CVE catalog
CVE-2021-20286
libnbd: CVE-2021-20286
- Severity
- Low · CVSS 2.7
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.14% · Oct 25, 2026
A flaw was found in libnbd 1.7.3. An assertion failure in nbd_unlocked_opt_go in ilb/opt.c may lead to denial of service.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libnbd | sid | 1.24.4-1 | fixed |
| Debian | libnbd | forky | 1.24.4-1 | fixed |
| Debian | libnbd | trixie | 1.22.2-1 | fixed |
| Debian | libnbd | bookworm | 1.14.2-1 | fixed |
| Ubuntu | libnbd | 20.04 | 1.0.3-1 | vulnerable |
| Ubuntu | libnbd | 20.04 | 1.2.1-2 | vulnerable |
| Ubuntu | libnbd | 20.04 | 1.2.2-1ubuntu2 | vulnerable |
| Opensuse | kubevirt | leap 15.3 | 0.40.0-5.11.2 | fixed |
| Opensuse | libnbd | tumbleweed | 1.9.3-1.2 | fixed |
| Suse | containerized-data-importer | linux enterprise module for containers 15 sp2 | 1.30.0-5.3.2 | fixed |
| Suse | kubevirt | linux enterprise module for containers 15 sp2 | 0.40.0-5.11.2 | fixed |
| Suse | kubevirt | linux enterprise module for containers 15 sp3 | 0.40.0-5.11.2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libnbd | source | sid | 1.6.2-1 | not yet assigned | Not reported | Not reported |
| Debian | libnbd | source | forky | 1.6.2-1 | not yet assigned | Not reported | Not reported |
| Debian | libnbd | source | trixie | 1.6.2-1 | not yet assigned | Not reported | Not reported |
| Debian | libnbd | source | bookworm | 1.6.2-1 | not yet assigned | Not reported | Not reported |
| Opensuse | kubevirt | rpm | leap 15.3 | 0.40.0-5.11.2 | Not reported | OPENSUSE-SU-2021:2274-1 | Not reported |
| Opensuse | libnbd | rpm | tumbleweed | 1.9.3-1.2 | Not reported | OPENSUSE-SU-2024:10961-1 | Not reported |
| Suse | containerized-data-importer | rpm | linux enterprise module for containers 15 sp2 | 1.30.0-5.3.2 | Not reported | SUSE-SU-2021:2274-1 | Not reported |
| Suse | kubevirt | rpm | linux enterprise module for containers 15 sp2 | 0.40.0-5.11.2 | Not reported | SUSE-SU-2021:2274-1 | Not reported |
| Suse | kubevirt | rpm | linux enterprise module for containers 15 sp3 | 0.40.0-5.11.2 | Not reported | SUSE-SU-2021:2274-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [libnbd0]Unknown
Source package: [libnbd]
Details (1)
1.25.7-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.9.3-1.2Version impact unknown
dsa · libnbd · opensuse · tumbleweed
- [libnbd-bash-completion]Unknown
Source package: [libnbd]
Details (1)
1.25.7-1.1· noarch · tumbleweedUnknown · Fixed:
1.9.3-1.2Version impact unknown
dsa · libnbd · opensuse · tumbleweed
- [libnbd-devel]Unknown
Source package: [libnbd]
Details (1)
1.25.7-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.9.3-1.2Version impact unknown
dsa · libnbd · opensuse · tumbleweed
- [nbdfuse]Unknown
Source package: [libnbd]
Details (1)
1.25.7-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.9.3-1.2Version impact unknown
dsa · libnbd · opensuse · tumbleweed
- [python3-libnbd]Unknown
Source package: [libnbd]
Details (1)
1.25.7-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.9.3-1.2Version impact unknown
dsa · libnbd · opensuse · tumbleweed
- [libnbd]Fixed
Source package: [libnbd]
Details (1)
1.25.7-1.1· x86_64 · tumbleweedFixed · Fixed:
1.9.3-1.2dsa · libnbd · opensuse · tumbleweed
[Debian 12 (Bookworm)]
- [libnbd0]Fixed
Source package: [libnbd]
Details (2)
1.14.2-1· amd64 · bookwormFixed · Fixed:
