QEMU: 9pfs: crash due to race condition in renaming files
Published Dec 13, 2018
4.7
MEDIUMCVSS 3.1
EPSS 0.40%
Description
v9fs_wstat in hw/9pfs/9p.c in QEMU allows guest OS users to cause a denial of service (crash) because of a race condition during file renaming.
Affected products
No data.
Configuration 1
Configuration 2
- 8.0
- 9.0
Configuration 3
- 29
Configuration 4
- 14.04
- 16.04
- 18.04
- 18.10
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
Not affected
Red Hat Enterprise Linux 7
qemu-kvm
Not affected
Red Hat Enterprise Linux 7
qemu-kvm-ma
Not affected
Red Hat Enterprise Linux 7
qemu-kvm-rhev
Not affected
Red Hat Enterprise Linux 8
qemu-kvm
Not affected
Red Hat OpenStack Platform 10 (Newton)
qemu-kvm-rhev
Not affected
Red Hat OpenStack Platform 12 (Pike)
qemu-kvm-rhev
Not affected
Red Hat OpenStack Platform 13 (Queens)
qemu-kvm-rhev
Not affected
Red Hat OpenStack Platform 14 (Rocky)
qemu-kvm-rhev
Not affected
Red Hat OpenStack Platform 8 (Liberty)
qemu-kvm-rhev
Not affected
Red Hat OpenStack Platform 9 (Mitaka)
qemu-kvm-rhev
Not affected
| 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 | Not affected | n/a |
| Red Hat Enterprise Linux 7 | qemu-kvm | Not affected | n/a |
| Red Hat Enterprise Linux 7 | qemu-kvm-ma | Not affected | n/a |
| Red Hat Enterprise Linux 7 | qemu-kvm-rhev | Not affected | n/a |
| Red Hat Enterprise Linux 8 | qemu-kvm | Not affected | n/a |
| Red Hat OpenStack Platform 10 (Newton) | qemu-kvm-rhev | Not affected | n/a |
| Red Hat OpenStack Platform 12 (Pike) | qemu-kvm-rhev | Not affected | n/a |
| Red Hat OpenStack Platform 13 (Queens) | qemu-kvm-rhev | Not affected | n/a |
| Red Hat OpenStack Platform 14 (Rocky) | qemu-kvm-rhev | Not affected | n/a |
| Red Hat OpenStack Platform 8 (Liberty) | qemu-kvm-rhev | Not affected | n/a |
| Red Hat OpenStack Platform 9 (Mitaka) | qemu-kvm-rhev | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:L
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
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 (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.40% (0.00403) | 32.16th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.40% (0.00403) | 31.87th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.03% (0.00032) | 5.97th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00062) | 28.60th | v3 (v2023.03.01) |
| Jul 2, 2024 | 0.06% (0.00062) | 26.90th | v3 (v2023.03.01) |
| Dec 7, 2023 | 0.06% (0.00062) | 24.89th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00045) | 12.26th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 22, 2023 | 1.28% (0.01282) | 68.05th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.32% (0.03317) | 66.60th | v1 |
| Jan 6, 2022 | 3.32% (0.03317) | 66.28th | v1 |
| Sep 1, 2021 | 3.32% (0.03317) | 81.62th | v1 |
| Apr 14, 2021 | 3.32% (0.03317) | 0.00th | v1 |
References (16)
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2018/11/26/1 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/106007 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-19489 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1653156 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/153326 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=1d20398694a3b67a388d955b7a945ba4aa90a8a8 x_refsource_CONFIRM
- https://lists.debian.org/debian-lts-announce/2019/01/msg00023.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CGCFIFSIWUREEQQOZDZFBYKWZHXCWBZN/ vendor-advisoryx_refsource_FEDORA
- https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg04489.html mailing-listx_refsource_MLISTMailing ListPatchVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-19489
- https://seclists.org/bugtraq/2019/May/76 mailing-listx_refsource_BUGTRAQMailing ListThird Party Advisory
- https://security-tracker.debian.org/tracker/CVE-2018-19489 x_refsource_CONFIRMThird Party Advisory
- https://usn.ubuntu.com/3923-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-19489
- https://www.debian.org/security/2019/dsa-4454 vendor-advisoryx_refsource_DEBIANThird Party Advisory
Change history (0)
No recorded changes yet.