dosfstools: Heap-buffer-overflows in read_fat() and get_fat() functions
Published Jun 3, 2016
6.2
MEDIUMCVSS 3.0
EPSS 0.45%
Description
The read_boot function in boot.c in dosfstools before 4.0 allows attackers to cause a denial of service (crash) via a crafted filesystem, which triggers a heap-based buffer overflow in the (1) read_fat function or an out-of-bounds heap read in (2) get_fat function.
Affected products
No data.
Configuration 1
- ≤ 3.0.28
Configuration 3
- 12.04
- 14.04
- 15.10
- 16.04
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 | 0.45% (0.00448) | 36.59th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.45% (0.00451) | 35.64th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.12% (0.00122) | 28.81th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.24% (0.00238) | 62.78th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.24% (0.00238) | 62.06th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.24% (0.00238) | 60.06th | 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-2016-4804 Vendor Advisory
- https://blog.fuzzing-project.org/44-dosfstools-fsck.vfat-Several-invalid-memory-accesses.html x_refsource_MISCPatch
- https://bugzilla.redhat.com/show_bug.cgi?id=1336745 Issue Tracking
- https://github.com/dosfstools/dosfstools/commit/e8eff147e9da1185f9afd5b25948153a3b97cf52 x_refsource_CONFIRM
- https://github.com/dosfstools/dosfstools/issues/25 x_refsource_CONFIRMPatchVendor Advisory
- https://github.com/dosfstools/dosfstools/issues/26 x_refsource_CONFIRMPatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/05/msg00028.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2016-4804
- https://www.cve.org/CVERecord?id=CVE-2016-4804
Change history (0)
No recorded changes yet.