1.6.2-1dsa · libnbd · debian · bookworm; dsa · libnbd · debian · 12
1.14.2-1· arm64 · bookwormFixed · Fixed:
1.6.2-1dsa · libnbd · debian · bookworm; dsa · libnbd · debian · 12
- [libnbd-bin]Fixed
Source package: [libnbd]
Details (2)
1.14.2-1· amd64 · bookwormFixed · Fixed:
1.6.2-1dsa · libnbd · debian · bookworm; dsa · libnbd · debian · 12
1.14.2-1· arm64 · bookwormFixed · Fixed:
1.6.2-1dsa · libnbd · debian · bookworm; dsa · libnbd · debian · 12
- [libnbd-dev]Fixed
Source package: [libnbd]
Details (2)
1.14.2-1· amd64 · bookwormFixed · Fixed:
1.6.2-1dsa · libnbd · debian · bookworm; dsa · libnbd · debian · 12
1.14.2-1· arm64 · bookwormFixed · Fixed:
1.6.2-1dsa · libnbd · debian · bookworm; dsa · libnbd · debian · 12
- [libnbd-ocaml]Fixed
Source package: [libnbd]
Details (2)
1.14.2-1· amd64 · bookwormFixed · Fixed:
1.6.2-1dsa · libnbd · debian · bookworm; dsa · libnbd · debian · 12
1.14.2-1· arm64 · bookwormFixed · Fixed:
1.6.2-1dsa · libnbd · debian · bookworm; dsa · libnbd · debian · 12
- [libnbd-ocaml-dev]Fixed
Source package: [libnbd]
Details (2)
1.14.2-1· amd64 · bookwormFixed · Fixed:
1.6.2-1dsa · libnbd · debian · bookworm; dsa · libnbd · debian · 12
1.14.2-1· arm64 · bookwormFixed · Fixed:
1.6.2-1dsa · libnbd · debian · bookworm; dsa · libnbd · debian · 12
- [python3-libnbd]Fixed
Source package: [libnbd]
Details (2)
1.14.2-1· amd64 · bookwormFixed · Fixed:
1.6.2-1dsa · libnbd · debian · bookworm; dsa · libnbd · debian · 12
1.14.2-1· arm64 · bookwormFixed · Fixed:
1.6.2-1dsa · libnbd · debian · bookworm; dsa · libnbd · debian · 12
[Debian 13 (Trixie)]
- [libnbd0]Fixed
Source package: [libnbd]
Details (2)
1.22.2-1+b1· amd64 · trixieFixed · Fixed:
1.6.2-1dsa · libnbd · debian · 13
1.22.2-1+b1· arm64 · trixieFixed · Fixed:
1.6.2-1dsa · libnbd · debian · 13
- [libnbd-bin]Fixed
Source package: [libnbd]
Details (2)
1.22.2-1+b1· amd64 · trixieFixed · Fixed:
1.6.2-1dsa · libnbd · debian · 13
1.22.2-1+b1· arm64 · trixieFixed · Fixed:
1.6.2-1dsa · libnbd · debian · 13
- [libnbd-dev]Fixed
Source package: [libnbd]
Details (2)
1.22.2-1+b1· amd64 · trixieFixed · Fixed:
1.6.2-1dsa · libnbd · debian · 13
1.22.2-1+b1· arm64 · trixieFixed · Fixed:
1.6.2-1dsa · libnbd · debian · 13
- [libnbd-ocaml]Fixed
Source package: [libnbd]
Details (2)
1.22.2-1+b1· amd64 · trixieFixed · Fixed:
1.6.2-1dsa · libnbd · debian · 13
1.22.2-1+b1· arm64 · trixieFixed · Fixed:
1.6.2-1dsa · libnbd · debian · 13
- [libnbd-ocaml-dev]Fixed
Source package: [libnbd]
Details (2)
1.22.2-1+b1· amd64 · trixieFixed · Fixed:
1.6.2-1dsa · libnbd · debian · 13
1.22.2-1+b1· arm64 · trixieFixed · Fixed:
1.6.2-1dsa · libnbd · debian · 13
- [python3-libnbd]Fixed
Source package: [libnbd]
Details (2)
1.22.2-1+b1· amd64 · trixieFixed · Fixed:
1.6.2-1dsa · libnbd · debian · 13
1.22.2-1+b1· arm64 · trixieFixed · Fixed:
1.6.2-1dsa · libnbd · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2021_2274-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-20286]
- [https://osv.dev/vulnerability/SUSE-SU-2021:2274-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-20286]
- [https://osv.dev/vulnerability/openSUSE-SU-2021:2274-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:10961-1]
- [https://security-tracker.debian.org/tracker/CVE-2021-20286]
- [https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-20286.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]