nbd-server.c in Network Block Device (nbd-server) 2.9.21 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by causing a negotiation failure, as demonstrated by specifying a name for a non-existent export
Published May 31, 2011
5.0
MEDIUMCVSS 2.0
EPSS 2.52%
Description
nbd-server.c in Network Block Device (nbd-server) 2.9.21 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by causing a negotiation failure, as demonstrated by specifying a name for a non-existent export.
Affected products
No data.
- ≤ 2.9.21
No data.
No Red Hat product state for this CVE.
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.
No CVSS v3.0 score for this CVE.
AV:N/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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.52% (0.02524) | 84.30th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.52% (0.02524) | 82.76th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.38% (0.01382) | 79.00th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.35% (0.02351) | 90.18th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.35% (0.02351) | 88.06th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
No CWE recorded.
References (6)
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=627042. x_refsource_MISC
- http://nbd.git.sourceforge.net/git/gitweb.cgi?p=nbd/nbd%3Ba=commitdiff%3Bh=ebbbe0b3ce5393fa42a259f5e03d549508586aaa x_refsource_CONFIRM
- http://security.gentoo.org/glsa/glsa-201206-35.xml vendor-advisoryx_refsource_GENTOO
- http://www.openwall.com/lists/oss-security/2011/05/17/1 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/47884 vdb-entryx_refsource_BID
- https://exchange.xforce.ibmcloud.com/vulnerabilities/67502 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=627042. | x_refsource_MISC | |
| http://nbd.git.sourceforge.net/git/gitweb.cgi?p=nbd/nbd%3Ba=commitdiff%3Bh=ebbbe0b3ce5393fa42a259f5e03d549508586aaa | x_refsource_CONFIRM | |
| http://security.gentoo.org/glsa/glsa-201206-35.xml | vendor-advisoryx_refsource_GENTOO | |
| http://www.openwall.com/lists/oss-security/2011/05/17/1 | mailing-listx_refsource_MLIST | |
| http://www.securityfocus.com/bid/47884 | vdb-entryx_refsource_BID | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/67502 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.