A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-06 11:54:14 -04:00
Code Issues Projects Releases Packages Wiki Activity

fuse: check if copy_file_range() returns larger than requested size

Browse source 
commit e5203209b3935041dac541bc5b37efb44220cc0b upstream.

Just like write(), copy_file_range() should check if the return value is
less or equal to the requested number of bytes.

Reported-by: Chunsheng Luo <luochunsheng@ustc.edu>
Closes: https://lore.kernel.org/all/20250807062425.694-1-luochunsheng@ustc.edu/
Fixes: 88bc7d5097 ("fuse: add support for copy_file_range()")
Cc: <stable@vger.kernel.org> # v4.20
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Miklos Szeredi 2025-08-12 14:07:54 +02:00 • committed by Greg Kroah-Hartman
commit 8d63276628
1 changed files with 3 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

3
fs/fuse/file.c
View file

@ -3365,6 +3365,9 @@ static ssize_t __fuse_copy_file_range(struct file *file_in, loff_t pos_in,
fc->no_copy_file_range = 1;
err = -EOPNOTSUPP;
}
if (!err && outarg.size > len)
err = -EIO;
if (err)
goto out;