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CVE-2009-2768

24
FAUCET Score

CVE-2009-2768 describes a NULL pointer dereference vulnerability in the Linux kernel's flat subsystem (fs/binfmt_flat.c) affecting versions prior to 2.6.31-rc6. A local attacker can trigger a system crash (Denial of Service) and potentially other unspecified impacts by executing a specially crafted shared flat binary, leading to an uninitialized credential pointer access. This vulnerability has a CVSS v3.1 score of 7.8 (High), indicating a high severity with local access, low attack complexity, and high impact on confidentiality, integrity, and availability. 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
< 2.6.31CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
2.6.31CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.31:rc1:*:*:*:*:*:*
2.6.31CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.31:rc2:*:*:*:*:*:*
2.6.31CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.31:rc3:*:*:*:*:*:*
2.6.31CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.31:rc4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
33.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 73rd percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2009-2768

CVE-2009-2768

References

git.kernel.org
Broken Link
lkml.org / lkml/2009/6/22/91
Mailing ListPatchThird Party Advisory
secunia.com / advisories/36278
Broken Link
exchange.xforce.ibmcloud.com / vulnerabilities/52909
Third Party AdvisoryVDB Entry
thread.gmane.org / gmane.linux.hardware.blackfin.kernel.devel/1905
Broken Link
kernel.org / pub/linux/kernel/v2.6/ChangeLog-2.6.30.5
Broken Link
kernel.org / pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc6
Broken Link
mandriva.com / security/advisories
Broken Link
openwall.com / lists/oss-security/2009/08/13/1
Mailing ListPatchThird Party Advisory
securityfocus.com / bid/36037
Broken LinkThird Party AdvisoryVDB Entry