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CVE-2026-31451 ext4: replace BUG_ON with proper error handling in ext4_read_inline_folio
Description
In the Linux kernel, the following vulnerability has been resolved: ext4: replace BUG_ON with proper error handling in ext4_read_inline_folio Replace BUG_ON() with proper error handling when inline data size exceeds PAGE_SIZE. This prevents kernel panic and allows the system to continue running while properly reporting the filesystem corruption. The error is logged via ext4_error_inode(), the buffer head is released to prevent memory leak, and -EFSCORRUPTED is returned to indicate filesystem corruption.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux 7.0 | earliest → < 7.0 | 7.0 |
| Linux 6.19 | earliest → < 6.19.11 | 6.19.11 |
| Linux 6.18 | earliest → < 6.18.21 | 6.18.21 |
| Linux 6.12 | earliest → < 6.12.80 | 6.12.80 |
| Linux 6.6 | earliest → < 6.6.131 | 6.6.131 |
| Linux 6.1 | earliest → < 6.1.177 | 6.1.177 |
| Linux 5.15 | earliest → < 5.15.211 | 5.15.211 |
| Linux 5.10 | earliest → < 5.10.260 | 5.10.260 |
| Linux | 3.8 | No fix stated |
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| Product | Affected versions | Fixed in |
|---|---|---|
| SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | Versions not published |
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