dosfstools: Off-by-2 error leading to corruption in FAT12
Published Jun 3, 2016
6.2
MEDIUMCVSS 3.0
EPSS 0.42%
Description
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."
Affected products
No data.
Configuration 1
- 12.04
- 14.04
- 15.10
- 16.04
Configuration 3
- ≤ 3.0.28
No data.
Red Hat Enterprise Linux 5
dosfstools
Will not fix
Red Hat Enterprise Linux 6
dosfstools
Will not fix
Red Hat Enterprise Linux 7
dosfstools
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | dosfstools | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | dosfstools | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | dosfstools | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:L/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.42% (0.00423) | 34.25th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.43% (0.00426) | 33.80th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.09% (0.00091) | 23.71th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.22% (0.00224) | 61.60th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.21% (0.00214) | 59.63th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.21% (0.00214) | 57.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.54% (0.01537) | 74.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
References (13)
- http://lists.opensuse.org/opensuse-updates/2016-06/msg00001.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2016-09/msg00014.html vendor-advisoryx_refsource_SUSE
- http://www.securityfocus.com/bid/90311 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-2986-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-8872 Vendor Advisory
- https://blog.fuzzing-project.org/44-dosfstools-fsck.vfat-Several-invalid-memory-accesses.html x_refsource_MISCVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1336739 Issue Tracking
- https://github.com/dosfstools/dosfstools/commit/07908124838afcc99c577d1d3e84cef2dbd39cb7 x_refsource_CONFIRM
- https://github.com/dosfstools/dosfstools/issues/12 x_refsource_CONFIRMVendor Advisory
- https://github.com/dosfstools/dosfstools/releases/tag/v4.0 x_refsource_CONFIRMPatch
- https://lists.debian.org/debian-lts-announce/2020/05/msg00028.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2015-8872
- https://www.cve.org/CVERecord?id=CVE-2015-8872
Change history (0)
No recorded changes yet.