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The set_fat function in fat.c in dosfstools before 4.0 might allow attackers to corrupt a FAT12 filesystem or cause a denial of service (invalid memory read and crash) by writing an odd number of clusters to the third to last entry on a FAT12 filesystem, which triggers an "off-by-two error."
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade dosfstools | Mar 31, 2017 | May 15, 2016 |
| Huawei Euleros 2_0_sp2 | — | Upgrade dosfstools | Dec 4, 2019 | Jun 3, 2016 |
| Huawei Euleros 2_0_sp3 | — | Upgrade dosfstools | Dec 18, 2019 | Jun 3, 2016 |
| Huawei Euleros 2_0_sp5 | — | Upgrade dosfstools | Sep 24, 2019 | Jun 3, 2016 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 14, 2016 |
| Suse | — | Upgrade dosfstools | Jun 3, 2016 | Jun 3, 2016 |
| Ubuntu | — | Upgrade dosfstools | May 31, 2016 | May 31, 2016 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Jun 3, 2016 |
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