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CVE-2011-0463

14
FAUCET Score

CVE-2011-0463 is a local information disclosure vulnerability affecting the Oracle Cluster File System 2 (OCFS2) subsystem in the Linux kernel, specifically versions before 2.6.39-rc1, including Canonical and Ubuntu distributions. The flaw allows local users to read uninitialized disk locations due to improper handling of holes crossing page boundaries. With a CVSS score of 2.1, this vulnerability has low attack complexity and requires local access, resulting in a potential impact of information disclosure (C:P). There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.38.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
8.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.1LOW

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.52%
Probability of exploitation in next 30 days
EPSS Percentile
41.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0052 is in the 76th percentile among its peer group of 2,096 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.6 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-2011-0463Moderate

kernel: ocfs2_prepare_page_for_write function does not properly handle holes that cross page boundaries leads to information exposure

Feb 17, 2011

References

git.kernel.org
oss.oracle.com / pipermail/ocfs2-devel/2011-February/007846.html
ExploitPatchThird Party Advisory
bugzilla.novell.com / show_bug.cgi
ExploitIssue TrackingThird Party Advisory
secunia.com / advisories/43966
Third Party Advisory
kernel.org / pub/linux/kernel/v2.6/testing/ChangeLog-2.6.39-rc1
Release NotesVendor Advisory
ubuntu.com / usn/USN-1146-1
Third Party Advisory