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CVE-2011-1173

19
FAUCET Score

CVE-2011-1173 describes an information disclosure vulnerability in the Linux kernel's Econet networking subsystem (specifically, the econet_sendmsg function in net/econet/af_econet.c) affecting versions prior to 2.6.39 on x86_64 platforms. This flaw allows remote attackers to obtain potentially sensitive information from kernel stack memory by reading uninitialized data within Acorn Universal Networking (AUN) packets. With a CVSS score of 5.0 (AV:N/AC:L/Au:N/C:P/I:N/A:N), it represents a medium-severity risk, indicating remote access with low attack complexity leading to partial confidentiality impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, suggesting it is not widely targeted.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.6.39CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.61%
Probability of exploitation in next 30 days
EPSS Percentile
83.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0261 is in the 76th percentile among its peer group of 23,705 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-2011-1173

CVE-2011-1173

References

git.kernel.org
marc.info
PatchThird Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
securityreason.com / securityalert/8279
Third Party Advisory
kernel.org / pub/linux/kernel/v2.6/ChangeLog-2.6.39
Release NotesVendor Advisory
openwall.com / lists/oss-security/2011/03/18/15
Mailing ListPatchThird Party Advisory
openwall.com / lists/oss-security/2011/03/21/1
Mailing ListPatchThird Party Advisory
openwall.com / lists/oss-security/2011/03/21/4
Mailing ListPatchThird Party Advisory