Messages in this thread | | | Subject | Re: [PATCH 3/3] erofs: handle corrupted images whose decompressed size less than it'd be | From | Chao Yu <> | Date | Tue, 3 Mar 2020 17:51:19 +0800 |
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On 2020/2/26 10:30, Gao Xiang wrote: > As Lasse pointed out, "Looking at fs/erofs/decompress.c, > the return value from LZ4_decompress_safe_partial is only > checked for negative value to catch errors. ... So if > I understood it correctly, if there is bad data whose > uncompressed size is much less than it should be, it can > leave part of the output buffer untouched and expose the > previous data as the file content. " > > Let's fix it now. > > Cc: Lasse Collin <lasse.collin@tukaani.org> > Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Thanks,
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