CVE-2021-47642video: fbdev: nvidiafb: Use strscpy() to prevent buffer overflow

Official description

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 can't 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 packages & fixed versions

Affected products (as reported)

References

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