Re: [f2fs-dev] [PATCH] f2fs: validate dentry name length before lookup compares it
Chao Yu via Linux-f2fs-devel <[email protected]>
| Newsgroups | net.sourceforge.lists.linux-f2fs-devel,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
On 6/4/26 00:11, Samuel Moelius wrote: > The f2fs dentry lookup path can use the on-disk name length before > checking that the name fits in the dentry filename area. A corrupted > dentry can then make lookup read beyond the filename slots. > > The bounds check needs to happen before any comparison that consumes > the name length from disk. > > Reject dentries with invalid name lengths before comparing their names. Will be better to merge two patch into one: f2fs: validate inline dentry name lengths before conversion f2fs: validate dentry name length before lookup compares it > > Assisted-by: Codex:gpt-5.5-cyber-preview > Signed-off-by: Samuel Moelius <[email protected]> Anyway, this patch looks good to me. Reviewed-by: Chao Yu <[email protected]> Thanks, _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel