In the Linux kernel, the following vulnerability has been resolved:

ext4: avoid dividing by 0 in mb_update_avg_fragment_size() when block bitmap corrupt

Determine if bb_fragments is 0 instead of determining bb_free to eliminate
the risk of dividing by zero when the block bitmap is corrupted.

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-26774
• https://git.kernel.org/stable/c/687061cfaa2ac3095170e136dd9c29a4974f41d4
• https://git.kernel.org/stable/c/8b40eb2e716b503f7a4e1090815a17b1341b2150
• https://git.kernel.org/stable/c/8cf9cc602cfb40085967c0d140e32691c8b71cf3
• https://git.kernel.org/stable/c/993bf0f4c393b3667830918f9247438a8f6fdb5b
• https://git.kernel.org/stable/c/f32d2a745b02123258026e105a008f474f896d6a