CVE-2021-47642

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

video: fbdev: nvidiafb: Use strscpy() to prevent buffer overflow

Coverity complains of a possible buffer overflow. However, given the static scope of nvidia_setup_i2c_bus() it looks like that cant happen after examiniing the call sites.

CID 19036 (#1 of 1): Copy into fixed size buffer (STRING_OVERFLOW)

1. fixed_size_dest: You might overrun the 48-character fixed-size string chan->adapter.name by copying name without checking the length.
2. parameter_as_source: Note: This defect has an elevated risk because the source argument is a parameter of the current function. 89 strcpy(chan->adapter.name, name);

Fix this warning by using strscpy() which will silence the warning and prevent any future buffer overflows should the names used to identify the channel become much longer.

Affected Software

References

• https://git.kernel.org/stable/c/055cdd2e7b992921424d4daaa285ced787fb205f
• https://git.kernel.org/stable/c/08dff482012758935c185532b1ad7d584785a86e
• https://git.kernel.org/stable/c/37a1a2e6eeeb101285cd34e12e48a881524701aa
• https://git.kernel.org/stable/c/41baa86b6c802cdc6ab8ff2d46c083c9be93de81
• https://git.kernel.org/stable/c/47e5533adf118afaf06d25a3e2aaaab89371b1c5
• https://git.kernel.org/stable/c/580e5d3815474b8349250c25c16416585a72c7fe
• https://git.kernel.org/stable/c/6a5226e544ac043bb2d8dc1bfe8920d02282f7cd
• https://git.kernel.org/stable/c/72dd5c46a152136712a55bf026a9aa8c1b12b60d
• https://git.kernel.org/stable/c/9ff2f7294ab0f011cd4d1b7dcd9a07d8fdf72834