Unrated severityNVD Advisory· Published Nov 27, 2023· Updated Nov 20, 2025
Libnbd: malicious nbd server may crash libnbd
CVE-2023-5871
Description
A flaw was found in libnbd, due to a malicious Network Block Device (NBD), a protocol for accessing Block Devices such as hard disks over a Network. This issue may allow a malicious NBD server to cause a Denial of Service.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
15cpe:/a:redhat:enterprise_linux:9::appstream+ 3 more
- cpe:/a:redhat:enterprise_linux:9::appstreamrange: 0:1.18.1-3.el9
- cpe:/o:redhat:enterprise_linux:6
- cpe:/o:redhat:enterprise_linux:7
- cpe:/o:redhat:enterprise_linux:8
- osv-coords10 versionspkg:rpm/almalinux/libnbdpkg:rpm/almalinux/libnbd-bash-completionpkg:rpm/almalinux/libnbd-develpkg:rpm/almalinux/nbdfusepkg:rpm/almalinux/ocaml-libnbdpkg:rpm/almalinux/ocaml-libnbd-develpkg:rpm/almalinux/python3-libnbdpkg:rpm/opensuse/libnbd&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/libnbd&distro=openSUSE%20Leap%2015.5pkg:rpm/opensuse/libnbd&distro=openSUSE%20Tumbleweed
< 1.18.1-3.el9+ 9 more
- (no CPE)range: < 1.18.1-3.el9
- (no CPE)range: < 1.18.1-3.el9
- (no CPE)range: < 1.18.1-3.el9
- (no CPE)range: < 1.18.1-3.el9
- (no CPE)range: < 1.18.1-3.el9
- (no CPE)range: < 1.18.1-3.el9
- (no CPE)range: < 1.18.1-3.el9
- (no CPE)range: < 1.18.1-150300.8.18.1
- (no CPE)range: < 1.18.1-150300.8.18.1
- (no CPE)range: < 1.18.1-2.1
Patches
Vulnerability mechanics
References
4- access.redhat.com/errata/RHSA-2024:2204mitrevendor-advisoryx_refsource_REDHAT
- access.redhat.com/security/cve/CVE-2023-5871mitrevdb-entryx_refsource_REDHAT
- bugzilla.redhat.com/show_bug.cgimitreissue-trackingx_refsource_REDHAT
- lists.libguestfs.org/archives/list/guestfs@lists.libguestfs.org/thread/PFVUCMPFQUDC23JXSCUUPXIGDZ7XCFMD/mitre
News mentions
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