1. 15 Jan, 2024 1 commit
  2. 13 Jan, 2024 1 commit
    • Gao Xiang's avatar
      erofs: fix inconsistent per-file compression format · 118a8cf5
      Gao Xiang authored
      EROFS can select compression algorithms on a per-file basis, and each
      per-file compression algorithm needs to be marked in the on-disk
      superblock for initialization.
      
      However, syzkaller can generate inconsistent crafted images that use
      an unsupported algorithmtype for specific inodes, e.g. use MicroLZMA
      algorithmtype even it's not set in `sbi->available_compr_algs`.  This
      can lead to an unexpected "BUG: kernel NULL pointer dereference" if
      the corresponding decompressor isn't built-in.
      
      Fix this by checking against `sbi->available_compr_algs` for each
      m_algorithmformat request.  Incorrect !erofs_sb_has_compr_cfgs preset
      bitmap is now fixed together since it was harmless previously.
      
      Reported-by: <bugreport@ubisectech.com>
      Fixes: 8f899262 ("erofs: get compression algorithms directly on mapping")
      Fixes: 622ceadd ("erofs: lzma compression support")
      Reviewed-by: default avatarYue Hu <huyue2@coolpad.com>
      Link: https://lore.kernel.org/r/20240113150602.1471050-1-hsiangkao@linux.alibaba.comSigned-off-by: default avatarGao Xiang <hsiangkao@linux.alibaba.com>
      118a8cf5
  3. 07 Jan, 2024 1 commit
  4. 06 Jan, 2024 2 commits
  5. 05 Jan, 2024 25 commits
  6. 04 Jan, 2024 10 commits