CVE-2006-5649

Unspecified vulnerability in the "alignment check exception handling" in Ubuntu 5.10, 6.06 LTS, and 6.10 for the PowerPC (PPC) allows local users to cause a denial of service (kernel panic) via unspecified vectors.

Published: 2006-12-13 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-5649 is rated Low Risk (30.5/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.32%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2006-5649

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.05% 0.32% +0.27%
2 2025-08-02 0.05% 0.05% +0.00%
3 2025-03-17 — 0.05% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-5649

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0
4.6 2.0 MEDIUM
AV:L/AC:L/Au:S/C:N/I:N/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.1 6.9 [email protected]

Weakness enumeration for CVE-2006-5649

OS Trackers for CVE-2006-5649

vendor priority summary link
alpine — CVE-2006-5649: no source package rows; 0 state rows across 0 repos (none); fixed 0, open 0. https://security.alpinelinux.org/vuln/CVE-2006-5649
redhat — — https://access.redhat.com/security/cve/CVE-2006-5649
ubuntu medium CVE-2006-5649 medium priority: Ubuntu including 2 source packages (linux-source-2.6.15, linux-source-2.6.17), 8 status rows across 4 suites (dapper, edgy, feisty, upstream): DNE 4, needs-triage 2, released 2. https://ubuntu.com/security/CVE-2006-5649

Vendor comments (NVD) for CVE-2006-5649

  • Red Hat (2007-06-10T00:00:00)

    Not vulnerable. This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 3, 4, or 5. Red Hat Enterprise Linux 2.1 did not ship for PowerPC architecture.

Affected software / configurations for CVE-2006-5649

Vendor Product Version Raw CPE
ubuntu ubuntu_linux 5.10 cpe:2.3:o:ubuntu:ubuntu_linux:5.10:*:*:*:*:*:*:*
ubuntu ubuntu_linux 6.06_lts cpe:2.3:o:ubuntu:ubuntu_linux:6.06_lts:*:*:*:*:*:*:*
ubuntu ubuntu_linux 6.10 cpe:2.3:o:ubuntu:ubuntu_linux:6.10:*:powerpc:*:*:*:*:*

References for CVE-2006-5649

cvelogic Threat Intelligence