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CVE-2005-2456

16
FAUCET Score

CVE-2005-2456 describes an array index overflow in the Linux kernel's xfrm_sk_policy_insert function (xfrm_user.c), affecting Linux kernel 2.6 and various Debian distributions. This vulnerability, rated Medium (CVSS 5.5), allows a local authenticated user to trigger a denial of service (kernel oops or deadlock) and potentially execute arbitrary code. 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
2.6.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.0:*:*:*:*:*:*:*
3.1CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:3.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 86th percentile among its peer group of 15,940 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: kernel-0:2.4.21-37.EL
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: kernel-0:2.6.9-22.EL
View patch

Vendor Advisories (1)

redhatCVE-2005-2456Important

security flaw

Jul 25, 2005

References

secunia.com / advisories/16298
Broken Link
secunia.com / advisories/16500
Broken Link
secunia.com / advisories/17002
Broken Link
secunia.com / advisories/17073
Broken Link
secunia.com / advisories/17826
Broken Link
secunia.com / advisories/18056
Broken Link
secunia.com / advisories/18059
Broken Link
exchange.xforce.ibmcloud.com / vulnerabilities/21710
Third Party AdvisoryVDB Entry
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10858
Broken Link
usn.ubuntu.com / 169-1
Broken Link
debian.org / security/2005/dsa-921
Mailing List
debian.org / security/2005/dsa-922
Mailing List
kernel.org / git
Broken Link
kernel.org / git
Broken Link
mail-archive.com / netdev%40vger.kernel.org/msg00520.html
Patch
mandriva.com / security/advisories
PatchThird Party Advisory
mandriva.com / security/advisories
PatchThird Party Advisory
novell.com / linux/security/advisories/2005_50_kernel.html
Broken Link
redhat.com / support/errata/RHSA-2005-514.html
Broken Link
redhat.com / support/errata/RHSA-2005-663.html
Broken Link
securityfocus.com / archive/1/427980/100/0/threaded
Broken LinkThird Party AdvisoryVDB Entry
securityfocus.com / bid/14477
Broken LinkThird Party AdvisoryVDB Entry
vupen.com / english/advisories/2005/1878
Broken Link