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CVE-2010-2071

17
FAUCET Score

CVE-2010-2071 describes a privilege escalation vulnerability in the btrfs filesystem within the Linux kernel versions 2.6.34 and earlier. This flaw allows local users to bypass file permissions by setting arbitrary Access Control Lists (ACLs) on files they do not own, due to a missing ownership check in the btrfs_xattr_set_acl function. With a CVSS score of 4.6, this vulnerability has a low attack complexity and requires local access, potentially leading to partial confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.34CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.6MEDIUM

AV:L/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.47%
Probability of exploitation in next 30 days
EPSS Percentile
38.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0047 is in the 71st percentile among its peer group of 3,052 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2010-2071

kernel: btrfs: prevent users from setting ACLs on files they do not own

References

git.kernel.org
lkml.org / lkml/2010/5/17/544
ExploitPatchThird Party Advisory
openwall.com / lists/oss-security/2010/06/11/3
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2010/06/14/2
Mailing ListThird Party Advisory