CVE-2005-2456: n/a vulnerability

CVE-2005-2456: Array index overflow in the xfrm_sk_policy_insert function in xfrm_user.c in Linux kernel 2.6 allows local...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 22:30 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2005-2456 is an old Linux kernel 2.6 flaw in IPsec/XFRM handling. A local user could crash or deadlock the system, and the CVE notes possible arbitrary code execution. It mainly matters for legacy systems still running unpatched 2005-era kernel packages. Exposure is most likely on legacy Linux systems running vulnerable 2.6 kernel builds covered by 2005 vendor advisories. The bundle does not provide exact affected package versions beyond the generic Linux kernel 2.6 description and advisory references. Medium priority for modern environments, higher for organizations with legacy Linux servers or shared-user systems. The business risk is mainly local denial of service and possible kernel-level compromise on unsupported hosts. Mitigation focus: Apply the relevant vendor kernel update for affected legacy distributions.; Prioritize decommissioning hosts still running unsupported Linux 2.6 kernels.; Restrict local shell access on legacy systems pending remediation..

Prepared: Jun 29, 2026, 18:40 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup

cve · low confidence lookup

CVE-2005-2456 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup

Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Aug 4, 2005, 04:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
USN-169-1CVE reference · vendor-advisory, x_refsource_UBUNTU
oval:org.mitre.oval:def:10858CVE reference · vdb-entry, signature
linux-kernel-xfrm-dos(21710)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.