Is CVE-2005-2456 in the CISA KEV catalog?

No. CVE-2005-2456 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2005-2456?

CVE-2005-2456 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2005-2456?

CVE-2005-2456 has an EPSS score of 0.38% (29th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2005-2456?

No published fix for CVE-2005-2456 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2005-2456

MEDIUM

5.5

CVSS v3

NVD

Description

Array index overflow in the xfrm_sk_policy_insert function in xfrm_user.c in Linux kernel 2.6 allows local users to cause a denial of service (oops or deadlock) and possibly execute arbitrary code via a p->dir value that is larger than XFRM_POLICY_OUT, which is used as an index in the sock->sk_policy array.

CWE-667

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.38%probability of exploitation in 30 days

29thpercentile

Low risk: more likely to be exploited than 29% of all known CVEs.

References

Patch3

Third-Party Advisory3

Mailing List2

Other references15

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.