[PATCH v0 0/1] exfat: set s_maxbytes

[David Timber <dxdt@dev.snart.me>]

Possible security impact when a file in an exFAT volume larger than
16TB(MAX_LFS_FILESIZE) is mmap()'d on 32-bit machines due to potential
undefined behaviour in filemap. Though the attack surface is quite
limited as mmap() is rarely used with exFAT. The comment on the macro
definition is pretty much self-explanatory.

The use of unsigned int became apparently evil ever since Linux
switched its own loff_t. Integer overflows could go undetected.

David Timber (1):
  exfat: fix s_maxbytes

 fs/exfat/exfat_raw.h |  1 +
 fs/exfat/file.c      |  1 +
 fs/exfat/super.c     | 11 ++++++++---
 3 files changed, 10 insertions(+), 3 deletions(-)

-- 
2.53.0.1.ga224b40d3f.dirty