CVE-2023-53840

Summary

In the Linux kernel, the following vulnerability has been resolved:

usb: early: xhci-dbc: Fix a potential out-of-bound memory access

If xdbc_bulk_write() fails, the values in 'buf' can be anything. So the string is not guaranteed to be NULL terminated when xdbc_trace() is called.

Reserve an extra byte, which will be zeroed automatically because 'buf' is a static variable, in order to avoid troubles, should it happen.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxaeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0 < e8fb0f13e45cf361fd06593d3cb2d89915cd3bd0affected
LinuxLinuxaeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0 < 351c8d8650d1ccc006255fa01f98b6c6496a02e5affected
LinuxLinuxaeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0 < df7c8aba7309f4dc55df94e06b67f576c0f52406affected
LinuxLinuxaeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0 < a4a97ab3db5c081eb6e7dba91306adefb461e0bdaffected
LinuxLinux4.12affected
LinuxLinux0 < 4.12unaffected
LinuxLinux5.15.99 <= 5.15.*unaffected
LinuxLinux6.1.16 <= 6.1.*unaffected
LinuxLinux6.2.3 <= 6.2.*unaffected
LinuxLinux6.3 <= *unaffected

Weaknesses

References