CVE-2024-43828

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> ext4: fix infinite loop when replaying fast_commit<br /> <br /> When doing fast_commit replay an infinite loop may occur due to an<br /> uninitialized extent_status struct. ext4_ext_determine_insert_hole() does<br /> not detect the replay and calls ext4_es_find_extent_range(), which will<br /> return immediately without initializing the &amp;#39;es&amp;#39; variable.<br /> <br /> Because &amp;#39;es&amp;#39; contains garbage, an integer overflow may happen causing an<br /> infinite loop in this function, easily reproducible using fstest generic/039.<br /> <br /> This commit fixes this issue by unconditionally initializing the structure<br /> in function ext4_es_find_extent_range().<br /> <br /> Thanks to Zhang Yi, for figuring out the real problem!