CVE-2023-5215 · cross-distro fix matrix

CVE-2023-5215: A flaw was found in libnbd. A server can reply with a block size larger than 2^63 (the NBD spec states the size is a 64-bit unsigned value). This issue could lead to an application crash or other unintended behavior for NBD clients that doesn't treat the return value of the nbd_get_size() function c

Affects 4 Linux releases across 4 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2023-5215 has a known fix. Run the listed command on that distro to remediate.

Debian trixie

Source: Debian Security Tracker

libnbd→ fixed in1.16.5-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libnbd
```

Alpine v3.20

Source: Alpine secdb

libnbd→ fixed in1.18.0-r0
```
apk update && apk add --upgrade libnbd
```

Alpine v3.21

Source: Alpine secdb

libnbd→ fixed in1.18.0-r0
```
apk update && apk add --upgrade libnbd
```

Alpine edge

Source: Alpine secdb

libnbd→ fixed in1.18.0-r0
```
apk update && apk add --upgrade libnbd
```

Are YOU affected by CVE-2023-5215?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

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