Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | libnbd | libnbd 1.7.3 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libnbd | 1.6.2-1 | — |
| Debian 13 | libnbd | 1.6.2-1 | — |
| Debian 12 | libnbd | 1.6.2-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | libnbd | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | kubevirt | 0.40.0-5.11.2 | SUSE-SU-2021:2274-1 |
| SLES 15 SP2 | containerized-data-importer | 1.30.0-5.3.2 | SUSE-SU-2021:2274-1 |
| SLES 15 SP2 | kubevirt | 0.40.0-5.11.2 | SUSE-SU-2021:2274-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libnbd | 1.9.3-1.2 | openSUSE-SU-2024:10961-1 |
| openSUSE Leap 15.3 | kubevirt | 0.40.0-5.11.2 | openSUSE-SU-2021:2274-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | libnbd | 1.10.5-r0 | — |
| Alpine v3.23 | libnbd | 1.10.5-r0 | — |
| Alpine v3.22 | libnbd | 1.10.5-r0 | — |
| Alpine v3.21 | libnbd | 1.10.5-r0 | — |
| Alpine v3.20 | libnbd | 1.10.5-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | libnbd | 1.12.1-1 | — |
Advisories 3
- openSUSE-SU-2021:2274-1 Security update for kubevirt SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10961-1 libnbd-1.9.3-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2274-1 Security update for kubevirt SUSE / openSUSE Security Updates · Feb 4, 2026