Vulnerability Description
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.
References
- https://git.kernel.org/stable/c/351c8d8650d1ccc006255fa01f98b6c6496a02e5
- https://git.kernel.org/stable/c/a4a97ab3db5c081eb6e7dba91306adefb461e0bd
- https://git.kernel.org/stable/c/df7c8aba7309f4dc55df94e06b67f576c0f52406
- https://git.kernel.org/stable/c/e8fb0f13e45cf361fd06593d3cb2d89915cd3bd0
FAQ
What is CVE-2023-53840?
CVE-2023-53840 is a documented vulnerability. 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. ...
How severe is CVE-2023-53840?
CVSS scoring is not yet available for CVE-2023-53840. Check NVD for updates.
Is there a patch for CVE-2023-53840?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.