ocaml: Integer overflow in byterun/bigarray.c:caml_ba_deserialize() allows remote attackers to cause a denial of service or other unspecified impact
Published Apr 6, 2018
9.8
CRITICALCVSS 3.0
EPSS 4.14%
Description
The caml_ba_deserialize function in byterun/bigarray.c in the standard library in OCaml 4.06.0 has an integer overflow which, in situations where marshalled data is accepted from an untrusted source, allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via a crafted object.
Affected products
No data.
No data.
Red Hat Enterprise Linux 6
ocaml
Will not fix
Red Hat Enterprise Linux 7
ocaml
Fix deferred
Red Hat Enterprise Linux 8
ocaml
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | ocaml | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | ocaml | Fix deferred | n/a |
| Red Hat Enterprise Linux 8 | ocaml | Not affected | 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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
AV:N/AC:L/Au:N/C:P/I:P/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
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.14% (0.04137) | 90.52th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.22% (0.04216) | 89.66th | v5 (v2026.06.15) |
| Apr 13, 2026 | 8.12% (0.08115) | 92.16th | v4 (v2025.03.14) |
| Mar 25, 2026 | 11.73% (0.11731) | 93.63th | v4 (v2025.03.14) |
| Dec 3, 2025 | 3.59% (0.03589) | 87.39th | v4 (v2025.03.14) |
| Mar 30, 2025 | 1.12% (0.01122) | 76.29th | v4 (v2025.03.14) |
| Mar 29, 2025 | 5.94% (0.05943) | 83.97th | v4 (v2025.03.14) |
| Jul 20, 2024 | 1.33% (0.01333) | 86.20th | v3 (v2023.03.01) |
| Jul 10, 2024 | 1.33% (0.01333) | 86.16th | v3 (v2023.03.01) |
| Apr 21, 2024 | 1.28% (0.01280) | 85.55th | v3 (v2023.03.01) |
| Feb 14, 2024 | 1.13% (0.01130) | 84.22th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.11% (0.01115) | 82.31th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.07% (0.02065) | 79.84th | v2 (v2022.01.01) |
| Jan 1, 2023 | 2.07% (0.02065) | 79.14th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.88% (0.01885) | 75.34th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.88% (0.01885) | 54.51th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.40% (0.01398) | 32.11th | v1 |
| Jan 6, 2022 | 1.40% (0.01398) | 31.37th | v1 |
| Sep 1, 2021 | 1.40% (0.01398) | 70.96th | v1 |
| Apr 14, 2021 | 1.40% (0.01398) | 0.00th | v1 |
References (6)
- https://access.redhat.com/security/cve/CVE-2018-9838 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1565468 Issue Tracking
- https://caml.inria.fr/mantis/view.php?id=7765 x_refsource_MISCIssue TrackingVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-9838
- https://security.gentoo.org/glsa/202007-48 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2018-9838
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2018-9838 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1565468 | Issue Tracking | |
| https://caml.inria.fr/mantis/view.php?id=7765 | x_refsource_MISCIssue TrackingVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-9838 | ||
| https://security.gentoo.org/glsa/202007-48 | vendor-advisoryx_refsource_GENTOO | |
| https://www.cve.org/CVERecord?id=CVE-2018-9838 |
Change history (0)
No recorded changes yet.