libvirt: Null pointer dereference when updating storage size on empty drives
Published Aug 22, 2018
7.7
HIGHCVSS 3.0
EPSS 1.53%
Description
A NULL pointer deference flaw was found in the way libvirt from 2.5.0 to 3.0.0 handled empty drives. A remote authenticated attacker could use this flaw to crash libvirtd daemon resulting in denial of service.
Affected products
-
- Version from 2.5.0 to 3.0.0StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| The libvirt Project | Libvirt | n/a |
|
No data.
Red Hat Enterprise Linux 5
libvirt
Not affected
Red Hat Enterprise Linux 6
libvirt
Not affected
Red Hat Enterprise Linux 7
libvirt
Not affected
Red Hat Enterprise Virtualization 3
libvirt
Not affected
Red Hat Enterprise Virtualization 3
mingw-virt-viewer
Not affected
Red Hat Storage 3
libvirt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | libvirt | Not affected | n/a |
| Red Hat Enterprise Linux 6 | libvirt | Not affected | n/a |
| Red Hat Enterprise Linux 7 | libvirt | Not affected | n/a |
| Red Hat Enterprise Virtualization 3 | libvirt | Not affected | n/a |
| Red Hat Enterprise Virtualization 3 | mingw-virt-viewer | Not affected | n/a |
| Red Hat Storage 3 | libvirt | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect libvirt as shipped with Red Hat Enterprise Linux 5, 6 and 7 as it does not contain the affected code.
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:L/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
AV:N/AC:L/Au:S/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 v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.53% (0.01529) | 73.80th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.53% (0.01529) | 73.59th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.13% (0.00132) | 48.71th | v3 (v2023.03.01) |
| Jul 1, 2024 | 0.13% (0.00132) | 48.53th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.13% (0.00125) | 47.28th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.13% (0.00125) | 45.27th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.98% (0.00976) | 26.54th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.98% (0.00976) | 0.00th | v1 |
References (6)
- https://access.redhat.com/security/cve/CVE-2017-2635 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1427090 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2635 x_refsource_CONFIRMIssue Tracking
- https://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=c3de387380f6057ee0e46cd9f2f0a092e8070875 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2017-2635
- https://www.cve.org/CVERecord?id=CVE-2017-2635
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2017-2635 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1427090 | Issue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2635 | x_refsource_CONFIRMIssue Tracking | |
| https://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=c3de387380f6057ee0e46cd9f2f0a092e8070875 | x_refsource_CONFIRM | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-2635 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-2635 |
Change history (0)
No recorded changes yet.