LadybirdBrowser/ladybird
1
1
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2024-09-21 10:19:03 +03:00
Code Issues Packages Projects Releases Wiki Activity

Kernel-VFS: Fixed kernel crash if parent custody is null

Browse Source 
In VFS::rename, if new_path is equal to '/', then, parent custody is
set to null.
VFS::rename would then use parent custody without checking it first.

Fixed VFS::rename to check both old and new path parent custody
before actually using them.
This commit is contained in:
r-paiva 2021-05-06 18:35:34 +01:00 committed by Andreas Kling
parent 90b6f999e5
commit 293a5c2b49
Notes: sideshowbarker 2024-07-18 18:30:58 +09:00 
Author: https://github.com/r-paiva
Commit: https://github.com/SerenityOS/serenity/commit/293a5c2b495
Pull-request: https://github.com/SerenityOS/serenity/pull/6899
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Kernel/FileSystem/VirtualFileSystem.cpp
View File

@ -498,6 +498,10 @@ KResult VFS::rename(StringView old_path, StringView new_path, Custody& base)
return new_custody_or_error.error();
}
if (!old_parent_custody || !new_parent_custody) {
return EPERM;
}
auto& old_parent_inode = old_parent_custody->inode();
auto& new_parent_inode = new_parent_custody->inode();