Qemu: rng-random: arbitrary stack based allocation leading to corruption
Published Apr 7, 2016
6.5
MEDIUMCVSS 3.1
EPSS 0.39%
Description
QEMU, when built with the Pseudo Random Number Generator (PRNG) back-end support, allows local guest OS users to cause a denial of service (process crash) via an entropy request, which triggers arbitrary stack based allocation and memory corruption.
Affected products
No data.
Configuration 2
- 12.04
- 14.04
- 15.10
- 16.04
Configuration 3
- 8.0
No data.
Red Hat Enterprise Linux 5
kvm
Not affected
Red Hat Enterprise Linux 5
xen
Not affected
Red Hat Enterprise Linux 6
qemu-kvm
Will not fix
Red Hat Enterprise Linux 7
qemu-kvm
Will not fix
Red Hat Enterprise Linux 7
qemu-kvm-rhev
Will not fix
Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)
qemu-kvm-rhev
Will not fix
Red Hat Enterprise Linux OpenStack Platform 6 (Juno)
qemu-kvm-rhev
Will not fix
Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)
qemu-kvm-rhev
Will not fix
Red Hat OpenStack Platform 8 (Liberty)
qemu-kvm-rhev
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kvm | Not affected | n/a |
| Red Hat Enterprise Linux 5 | xen | Not affected | n/a |
| Red Hat Enterprise Linux 6 | qemu-kvm | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | qemu-kvm | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | qemu-kvm-rhev | Will not fix | n/a |
| Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) | qemu-kvm-rhev | Will not fix | n/a |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) | qemu-kvm-rhev | Will not fix | n/a |
| Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) | qemu-kvm-rhev | Will not fix | n/a |
| Red Hat OpenStack Platform 8 (Liberty) | qemu-kvm-rhev | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This has been rated as having Low security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:M/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 | 0.39% (0.00393) | 31.09th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.40% (0.00397) | 31.21th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.12% (0.00124) | 29.16th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00062) | 28.60th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.06% (0.00062) | 26.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00062) | 24.59th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.10% (0.01104) | 54.09th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.10% (0.01104) | 52.45th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.10% (0.01104) | 50.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.10% (0.01104) | 28.85th | v2 (v2022.01.01) |
References (11)
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=60253ed1e6ec6d8e5ef2efe7bf755f475dce9956 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2016/03/04/1 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/03/07/4 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/84134 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-2974-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2016-2858 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1314676 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-2858
- https://security.gentoo.org/glsa/201604-01 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2016-2858
Change history (0)
No recorded changes yet.