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

scsi: mpi3mr: Fix issues in mpi3mr_get_all_tgt_info()

The function mpi3mr_get_all_tgt_info() has four issues:

1. It calculates valid entry length in alltgt_info assuming the header part
   of the struct mpi3mr_device_map_info would equal to sizeof(u32). The
   correct size is sizeof(u64).

2. When it calculates the valid entry length kern_entrylen, it excludes one
   entry by subtracting 1 from num_devices.

3. It copies num_device by calling memcpy(). Substitution is enough.

4. It does not specify the calculated length to sg_copy_from_buffer().
   Instead, it specifies the payload length which is larger than the
   alltgt_info size. It causes "BUG: KASAN: slab-out-of-bounds".

Fix the issues by using the correct header size, removing the subtraction
from num_devices, replacing the memcpy() with substitution and specifying
the correct length to sg_copy_from_buffer().

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-53320
• https://git.kernel.org/stable/c/2f3d3fa5b8ed7d3b147478f42b00b468eeb1ecd2
• https://git.kernel.org/stable/c/8ba997b22f2cd5d29aad8c39f6201f7608ed0c04
• https://git.kernel.org/stable/c/fb428a2005fc1260d18b989cc5199f281617f44d