CVE-2024-43828
Description
In the Linux kernel, the following vulnerability has been resolved: ext4: fix infinite loop when replaying fast_commit When doing fast_commit replay an infinite loop may occur due to an uninitialized extent_status struct. ext4_ext_determine_insert_hole() does not detect the replay and calls ext4_es_find_extent_range(), which will return immediately without initializing the 'es' variable. Because 'es' contains garbage, an integer overflow may happen causing an infinite loop in this function, easily reproducible using fstest generic/039. This commit fixes this issue by unconditionally initializing the structure in function ext4_es_find_extent_range(). Thanks to Zhang Yi, for figuring out the real problem!
How to fix
- linux linux_kernel5.10.224, 5.15.165, 6.1.103, 6.6.44, 6.10.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.10 ≤ v < 5.10.224, 5.11 ≤ v < 5.15.165, 5.16 ≤ v < 6.1.103, 6.2 ≤ v < 6.6.44, 6.7 ≤ v < 6.10.3 | 5.10.224, 5.15.165, 6.1.103, 6.6.44, 6.10.3 |
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