_kernel >= 5.16, < 6.1.178linux_kernel >= 6.2, < 6.6.145linux_kernel >= 6.7, < 6.12.96linux_kernel >= 6.13, < 6.18.39linux_kernel >= 6.19, < 7.1.4linux_kernel = 7.2Upgrade past the affected range:
linux_kernel 7.1.4Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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