CVE-2024-26774: ext4: avoid dividing by 0 in mb_update_avg_fragment_size() when block bitmap corrupt
First published: Wed Apr 03 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | <=5.10.223-1<=5.10.226-1 | 6.1.115-1 6.1.112-1 6.11.5-1 6.11.7-1 |
| redhat/kernel | <5.15.150 | 5.15.150 |
| redhat/kernel | <6.1.80 | 6.1.80 |
| redhat/kernel | <6.6.19 | 6.6.19 |
| redhat/kernel | <6.7.7 | 6.7.7 |
| redhat/kernel | <6.8 | 6.8 |
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Reference Links
- 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
- https://launchpad.net/bugs/cve/CVE-2024-26774
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26774
- https://nvd.nist.gov/vuln/detail/CVE-2024-26774
- https://security-tracker.debian.org/tracker/CVE-2024-26774
- https://ubuntu.com/security/CVE-2024-26774
- https://git.kernel.org/linus/993bf0f4c393b3667830918f9247438a8f6fdb5b
- https://access.redhat.com/security/cve/CVE-2024-26774
- https://lore.kernel.org/linux-cve-announce/2024040308-CVE-2024-26774-52d9@gregkh/T
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2273235
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2273234
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