CVE-2024-26774

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

State: Published
Severity: Not scored
Published: Apr 3, 2024
Updated: May 23, 2026
Reserved: Feb 19, 2024

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	83e80a6e3543f37f74c8e48a5f305b054b65ce2a to before 8b40eb2e716b503f7a4e1090815a17b1341b2150Affected 83e80a6e3543f37f74c8e48a5f305b054b65ce2a to before f32d2a745b02123258026e105a008f474f896d6aAffected 83e80a6e3543f37f74c8e48a5f305b054b65ce2a to before 8cf9cc602cfb40085967c0d140e32691c8b71cf3Affected 83e80a6e3543f37f74c8e48a5f305b054b65ce2a to before 993bf0f4c393b3667830918f9247438a8f6fdb5bAffected 398a0fdb38d9ab5e68023667cc5e6e3d109e2d6bAffected 5.19.12 to before 5.20Affected
LinuxLinux	6.0Affected before 6.0Not affected 6.1.80 through 6.1.Not affected 6.6.19 through 6.6.Not affected 6.7.7 through 6.7.*Not affected 6.8 and laterNot affected

Product

Versions

LinuxLinux

83e80a6e3543f37f74c8e48a5f305b054b65ce2a to before 8b40eb2e716b503f7a4e1090815a17b1341b2150Affected
83e80a6e3543f37f74c8e48a5f305b054b65ce2a to before f32d2a745b02123258026e105a008f474f896d6aAffected
83e80a6e3543f37f74c8e48a5f305b054b65ce2a to before 8cf9cc602cfb40085967c0d140e32691c8b71cf3Affected
83e80a6e3543f37f74c8e48a5f305b054b65ce2a to before 993bf0f4c393b3667830918f9247438a8f6fdb5bAffected
398a0fdb38d9ab5e68023667cc5e6e3d109e2d6bAffected
5.19.12 to before 5.20Affected

LinuxLinux

6.0Affected
before 6.0Not affected
6.1.80 through 6.1.*Not affected
6.6.19 through 6.6.*Not affected
6.7.7 through 6.7.*Not affected
6.8 and laterNot affected

References

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